Conservapedia - User contributions [en]

Talk:E=mc²

2012-04-06T07:17:19Z

SamCoulter: /* Some questions */

==I'm Finding This a Little Hard to Understand==
First off, E = mc2 describing a relationship between energy and matter is only one corollary. It is also part of a well known problem in chemistry... Or is isotopic mass not less than the sum of it's parts? The equation itself HAS been derived from the Theory of Relativity, and is a direct consequence of the energy momentum four vector for an object with 0-momentum. The quote you provide from the paper states that the theory is not enough for a rigorous PROOF, but it never tries to deny the derivability of the equation. Derivation and proof are two entirely different things.

==This Article Could Use Sources or Better Explanation==
Wow. Classic Andy. Unsourced statements supposedly contradicting well-established theories of physics. No real proof other than "the Bible says it's not true," even though this is an extremely uncommon interpretation Genesis. --[[User:AndreaM|AndreaM]] 01:06, 25 March 2012 (EDT)

:It's a start for now, and will expand over time. That's how wikis work.--[[User:Aschlafly|Andy Schlafly]] 01:18, 25 March 2012 (EDT)
::Doesn't it relate energy to mass? The speed of light is just a constant here. [[User:IanR|IanR]] 02:22, 25 March 2012 (EDT)

== Humbug ==

The phrase ''meaningless, almost nonsensical, statement '' (as used in the article) fits the first paragraph to a t.

Aschlafly, please try to refute the explanation of the experiments of John Cockroft and Ernest Walton, which is accepted generally under physicists. And try to give some sources - or if not, some of your own calculations!

If not, just erase the first section.

[[User:AugustO|AugustO]] 11:23, 25 March 2012 (EDT)

== Nobel Lecture ==

I took out the link to the Nobel lecture, it can be found in the short summary. But be aware that John Cockroft is using the dreaded formula with ease (but without stating so explicitly - why should he, it's already generally accepted!) An astute reader, who not only searches for the formula finds e.g., the formulation:

:'''This energy could be provided by a diminution of mass of 0.0184 mass units.'''

Indeed, these are the ≈ 17MeV!
[[User:AugustO|AugustO]] 11:51, 25 March 2012 (EDT)

==Irrelevant claims==
Are these claims of so called "experimental verification" valid or useful? If you look at enough so-called science you can find people claiming anything. --[[User:DavidEdwards|DavidEdwards]] 12:59, 25 March 2012 (EDT)
:''you can find people claiming anything'' Indeed - and that's why there is a difference between the unsubstantiated claims in the first section, and the actual experiments in the following paragraphs. If you have a good explanation of the outcome of these experiments (some math would be nice), feel free to add your personal ''claim''.
:[[User:AugustO|AugustO]] 13:03, 25 March 2012 (EDT)
::Why do you feel that I need to do that? I understand that you may wish to believe relativity is true, but that is no reason to impose your personal beliefs on others.--[[User:DavidEdwards|DavidEdwards]] 13:40, 25 March 2012 (EDT)
:::Thinking that all claims have the same validity seems not a very conservative position. I don't expect you to accept my personal beliefs, but there is a tendency in physics that the claims which are backed up by those willing to do the experiments and the maths have a greater following than random insights. [[User:AugustO|AugustO]] 13:47, 25 March 2012 (EDT)
::::I don't understand why your personal beliefs are even included in the article.--[[User:DavidEdwards|DavidEdwards]] 13:58, 25 March 2012 (EDT)
:::::*Because they are bolstered by experiments...
:::::*...and they aren't just my beliefs - in fact it will be very hard to find a physicist who doesn't share them. And that's something which shouldn't be easy to ignore in an article on a physical subject.
:::::[[User:AugustO|AugustO]] 14:02, 25 March 2012 (EDT)
::::::If science is your religion then you will find scientists who share your views. I still don't see why they should be hosted here. The introduction makes the Biblical position clear.--[[User:DavidEdwards|DavidEdwards]] 14:07, 25 March 2012 (EDT)
:::::::Religion is my religion, science is my hobby. And just because there is one single interpretation of a few verses of Genesis out there which you think to contradict the experiments of the physicists doesn't shatter my religious beliefs nor my trust in physics. [[User:AugustO|AugustO]] 14:35, 25 March 2012 (EDT)
::::::::Then why do you insist with this anti-religious pseudoscience?--[[User:DavidEdwards|DavidEdwards]] 14:41, 25 March 2012 (EDT)
← Now you have intrigued me: what's your definition of pseudoscience? [[User:AugustO|AugustO]] 14:45, 25 March 2012 (EDT)

Pssst! DavidEdwards! You're trying waaaaay too hard. --[[User:JoshuaB|JoshuaB]] 21:20, 25 March 2012 (EDT)
:Too hard about what?
:As far as the pseudoscience question is concerned - "science" which is used to promote a worldview which has no basis in moral reality is pseudoscience. Science which is designed to suggest that morality is relative clearly falls into this category.--[[User:DavidEdwards|DavidEdwards]] 18:40, 26 March 2012 (EDT)

==Question==
This snipet of sentence appears in the introduction: "...''a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory.''" Let's compare that to the entire sentence it was lifted from: "'''''Leaving aside that it continues to be affirmed experimentally,''' a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory.''" One can't help but notice that the part of the sentence that states that the theory has been observed to be valid in real world experimentation, has been surgically removed. Why is this? Is it because it stands in contradiction to the claim the lead author of this article is trying to promulgate? --[[User:JoshuaB|JoshuaB]] 20:55, 25 March 2012 (EDT)

:Peer-reviewed journals won't publish a criticism of relativity. That's obvious. Although I don't have a copy of the full paper, I doubt it attempts to fully support the [[hearsay]] that was excluded, and I would not be surprised if it was included simply to safeguard against complaints for what followed. It adds nothing to the basic point that follows and is quoted here.--[[User:Aschlafly|Andy Schlafly]] 21:19, 25 March 2012 (EDT)

::Why won't a peer-reviewed journal publish a criticism of SR or GR? Liberal conspiracy? Also, do you not accept that mass and energy are interchangeable or is it a problem with this specific equation? --[[User:JoshuaB|JoshuaB]] 21:24, 25 March 2012 (EDT)

:::JoshuaB, do you accept the possibility that the [[Theory of Relativity]] may be false, and would you approve a well-written paper that criticized it? It's a simple "yes" or "no" question.--[[User:Aschlafly|Andy Schlafly]] 21:55, 25 March 2012 (EDT)

::::Yes. We already know the Theory of Relativity is an incomplete model of our universe. So yes, the theory may be "false", but the one that takes it's place will most likely have many of the same properties. Secondly, would I approve of a "well-written paper that criticized it"? I don't know what that means. I'm not a physicist, so I don't see what difference my "approval" of said paper would make. Now that I've been so kind as to answer your questions, would you return the courtesy and answer the ones I posted above? --[[User:JoshuaB|JoshuaB]] 22:35, 25 March 2012 (EDT)

:::::The qualifications on your answer render it almost meaningless. I'm not asking whether your approval of a paper would make a difference, or your opinion about whether you think the replacement of the [[Theory of Relativity]] will "most likely" be another theory of relativity. The question was simple and straightforward, referring to a paper critical of the theory of relativity without any appeasement to those who insist on believing in it. An unqualified answer is requested.

:::::Also, did you ever answer my simple question on [[Talk:Main Page]] about how much time you've spent reading the [[Bible]] this month?--[[User:Aschlafly|Andy Schlafly]] 22:50, 25 March 2012 (EDT)

::::::Come off it Schlafly. This article is not about my Bible reading, is it? No. Does my opinion of the publishing criteria of physics academia have any bearing on the assertions you are trying make? No. Again: Do you not accept that mass and energy are interchangeable or is it a problem with this specific equation? --[[User:JoshuaB|JoshuaB]] 23:11, 25 March 2012 (EDT)

:::Andy, do you accept the possibility that the Theory of Relativity may be correct, and would you approve a well-written paper or book that supported it? It's a simple "yes" or "no" question. --[[User:FrederickT3|FrederickT3]] 03:28, 26 March 2012 (EDT)

== Some points ==

*''Misplaced claims of experimental verification'': if you want to put on the disclaimer ''misplaced'', please explain the results of the experiments in another way.
*''Why won't a peer-reviewed journal publish a criticism of SR or GR?'' But they do: remember the neutrino thing? Or the papers of H. Ives? In fact the first event has shown that especially the publication of experiments (seemingly) violating currently accepted theories gets attention!
*Taking only the second half of ''"Leaving aside that it continues to be affirmed experimentally, a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory."'' makes you looking deceptive. Take the whole sentence and try to explain the motivation of the first half. Otherwise anyone who looks the quote up will suspect an ulterior motive!
*The whole first section is a train wreck.
*''[[Mass]] is a measure of an object's inertia, and is directly related to the forces of [[gravity]].'' Only when you accept the general theory of relativity it is, otherwise inertial mass and gravitational mass are quite different animals.
[[User:AugustO|AugustO]] 02:46, 26 March 2012 (EDT)

::I have attempted to clarify the last point on the [[Mass]] page, and also removed the fact template from the first paragraph, since the explanation is given later on. As it stood, the "citation needed" banners following important points tended to undercut the authority of the article.--[[User:CPalmer|CPalmer]] 08:29, 26 March 2012 (EDT)
::The problem is not a confusion of weight and mass, but the conflation of gravitational and inertial mass. In the classical theory, there is no reason why both should be the same, it's just an experimental fact.
::So, I'm sorry, your new entry didn't help.
::[[User:AugustO|AugustO]] 08:40, 26 March 2012 (EDT)

:::But they always are the same, aren't they? I don't see why knowing or not knowing the reason (yet) has any bearing on the question.--[[User:CPalmer|CPalmer]] 08:43, 26 March 2012 (EDT)

::::Aschlafly writes: ''Mass is a measure of an object's inertia, and is directly related to the forces of gravity. In contrast, the intrinsic energy of an object (such as an atom) is a function of electrostatic charge and other non-inertial forces, having nothing to do with gravity.''
::::E=mc² isn't about gravity, to invoke it here is a deflection. [[User:AugustO|AugustO]] 08:49, 26 March 2012 (EDT)

::::: OK. But bear in mind that this page clearly exists to provide a counterweight to certain liberal views. To do that, clarity of message is needed, and a "citation needed" banner has a deflating effect on the strength of that clarity. So perhaps you could suggest a wording that might be acceptable without the "citation needed" bit?--[[User:CPalmer|CPalmer]] 09:03, 26 March 2012 (EDT)

No, I can't. Frankly, I don't see the clarity in this piece: at the moment, it is still sadly missing. So I hope, that Aschlafly taking care of the fact-tags (other then trimming them away) will add to this clarity! [[User:AugustO|AugustO]] 09:13, 26 March 2012 (EDT)

== Examples of how meaningless E=mc² is: descriptions for the layman ==

Try to explain a complicated formula in 1-2min, then have a single sentence of this soundbit taken out. You can bet that this may sound meaningless. That's no fault of the formula. I'll change the title back. [[User:AugustO|AugustO]] 09:58, 26 March 2012 (EDT)

:The quotes (and others that could be added) illustrate how meaningless the formula is.--[[User:Aschlafly|Andy Schlafly]] 10:02, 26 March 2012 (EDT)
::The quotes illustrate how difficult it is to explain the concept to a layman. Take a look [http://www.pbs.org/wgbh/nova/einstein/expe-text.html here], where you can find the quotes in context. [[User:AugustO|AugustO]] 10:16, 26 March 2012 (EDT)

:::The quotes were solicited to describe the meaning of the equation to laymen, not to illustrate how difficult that is. The difficulty arises from the meaningless nature of the equation.--[[User:Aschlafly|Andy Schlafly]] 11:01, 26 March 2012 (EDT)
::::Actually the meaning of the equation is very clear: the total energy contained in matter is its mass multiplied by the speed of light in a vaccum squared. Experiment after experiment, and nuclear reactor after nuclear reactor, has clearly demonstrated that the total energy released by a reaction is the lost mass multiplied by c2. Therefore whether the theories of relativity are true or not, E=mc2 is true. Equally, even if classical Newtonian mechanics was false, the kinetic energy of a moving mass would still be accurately described by Ek=1/2mv2. --[[User:SamCoulter|SamCoulter]] 16:34, 28 March 2012 (EDT)
::::Indeed. Internet quotes are really not very useful. A skilled researcher can always find someone saying something to justify their position however bizarre or immoral. This is a typical weakness (and response!) of those who have no real moral or religious basis for their convictions. --[[User:DavidEdwards|DavidEdwards]] 19:04, 26 March 2012 (EDT)
::::These quotes are absolutely meaningless. It looks like you took random sentences from the PBS article and then inserted them into the article as if they had any real significance. This is made even more moot when you consider the fact that the article claims that "Ten top physicists were asked to describe in laymen's terms E=mc²" and then you go on to quote three. Not to mention, most of the quotes aren't actually explaining what the equation means - a basic understanding of algebra and what the symbols mean is sufficient to understand its basic meaning - but rather what it entails, its implications. Tim Halpin-Healy's quote I think is better than taking some random sentences and then implying that they mean that physicists don't know what E=mc² means. --[[User:Tyg13|Tyg13]] 15:58, 1 April 2012 (EDT)

:::::The problem is that '''E=m2does not meaning anythimg that makes sense. Anyone is welcome to try to explain it here. Eating a pound of cake does not cause one's energy to increase by the speed of light squared.--[[User:Aschlafly|Andy Schlafly]] 16:06, 1 April 2012 (EDT)
::::::No, it doesn't. It causes your energy to increase by a number of foot-pounds equal to '''one pound''' times the speed of light squared. I've explained this to you already and it isn't difficult. --[[User:SamCoulter|SamCoulter]] 16:23, 1 April 2012 (EDT)
:::::::The equation is essentially just a conversion ratio, its not difficult to understand that units of energy (Whether it is Joules, pound-foot, or erg) look essentially like a velocity squared times a mass (in SI units - kg m^2/s^2) this is not relativity or theory dependent, its the definition of Energy. The Special Relativistic analysis that results in the basic equation just determines that the conversion ratio is precisely that universal constant '''c''' in whatever units are convenient. There is no blindingly obvious or intuitive reason why this SHOULD be the case (conceivably the conversion ratio could have any number of complicated dimensionless constants in front), but basic mathematical logic allows us to derive this simple relationship from the postulates of Special Relativity. That being said, its a rather useless equation on everyday scales. In reality, after consuming a pound of cake your body begins to break down the chemical bonds in the sugars/fats/proteins to extract usable energy, about 1500 food calories worth of it. If you had a precise enough scale and could somehow keep a human in a hermetically sealed bag that prevents the escape of any moisture/gas etc. you would be able to measure that after consuming and digesting the cake your bodyweight would not be +1 lb, but about 70 pg (picograms - 10^-12 grams) less, so if you weighed 150.0lb and ate a pound of cake (total of 151lb), after digestion you would actually weigh 70pg less than 151lb. It is important to note that this "mass" isn't "lost" it is merely the "weight" of the energy stored in the chemical bonds, in other words in a pound of cake there is (1lb - 70pg) of stuff and 70pg worth of "chemical energy" with a conversion ratio of c^2. If you had some magic machine that could convert mass to energy at 100% efficiency the detonation of a body sized bomb would release 20 times more energy than the largest nuclear weapon detonated by man kind, however due to the nature of nuclear transitions/processes such a 100% conversion rate is not possibe . On the scale of nuclear bonds (order of MeV) this difference becomes conceivably measurable, but even so, in the detonation of a hiroshima sized nuclear weapon, the loss of mass due to the nuclear fission is approximately 500mg, the rest of the nuclear material is dispersed as fallout, considering that there was ~60kg of nuclear material in the weapon, this corresponds to an energy "efficiency" ~1%, which is typical of fission devices. In a 100MT nuclear bomb this is conceivably larger at nearly 5kg, and the fusion type weapon that can achieve this high yields has considerably higher mass-energy conversion efficiency at around ~20% [[User:DenisTR|DenisTR]] 16:53, 5 April 2012 (EDT)
:::::::: Another way of thinking about is this. Consider your typical AA batery, it is not a difficult stretch of the mind to understand that this battery stores electrical energy, approximately 2Ampere-hours at 1.5v which is approximately 5000J worth of STORED electical energy. Now, CONSUMING this battery does not cause your kinetic energy to increase by 5000J the same way that consuming a pound of cake does not cause your kinetic energy to increase by 1lb*c^2, you are still limited by your ability to convert between different energy sources. So A RC car would be able to use that battery to move around for several hours, YOU on the other hand will most likely just pass the battery through your body and the basic chemicals that are storing this electric energy will come out unaltered. The same way that a pound of cake can sustain you for a day, but try stuffing it into the battery compartment of your RC car and it won't move an inch. "Mass-energy" works much the same way, sure consuming a pound of cake increases your "rest energy" or by an enormous amount, but in reality there is no way to convert mass directly to energy so its much the same as swallowing a battery or stuffing cake into the RC car. [[User:DenisTR|DenisTR]] 17:05, 5 April 2012 (EDT)
:At any rate, eating a pound of cake, is not nuclear physics, it is chemistry, where your cells digest and utilize the sugars within. Protiens are also converted into sugar.[[User:JonM|JonM]] 18:28, 1 April 2012 (EDT)

== Aschlafly, could you give us... ==

... your interpretation of the results of the experiment by Cockroft and Walton? Cockroft describes in his Nobel Lecture how the kinetic energy of the alpha-particles could be provided by ''diminution of mass of 0.0184 mass
units.'' (p. 170). Please take into account that this isn't about energy in form of electromagnetic waves!

If you don't address the results of the actual experiments, all your claims are just meaningless verbiage.
[[User:AugustO|AugustO]] 10:39, 26 March 2012 (EDT)

:Cockcroft (please spell his name correctly) does not even cite E=mc2 in his Nobel lecture.--[[User:Aschlafly|Andy Schlafly]] 11:01, 26 March 2012 (EDT)
::You don't think that it is ''implied'' by the quote that AugustO provided? --[[User:FrederickT3|FrederickT3]] 11:10, 26 March 2012 (EDT)

:::No, I don't. E=mc2 is supposedly a general truth of universal applicability. The case for it, if true, needs to be far stronger than what is quoted above.--[[User:Aschlafly|Andy Schlafly]] 11:15, 26 March 2012 (EDT)

From the lecture: ''It was obvious then that lithium was being disintegrated into two α-particles with a total energy release of 17.2 million volts. This energy could be provided by a diminution of mass of 0.0184 mass
units.''

Aschlafly, your ignorance is showing:
17.2 MeV /c² = 1.602*10-19kg m²/s² *17.2 *109/(3*108 m/s)² = 3.0616 * 10-29kg = 0.0184 amu

In fact as this is such a ''general truth of universal applicability'', J. Cockroft could take it for granted that his scientifically literate audience would be able to make this calculation.
[[User:AugustO|AugustO]] 11:26, 26 March 2012 (EDT)

:::One question, though: We have four protons and four neutrons on the left hand side of the equation, and four protons and four neutrons on the right hand side. So why the difference in mass?
:::Also, forgive my ignorance, but why is the 'energy' measured in volts? Volts are not a measure of energy.--[[User:CPalmer|CPalmer]] 11:40, 26 March 2012 (EDT)

*Bainbridge measured the mass of 7Li directly, using mass spectrometry.
*Indeed, three protons and four neutrons weight less than a 7Li - kernel
*Energy is measured in this cases in [[Electron-Volts]]. One electron volt is the energy of an electron which passed through a potential of 1 Volt.
[[User:AugustO|AugustO]] 11:54, 26 March 2012 (EDT)
:AugustO, please contribute something substantive instead of talking up a storm. Thanks.--[[User:JamesWilson|James Wilson]] 11:56, 26 March 2012 (EDT)
:::James Wilson, please don't interfere in interesting and substantive discussions. Thank you! [[User:Baobab|Baobab]] 12:12, 26 March 2012 (EDT)
::::"Baobab", please state what substance is coming out of this conversation. You have had a history of engaging in hefty talk. Please start contributing. I have had some great insights contributing in a few articles today and will continue to do so. Many thanks for your future contributions.--[[User:JamesWilson|James Wilson]] 12:47, 26 March 2012 (EDT)
:::::"James Wilson", AugustO is clarifying things and giving us some great insights, as CPalmer's latest reply shows. Discussions will often lead to better articles, which is why your interference was totally uncalled for. I guess your only motive was to defend Mr. Schlafly, but he can take care of himself and really doesn't need your help. Regards, [[User:Baobab|Baobab]] 13:30, 26 March 2012 (EDT)
::Thanks, AugustO. Relativity or no relativity, I am learning a lot from this discussion.--[[User:CPalmer|CPalmer]] 12:00, 26 March 2012 (EDT)
:::You are posing excellent questions! Indeed it should be of interest for Aschlafly, too:
:::'''Aschlafly, two protons (1.0073amu) and two neutrons (1.0087amu) have a combined mass of 4.0320 amu. An alpha-particle - existing from two protons and two neutrons - has a mass of 4.0015 amu. How do you explain this diminution of mass?
:::[[User:AugustO|AugustO]] 13:42, 26 March 2012 (EDT)
::::What real evidence do you have that these particles even exist? No doubt you've read it in a book or some "qualified person" has said it is true. In reality you accept these things on the word of somebody else - in other words your belief in the existence of these particles is a matter of scientific faith in something which you have no personal knowledge. There is obviously no problem with believing things on faith, but please don't pretend it's "true because science says it's true". Christians get their real truth from a higher authority.--[[User:DavidEdwards|DavidEdwards]] 18:49, 26 March 2012 (EDT)
:::::I find Mr O's position to be rather odd. He insists that Mr Schlafly - and only Mr Schlafly answers his questions. Yet at the same time Mr O steadfastly ignores comments specifically directed at him.--[[User:DavidEdwards|DavidEdwards]] 16:11, 28 March 2012 (EDT)
::::::If you're referring to your question about how he knows that protons and neutrons really exist, I suspect he thought it wasn't worth answering. I tend to agree. --[[User:SamCoulter|SamCoulter]] 16:15, 28 March 2012 (EDT)

@DavidEdwards: Sorry, [[User:DavidEdwards|DavidEdwards]], I didn't want to ignore you. I hadn't caught up after the databank mishap, I'm afraid.
So, to answer your questions: At school, we performed a couple experiments -there were teltron tubes, the Millikan the photo-electric effect, the Millikan Oil Drop experiment, de Broglie's electron diffraction experiments, etc. These experiments confirmed my persuasion that the electrons, protons and neutrons are physically real entities. The proposed theories explained these effects - and sitting in front of a computer, I'm surprised that you aren't willing to accept the theories behind semi-conductors. [[User:AugustO|AugustO]] 16:25, 28 March 2012 (EDT)
@SamCoulter: There is some truth in your statement, too: it's like asking a priest: ''let's talk about your religion without mentioning Jesus''... [[User:AugustO|AugustO]] 16:28, 28 March 2012 (EDT)

== Restoration ==

I could restore this page to the last version which I had edited. I don't know whether there were more entries. This should help to restore the article: perhaps one positive effect could be that Aschlafly marvels about the questions in the previous section for a while and rethinks his position! [[User:AugustO|AugustO]] 18:36, 26 March 2012 (EDT)

== Instead of the source - tag ==

*''E=mc² is a meaningless, almost nonsensical, statement in physics that purports to relate all matter to light.''
It relates matter to energy, the square of the speed of light is just the conversation factor
*''In fact, no theory has successfully unified the laws governing mass (i.e., gravity) with the laws governing light (i.e., electromagnetism).''
It isn't about gravitational mass, but about inertial mass. To identify both means to invoke the General Theory of Relativity
* ''Simply put, E=mc² is liberal claptrap. ''
How so? It works!
* ''Biblical Scientific Foreknowledge predicts that a unified theory of all the laws of physics is impossible, because light and matter were created at different times, in different ways, as described in the Book of Genesis.''
So, physicists should just give up looking for it? I dare to say that there are many Christian physicists - they may just not follow your special interpretation of Genesis!
[[User:AugustO|AugustO]] 09:29, 27 March 2012 (EDT)

== A few questions for Aschlafly regarding the experiment of Cockroft and Walton ==

I'd appreciate an answer by Aschlafly (and him alone) to the following questions:

'''1.''' Do you accept that the mass of the Lithium-kernel (7Li), of alpha-particles (4He) and of protons (1H) can be measured fairly accurately, as these are charged particles?

'''2.''' Do you accept the measurements for the mass of the particles as used by Cockroft and Walton, i.e.
:::{|
!particle
!mass
|-
|1H||1.0072 amu
|-
|4He||4.0011 amu
|-
|7Li||7.0130 amu
|}
If not, which values do you think to be right?

'''3.''' Do you agree that before the reaction the mass of the particles involved was 8.0202 amu?

'''4.''' Do you agree that after the reaction the mass of the particles involved is 8.00220 amu?

'''5.''' Do you agree that there is a mass decrease of 0.0180 amu?

'''6.''' Before the experiment, the Li was at rest and the proton had a kinetic energy of less than 1MeV. Do you accept these values?

'''7.''' After the experiment, a pair of alpha-particles was observed, both having an kinetic energy of 8.6MeV. Do you think that this value is correct?

'''8.''' Can you tell me where the mass went? Can you tell me where the energy came from?

'''9.''' If your answer to question 8. is ''no'' in both accounts, than my answer is that there is a theory which explains the conversion of mass to energy, even if you don't like it!

As this theory works for this experiment, and for all the other fissions and fusions, it isn't liberal claptrap, but a meaningful theory. And you can't blame physicists for using it! Of course, you can blame journalist to abuse the formula - but this isn't the result of ''liberal physics'', but of ''bad reporting'', as an abuse of the dictum ''1+1=2'' doesn't reflect badly on number-theorists, but only on the person misattributing it.

Thanks, [[User:AugustO|AugustO]] 08:04, 28 March 2012 (EDT)

:AugustO, chemical reactions can release energy, typically based not on the size of their mass but on the electrostatic energy prior to the reaction. Cockcroft's own paper accepting the Nobel Prize does not claim that his work proved that '''''E=mc2'''''. Undoubtedly many other experiments contradict the formula, or else we'd have seen far more claims of experimental verification of it.--[[User:Aschlafly|Andy Schlafly]] 11:20, 31 March 2012 (EDT)

Aschlafly, you haven't answered any of the questions above! Instead you are talking about something completely different:
*We are not talking about a ''chemical'' reaction! You should know the difference.
*Cockroft claims that the energy comes from the loss of mass - and he calculates it according to ''E=mc²''. Please read (and understand!) his lecture.
*Please give a list of a few (or at least a single) experiment which contradicts the formula. This should be easy, as you stated that ''Undoubtedly many other experiments contradict the formula''. Oh, wait, you made that up...
*Please answer the questions 1 to 9: all the question are covered in Cockroft's lecture, so I'd be interested in your explanation!
[[User:AugustO|AugustO]] 11:32, 31 March 2012 (EDT)
:AugustO, if you cannot even spell Cockcroft's name properly, how can Andy take anything you say seriously? --[[User:AndreaM|AndreaM]] 22:03, 31 March 2012 (EDT)

== Move ==

Could you please move this article to [[Essay:E=mc²]]? Then I could ignore all the misleading and outright wrong statements in the first section! Thanks, [[User:AugustO|AugustO]] 15:57, 28 March 2012 (EDT)

== Experimental Facts ==

Aschlafly, on the one hand side, you state that ''no experiment distinguishes between "gravitational" and "inertial" mass'' - and that seems good enough for you. On the other hand side, you have a problem with the statement that E=mc² ''continues to be affirmed experimentally''. Do you spot the inconsistency? Indeed, I could write: ''the equivalence between inertial mass and gravitational mass has never been mathematically derived from first principles in classical mechanics, indeed, a rigorous proof of this equivalence is probably beyond the purview of classical theory.''

BTW, omitting the first part of the sentence ''"Leaving aside that it continues to be affirmed experimentally..."'' makes you look very disingenuous (even if you have good motives) to anyone who looks up the link to the abstract!

[[User:AugustO|AugustO]] 16:07, 28 March 2012 (EDT)

:It's hair-splitting jargon of doubtful significance. 99% of people know what mass is, and it's directly related to weight, not electrostatic energy.--[[User:Aschlafly|Andy Schlafly]] 16:38, 28 March 2012 (EDT)
::And the remaining percent are the physicists which draw such distinctions with good reason! [[User:AugustO|AugustO]]
:::Even more confusing is that the article states mass is a measure of inertia. Inertia is resistance to acceleration, and that has nothing to do with gravity at all. The article as it stands is simply inaccurate. --[[User:SamCoulter|SamCoulter]] 16:51, 28 March 2012 (EDT)

::::Aschlafly: ''....may not even have any justification in the paper''
::::Aschlafly, havn't you read the paper? Here is a part of the conclusion:
:::::''Einstein produced about 18 virtuoso derivations and demonstrations all aimed at establishing the mass-energy principle. We have shown that although each of them gave evidence for the applicability of E0 = mc² to a particular set of circumstances, no one derivation, or collection of them taken together, succeeded in providing a definitive proof of its complete generality. That should not be surprising because the same situation occurs, for example, with F = ma, which is a different kind of relation than E0 = mc². Even so, 300 years of successful theoretical work have not proven the correctness of F = ma. Indeed, relativity showed that this expression, one of the bedrocks of classical mechanics, holds only approximately.
::::Here is another excerpt, on mass, electromagnetism etc:
:::::''In the 19th century, a number of European physicists, including the leading theoretician of the time, Hendrik Lorentz, were working to establish that mass was, in whole or in part, electromagnetic. There were primarily two competing theories, one by Lorentz, the other by Max Abraham. Both agreed that depending on the relative direction of its velocity and acceleration, an “electron” a generic charged particle moving through the aether could manifest both transverse and longitudinal speed-dependent mass components. There was even experimental evidence that seemed to confirm as much. Electromagnetic theory was then at the center of physics.''
::::[[User:AugustO|AugustO]] 16:56, 28 March 2012 (EDT)

::::(May I add that I think one shouldn't make such fundamental statements as ''E=mc² has no meaning'', if one only skims a few abstracts! [[User:AugustO|AugustO]])

Aschlafly, maybe you have not the time (or the access) to read the actual papers - as you should when drawing conclusions. But perhaps you can take a look at [http://www.lbl.gov/abc/Basic.html Lawrence Berkeley National Laboratory's ABC of Nuclear Science] to refresh the basics?Even there, they use ''Einstein's famous equation...''... [[User:AugustO|AugustO]] 08:44, 29 March 2012 (EDT)

== ...purports to relate all matter to light ==

When I write that for iron I get:
::V [cm³] * 7.874 g/cm³ = M [g]
I don't relate the mass to 7.8474, but to the volume. So, similarly Einstein's equations says that mass is proportional to energy, not light. [[User:AugustO|AugustO]] 10:38, 29 March 2012 (EDT)
:But the constant applied in this case is the (square of the) speed of light! Are you saying that that is a coincidence? If so, why not just say "E=mc"?--[[User:CPalmer|CPalmer]] 10:57, 29 March 2012 (EDT)
::no, of course not, but we could write, e.g., Eε0 = m/μ0: the relationship is given between mass and energy... [[User:AugustO|AugustO]] 11:04, 29 March 2012 (EDT)
:::But the relationship itself is somehow connected to light. Or maybe, the relationship is connected with some third factor that also determines the speed of light.--[[User:CPalmer|CPalmer]] 11:58, 29 March 2012 (EDT)
::::yes, but the c² is a constant. Does the equation E/c²=m relate all energy to light? [[User:AugustO|AugustO]] 12:18, 29 March 2012 (EDT)
:::::Yes - the equation in any form relates mass, energy, and the speed of light. I think the article doesn't emphasise the light-energy relationship because it's the mass-energy relationship that appears absurd once the theory of relativity is discounted.--[[User:CPalmer|CPalmer]] 12:22, 29 March 2012 (EDT)

Even if you discount the theory of relativity, the experimental facts remain: in experiments where mass is deleted or created, this happens with the release or absorption of energy. And this energy is given by ≈8.99*1016m²/s² times the mass... [[User:AugustO|AugustO]] 13:31, 29 March 2012 (EDT)

== Misleading footnote ==

::(Your footnote about the units is bogus. SI units are not arbitrary, since eg Joules can be derived from other SI units including kilograms, metres and seconds. Therefore, the relationship to light ''is'' (purported to be) a natural one.)--[[User:CPalmer|CPalmer]] 11:00, 29 March 2012 (EDT)

Which footnote about units? [[User:AugustO|AugustO]] 11:04, 29 March 2012 (EDT)

Ah, I see, no, not ''my'' footnote. The text was inserted by [[User:GregG/RSS_6#Mon.2C_26_Mar_2012_18:05:11_GMT_.28edit_by_MihailD.29_2|MihailD]], and obviously the equation holds in other systems, too. [[User:AugustO|AugustO]] 11:10, 29 March 2012 (EDT)

I took out the main part of the footnote: it should be obvious that in a physical equation only compatible physical units can be used, and that otherwise conversion factors have to be introduced. But there is no problem, if we have c in feet/h, m in pounds, and E in pound*feet²/h²
[[User:AugustO|AugustO]] 11:30, 29 March 2012 (EDT)

:I see - my apologies. I thought you had added the footnote in order to try and make the point above. I agree that in any sensible unit system the equation will work (assuming the theory is right of course).--[[User:CPalmer|CPalmer]] 11:32, 29 March 2012 (EDT)

:Looks like [[User:MihailD|MihailD]] received a lifetime block for this and related edits, so he'll be unable to explain or justify his comments. --[[User:JasperK|JasperK]] 08:58, 30 March 2012 (EDT)

::That's a pity! [[User:AugustO|AugustO]] 09:38, 30 March 2012 (EDT)

== We will, we will, we will ==

Generally I enjoy the great contribution of SamHB. My only rub: the ''royal we'' - ''we will dispel'', ''we will show'', ''we don't do''. I don't think that this is the best way to phrase an encyclopedic article, and I'd like to see alternatives. For the moments, I just commented out some of the occurrences which in my opinion spoiled the fun of reading the article....

[[User:AugustO|AugustO]] 09:38, 30 March 2012 (EDT)

:It is a bit chatty. The first one could be rephrased "This article sets out to...". I have reworded two of the others, and the rest might possibly be omitted entirely.--[[User:CPalmer|CPalmer]] 09:44, 30 March 2012 (EDT)

== I don't understand... ==

Why you guys destroyed a wonderful original piece of work by Mr. Schlafly. There are hundreds of books and web sites that explain relativity, why did you feel the need to reproduce that content here? --[[User:AlejandroH|AlejandroH]] 16:18, 30 March 2012 (EDT)
:Perhaps because they are right and he is wrong? [[User:AugustO|AugustO]] 16:39, 30 March 2012 (EDT)

::Aschlafly, you still haven't answered my [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|reasonable questions abouts this subject]]. To be ignorant on a subject isn't that big a deal, but to willfully stay ignorant while lecturing about it, that is! [[User:AugustO|AugustO]] 17:32, 30 March 2012 (EDT)

BTW, the ''wonderful original piece of work'' was not destroyed - you find it embedded in the text. A blanket reversion of the work of a couple of editors should be a no-no, please give reasons for reverting at least for each paragraph! And answer the [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|questions!]] [[User:AugustO|AugustO]] 17:42, 30 March 2012 (EDT)

== Protection of the Article ==

Stated reason: ''(with reluctance, and repeated reversions; for now, post specific suggestions for edits on the talk page)''

Aschlafly, this must be one of these definitions of irony, as I asked for specific reasons for your deletions of material. Isn't that censorship? BTW, you still haven't replied to the [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|sections above]], and frankly I'm starting to call your knowledge on this matter in question! Ignorance is not always bliss!

And if you are not willing to address the points made above by various contributors, are you at least willing to read and answer to ''specific suggestions for edits on the talk page''? Or is this a sham to force-feed your view to the readers?

[[User:AugustO|AugustO]] 18:39, 30 March 2012 (EDT)

:The lead focus of the entry was converted into a parade of [[hearsay]] rather than logical analysis. Simply put, the entry had denigrated into the ''antithesis'' of the truth-seeking integrity expected of ''Conservapedia''.--[[User:Aschlafly|Andy Schlafly]] 19:41, 30 March 2012 (EDT)
::And what about the current entry? The fact is that E=mc2 is a perfectly valid equation demonstrating the equivalence of matter and energy and it has been thoroughly verified; the energy a piece of matter contains DOES equal its mass times ''c'' squared. This has been repeatedly demonstrated by experiments, which consistently show that the energy released by a reaction is equal within measuring limits to the overall mass lost. It's perfectly reasonable to reject any claim that this demonstrates the truth of moral relativism, atheism or anything else, but to criticise the equation itself as "meaningless" or "liberal claptrap" demonstrates no truth-seeking or integrity. E=mc2 is no more liberal than d=vt or 1+1=2. --[[User:SamCoulter|SamCoulter]] 19:53, 30 March 2012 (EDT)

:::The entry explains how nonsensical the formula is as a general principle -- and how it has never been derived as a matter of logic or demonstrated in any general, meaningful manner. Reliance on [[hearsay]] is not a serious alternative.--[[User:Aschlafly|Andy Schlafly]] 20:24, 30 March 2012 (EDT)

::::But it ''isn't'' a general principle. It's a mathematical expression of matter-energy equivalence and it's perfectly valid. Whether or not it's ever been derived as a matter of logic or not is irrelevant because it's been repeatedly demonstrated to be true in the most meaningful manner possible: if you turn matter into energy the amount of energy that comes out is always equal to the lost mass times ''c'' squared. --[[User:SamCoulter|SamCoulter]] 20:59, 30 March 2012 (EDT)

:::::You restate the claim as though its repetition would make it true. It doesn't. If someone gains one pound in weight, then it is preposterous for anyone to claim that his energy has thereby increased in proportion to the speed of light squared.--[[User:Aschlafly|Andy Schlafly]] 21:07, 30 March 2012 (EDT)

::::::Yes, it would be absolutely preposterous. In fact his energy would have increased by a number of foot-pounds equal to one pound times ''c''2 in feet per second. --[[User:SamCoulter|SamCoulter]] 21:11, 30 March 2012 (EDT)
:::::::To explain that further, his energy would have increased in proportion to his '''weight''', not to the speed of light. If a person who weighed 150lb gained 1lb the energy contained in their mass would increase from 1.4467x1017 ft lb to 1.4564x1017 ft lb. --[[User:SamCoulter|SamCoulter]] 21:39, 30 March 2012 (EDT)

::::::::The formula '''E=mc2''' does assert that his energy for a fixed gain in weight would increase in proportion to the speed of light squared and, as you say, that is preposterous.--[[User:Aschlafly|Andy Schlafly]] 23:37, 30 March 2012 (EDT)

:::::::::No, his energy for a fixed gain in weight will increase in proportion to his '''weight'''. In my example of a 150lb man gaining 1lb, his new energy content will be 0.6667% higher, '''as will his weight'''. ''c''2 is just a constant. --[[User:SamCoulter|SamCoulter]] 00:52, 31 March 2012 (EDT)
::::::::::Andy seems to imagine that this energy should be immediately available for sports or doing work around the house, and that we should all be superheroes after having eaten a bar of chocolate. This is, of course, not so. The energy is still locked up in the mass, and it would require nuclear or particle reactions to convert even small parts of it into useful forms of energy. --[[User:FrederickT3|FrederickT3]] 03:28, 31 March 2012 (EDT)
''The lead focus of the entry was converted into a parade of [[hearsay]] rather than logical analysis''. Then let's get factual: just answer a [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|few questions]]. Shouldn't be difficult, as you are so insightful. [[User:AugustO|AugustO]] 01:26, 31 March 2012 (EDT)

Of course this is hearsay - and so it should be. Conservapedia is an encyclopedia - a collection of established information cited from other sources. Hearsay may be inappropriate in court, but it is the lifeblood of an encyclopedia. Anything that is not 'hearsay' is personal opinion or original research, and should be reserved for articles prefixed 'Essay:'. --[[User:JasperK|JasperK]] 08:23, 1 April 2012 (EDT)

:Then again, heresy tends to be more reputable when it comes from a professional who has studied the issue for years, instead of a man who doesn't understand how food works. [[User:JackFerner|JackFerner]] 12:23, 2 April 2012 (EDT)

== Bare links ==

I noticed that [http://conservapedia.com/index.php?title=E%3Dmc%C2%B2&diff=971455&oldid=971446 this edit] removed publication information about the references. Personally, I think this information is useful for two reasons: it helps Conservapedia editors locate the references from other sources if (and when) the links go dead, and it helps who print out Conservapedia articles and wish to look up the references offline. (Of course, I'm not suggesting that the URLs be removed, but this could be in addition to the publication information). Of course, there may be perfectly good reasons for removing the publication information of which I am not aware, but I otherwise think that the publication information should be included again (and I plan to do this once the protection expires). [[User:GregG|GregG]] 23:17, 30 March 2012 (EDT)

:Great point. I retrieved and added many of the citations back. If I missed any then I'd be happy to add them also.--[[User:Aschlafly|Andy Schlafly]] 23:37, 30 March 2012 (EDT)

== Niels Bohr ==
Andy, for how often you rail against the Nobel Prize I'm surprised that you would try and use a former winner as an authority to support your misguided assertion. [[User:DennisR|DennisR]] 21:48, 1 April 2012 (EDT)

:Even a broken clock (like the Nobel Prize) gets it right every once in a while!--[[User:Aschlafly|Andy Schlafly]] 22:07, 1 April 2012 (EDT)

::''. As a general claim of equivalence between mass, energy and the speed of light, it was widely rejected at the time by the leading 20th century physicists, including Niels Bohr. '' Who were these physicists? And what said Niels Bohr? I couldn't find anything. In the famous ''Gedankenexperiment'' at Solvay, he accepted ''E=mc²! [[User:AugustO|AugustO]] 02:14, 2 April 2012 (EDT)

:::And of course it ''isn't'' a "general claim of equivalence between mass, energy and the speed of light." It's a statement of equivalence between energy and matter. Andy seems to be obsessed with the idea that light is involved somehow, and that conflicts with his rather odd idea that the Bible forbids a unified theory. I can only wonder what he'll do if science comes up with a unified theory. Probably deny that too. --[[User:SamCoulter|SamCoulter]] 02:16, 2 April 2012 (EDT)

Aschlafly, according to the information I found (Einstein and Bohr at the Solvay-conference), Niels Bohr accepted ''E=mc²''. So, a fact-tag was the only alternative to downright deleting the sentence: it allows you to bring up your sources! [[User:AugustO|AugustO]] 02:31, 2 April 2012 (EDT)
:I'd have been amazed if he hadn't. Bohr was on the British team for the Manhattan Project, and he wouldn't have been much use at nuclear weapon design if he didn't accept E=mc2. --[[User:SamCoulter|SamCoulter]] 02:41, 2 April 2012 (EDT)

::Aschlafly, you have a tendency to make up claims (''As a general claim of equivalence between mass, energy and the speed of light, it was widely rejected at the time by the leading 20th century physicists, including Niels Bohr. '', ''Undoubtedly many other experiments contradict the formula'', and, yes, '' "suddenly" or "at that time" is a nuance of the Greek ἰδού''). And when your bluff is called, you are miffed! [[User:AugustO|AugustO]] 03:00, 2 April 2012 (EDT)
::''Protected "E=mc²": insertion of a fact tag instead of finding and adding a reference.'' That is ridiculous: there is no way of ''finding and adding a reference'' for this made-up "''fact''"!
::It is, however, not very difficult to show that the ''fact'' was invented: just take a look into ''"Foundations of Quantum Physics I''", a book written by Niels Bohr and Jorgen Kalckar. Here Bohr uses what he calls ''Einstein's relation'' without any trepidation! [[User:AugustO|AugustO]] 09:00, 2 April 2012 (EDT)
:::Presumably, then, the relevant text should be changed to something like "it was widely rejected at the time by the leading 20th century physicists, although Niels Bohr later accepted it." and then add the citation. Or you could clarify with something like "the liberal Nobel Prizewinner Niels Bohr".--[[User:CPalmer|CPalmer]] 09:18, 2 April 2012 (EDT)
::::*There is no reason to think that there was a time at which Niels Bohr didn't accept it!
::::*Is there any source which shows that it was ''widely rejected at the time''? Of course, there was the [[Deutsche Physik]], but does this count?
::::*That said: the <nowiki>{{fact}}</nowiki> tag was absolutely appropriate.
::::[[User:AugustO|AugustO]] 09:44, 2 April 2012 (EDT)

:::::You make some valid points as the online evidence is remarkably scant, even though the disagreement between Bohr and Einstein is well-known. This may be a (rare) example where the internet is less adequate than books. I did add an explanatory footnote and the protection to the page should be expiring soon, if not already.--[[User:Aschlafly|Andy Schlafly]] 10:22, 2 April 2012 (EDT)

*Einstein disagreed with Bohr regarding quantum mechanics. Could you provide a source that Bohr disagreed with Einstein on the theory of relativity? I can't find one!
*As I said, the <nowiki>{{fact}}</nowiki> tag was absolutely appropriate, and I'll reinsert it, as I don't think that there are any sources to back-up your claim.
*Furthermore, I have difficulties to believe that Lord Rutherford had problems with ''E=mc²'', he seemed to appreciate the liquid-drop-model of Gamov, Bohr, et al.
*''a general claim of equivalence between mass, energy and the speed of light'': no one claims that the '''three''' are equivalent!
[[User:AugustO|AugustO]] 11:22, 2 April 2012 (EDT)

== First sentence ==

I've changed the introduction to something a bit more encyclopaedic. Please don't revert without discussing it first. Thanks. --[[User:SamCoulter|SamCoulter]] 16:28, 2 April 2012 (EDT)

== Political Pressure ==

''Political pressure has since made it impossible for anyone pursuing an academic career in science to even question the validity of this nonsensical equation''

More likely the fact that similar experiments as the one Cockcroft and Walton are performed by undergraduates in each department teaching physics around the world! [[User:AugustO|AugustO]] 02:30, 3 April 2012 (EDT)

:No, that would not explain why it "is impossible for anyone pursuing an academic career in science to even question the validity of" E=mc2. Even if you think the formula is somehow true, surely you do not deny the political pressure in academia against anyone who might consider questioning it.--[[User:Aschlafly|Andy Schlafly]] 10:37, 3 April 2012 (EDT)
::It's entirely possible for someone who questions the validity of E=mc2 to pursue a career in science; scientists are encouraged to question the validity ''everything''. However if they ''deny'' the validity of E=mc2 then a scientific career is indeed off-limits to them, for the same reason as it's off-limits to someone who denies that 1+1=2. The fact is, E=mc2. It's been verified time and time again. --[[User:SamCoulter|SamCoulter]] 18:44, 3 April 2012 (EDT)

To talk about political pressure in this context is ridiculous. The conversion of Mass to Energy and vice versa and the validity of E=mc2 has been demonstrated experimentally so often(an early example is given in the main page) that to deny that the equation describes observed nature flies in the face of observation and is thus unscientific. To question its validity without hard experimental evidence or a sound theoretical argument (neither of which has been demonstrated) would simply be a matter of scientific (in)competance.[[User:Jloveday|Jloveday]] 15:16, 3 April 2012 (EDT)

:*Aschlafly, if you argue against ''E=mc²'' out of a position of (willful) ignorance, you won't be taken seriously. Unfortunately this is what you are doing, as your (non-) answer [[Talk:E=mc²#A few questions for Aschlafly regarding the experiment of Cockroft and Walton|above]] is showing.
:*Criticism of ''E=mc²'' on ideological grounds just doesn't work, as the adherents of the [[Deutsche Physik]] found out in the early 1940s.
:*But obviously, the theory is under constant discussion, as is the concept of energy or mass.
:[[User:AugustO|AugustO]] 18:34, 3 April 2012 (EDT)

== Matter-light relationship ==

Mr. Schafly, I think you are misunderstanding the nature of the <math>E=mc^2</math> relationship. To illustrate, I will give an example.

Suppose we have a map where 1 inch of distance on the map corresponds to 5 miles actual distance. If points A and B are located 2.5 inches apart on the map, we can compute the actual distance between them as follows:
:<math>2.5 \textrm{ map\,in} \cdot \frac{5 \textrm{ mi}}{\textrm{map\,in}} = 12.5 \textrm{ mi}</math>
In general, if the map distance between two points is <math>d</math> and the actual distance between the points is <math>D</math>, then the following formula is satisfied:
:<math>D = dc</math>
where <math>c</math> is the conversion factor <math>\frac{5 \textrm{ mi}}{\textrm{map\,in}}</math>. The equation above does not relate distance to five or map distance to quintessence. Rather, it posits a direct relationship (or equivalence) between the map distance and the actual distance, related by a conversion factor.

Likewise, <math>E=mc^2</math> posits a direct relationship between mass and energy. It does not relate mass to the speed of light (or light itself), nor does the equation related light to energy. Rather, <math>c^2</math> is a conversion factor, just like the <math>c</math> was in our equation for computing actual distances from map distances. I hope this helps explain why some editors have concern with your statement of the relationship posited by <math>E=mc^2</math>. [[User:GregG|GregG]] 00:19, 4 April 2012 (EDT)

:But Energy and mass have known meanings in other contexts, unlike the distances (in inches) on the map page in your example. If Energy or mass were being redefined by E=mc2, then I think your analogy would work. But people are not defending E=mc2 by saying it entails a redefinition of Energy or mass.--[[User:Aschlafly|Andy Schlafly]] 01:00, 4 April 2012 (EDT)
::The equation postulates how mass and energy can be interchanged while conserving the total amount of mass energy. For example, according to the equation, a nuclear reaction that causes 1.0 kg of mass to be lost will produce 9.0 x 1016 J energy. The amount of energy produced ''by the loss of mass'' is proportional to the mass lost. It is the same sort of equivalence between the number of pounds you get at a currency exchange and the number of dollars you pay (which, come to think of it, is probably an even better analogy). [[User:GregG|GregG]] 01:13, 4 April 2012 (EDT)

:::(inserted reply here) E=mc2 claims more than the relation between mass and energy is linear (which is itself implausible). It also claims that the proportional factor is precisely equal to the speed of light squared. Restating the meaning of the equation in plain terms demonstrates how implausible it is.--[[User:Aschlafly|Andy Schlafly]] 20:41, 4 April 2012 (EDT)

:::Energy and mass have known meanings in THIS context! The equation tells us how much energy will be liberated by losing a set amount of mass, or how much energy (for example hard gamma rays) is required to create a set amount of mass. It is a valid equation. It doesn't matter ''what'' objections anyone has to it based on principle or logic; it's been tested and it's correct. This is getting pretty frustrating. --[[User:SamCoulter|SamCoulter]] 01:56, 4 April 2012 (EDT)

Perhaps we should have two articles [[E=mc² (science)]] and [[E=mc² (new age)]]: every sentence Aschlafly writes on this subjects shows that he knows so very little about the science involved - and has no interest to get informed any further. Instead his methods reminds me of homeopaths and other quacks advertising their craft by misrepresenting sources, cherry-picking evidence and generally repeating false statements over and over again despite of better knowledge. [[User:AugustO|AugustO]] 02:05, 4 April 2012 (EDT)

===A question===

Mr Schlafly, you've said that this equation "purports" to describe the equivalence of matter and energy. The fact is, it's been repeatedly tested and it ''does'' describe the equivalence of matter and energy. However I get the feeling that there's some misunderstanding here. What, exactly, is your objection to E=mc2? Do you think it's incorrect - in which case go check the experimental data - or do you think it's being used to advance some sort of political agenda? I think we've reached a deadlock here and to make any progress on improving the article it would be helpful to know what you think is wrong with the equation. --[[User:SamCoulter|SamCoulter]] 02:02, 4 April 2012 (EDT)
:The problem is that it is a self-sustaining myth presented as "fact" by the same self-serving scientific establishment who have built an tautological edifice on nothing. It is designed to subtly indoctrinate children into the world of moral, social and scientific relativity by suggesting that "everything is relative".--[[User:DavidEdwards|DavidEdwards]] 17:03, 4 April 2012 (EDT)

:The equation is nonsensical. Mass has nothing to do with the speed of light, and cannot be equated to energy simply by multiplying it twice by the speed of light.--[[User:Aschlafly|Andy Schlafly]] 20:33, 4 April 2012 (EDT)
::Andy, how do you explain the result of the Cockcroft- Walton experiment? --[[User:FrederickT3|FrederickT3]] 01:42, 5 April 2012 (EDT)
:::A very good question! Aschlafly, you could try to answer it by responding to [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|this section above]]! [[User:AugustO|AugustO]] 02:01, 5 April 2012 (EDT)

== Bohr disagreed with Einstein's 1905 paper ==

Aschlafly, do you have any source for this claim? It seems to be factual incorrect. [[User:AugustO|AugustO]] 09:27, 5 April 2012 (EDT)

I looked into it and for me it is an ''ad-hoc'' fabrication to make a point - even the time-line doesn't work out: a '''''trustworthy''''' encyclopedia shouldn't work this way! [[User:AugustO|AugustO]] 12:58, 5 April 2012 (EDT)

== Some questions ==

I still don't understand why (a) Andy Schlafly doesn't know the difference between gravitational mass and inertial mass and (b) he seems obsessed over the speed of light in the equation. The m in the equation is inertial mass! As others have stated, when talking about gravitational mass, you need to consider general relativity.What E=mc^2 says is that mass is just a form of energy. It says nothing about the unification of electromagnetism and gravity (it doesn't even say anything about gravity!). Moreover, do you, Andy Schlafly, understand that electromagnetism is not the only theory that has c as a special value? All massless particles travel at the speed of light. In GR, gravity travels at the speed of light.

If you deny it, how do you account for changes in mass in nuclear reactions? How do you account for electron-positron annihilation as well as dozens of other examples of reactions that don't conserve mass in particle physics?

And by the way, as has been pointed out, if you deny special relativity, you have to reject Maxwell's equations. Are they a liberal conspiracy as well? --[[User:AndyFrankinson|AndyFrankinson]] 20:34, 5 April 2012 (EDT)

:"Usually when we speak of an object's mass we do not distinguish whether we are referring to its inertial mass or its gravitational mass. This is because the quantity of matter present in an object, i.e., its mass, does not depend on the method by which it is measured." [http://dev.physicslab.org/Document.aspx?doctype=3&filename=Dynamics_InertialGravitationalMass%25252Exml] Indeed, no measurement has ever detected a difference between the two.

:As to your second point, chemical reactions can cause energy to be released, and the remaining mass to be reduced. This is hardly astounding and certainly does not imply that E=mc2.

:Your third point is often repeated by Relativists but overlooks that Maxwell's equations were developed and demonstrated decades before the [[Theory of Relativity]]. Maxwell's equations survived just fine for years without anyone claiming that somehow E=mc2. Indeed, an assertion that people "have to reject Maxwell's equations" based on relativity suggests a mathematical approach to physics, rather than an observational one. Are you aware of how Eddington claimed that a physical constant "must" have a certain value due to some mathematical rationale? (He was wrong, of course.)--[[User:Aschlafly|Andy Schlafly]] 21:06, 5 April 2012 (EDT)

::Your first point: It's good that we all agree that inertial mass and gravitational mass are the same thing. (This is the fundamental hypothesis of general relativity, by the way.) But the term "mass" always means "inertial mass". Gravity never appears anywhere in special relativity. Even if Newton's constant of universal gravitation ("G") were zero, that is, we lived in a hypothetical universe in which there is no gravity, special relativity, the Lorentz transform, and E=mc^2 would still be true. There should be no mention of gravity anywhere in the article. But the second sentence of the article refers to "mass (i.e., gravity)". Please take that out. I would do it myself, but I'd get it wrong, since I don't know what point you were trying to make.

::Your second point: That chemical reactions that cause energy to be released result in a reduction of the final mass most certainly '''''is''''' astounding. No one had ever seen this, or suspected it, before E=mc^2, and it is doubtful that anyone has seen it to this day, since the effect is so small for chemical reactions. The phenomenon is known only because we know that E=mc^2 is true.

::Your third point: Yes, Maxwell's equations were developed decades before relativity, and survived just fine before anyone suspected that E=mc^2. Your claimed "assertion that people 'have to reject Maxwell's equations' based on relativity" is not made by anyone. It's the ''denial'' of relativity that would necessitate a denial of Maxwell's equations. Maxwell's equations imply relativity, though Maxwell didn't realize it. In fact, it was an analysis of Maxwell's equations, not the Michelson-Morley experiment, that led to relativity. If we lived in a hypothetical universe in which there were no electric or magnetic forces, relativity would still be true.

[[User:JudyJ|JudyJ]] 23:36, 5 April 2012 (EDT)

:::You didn't respond to my point about [[Arthur Eddington]], who was the biggest promoter of the [[Theory of Relativity]] in the English world.

:::Simply put, the [[Theory of Relativity]] is a mathematical theory (which, by the way, is taught in math departments in some universities); this mathematical theory has never been based on meaningful physical observations. Any statement that someone must reject Maxwell's equations if he rejects the [[Theory of Relativity]] shows how the mathematical cart can be incorrectly placed before the physical horse.--[[User:Aschlafly|Andy Schlafly]] 00:21, 6 April 2012 (EDT)
::::Of course it's been based on meaningful physical observations. To be more precise, it's based on repeated experiments where the relation between the observed mass loss and the observed energy release is E=mc2. I really don't know what your problem is, but to challenge the validity of something as thoroughly confirmed as E=mc2 is not going to get you anywhere. The equation is valid. --[[User:SamCoulter|SamCoulter]] 03:17, 6 April 2012 (EDT)

Talk:E=mc²

2012-04-04T06:11:52Z

SamCoulter: /* Matter-light relationship */

==I'm Finding This a Little Hard to Understand==
First off, E = mc2 describing a relationship between energy and matter is only one corollary. It is also part of a well known problem in chemistry... Or is isotopic mass not less than the sum of it's parts? The equation itself HAS been derived from the Theory of Relativity, and is a direct consequence of the energy momentum four vector for an object with 0-momentum. The quote you provide from the paper states that the theory is not enough for a rigorous PROOF, but it never tries to deny the derivability of the equation. Derivation and proof are two entirely different things.

==This Article Could Use Sources or Better Explanation==
Wow. Classic Andy. Unsourced statements supposedly contradicting well-established theories of physics. No real proof other than "the Bible says it's not true," even though this is an extremely uncommon interpretation Genesis. --[[User:AndreaM|AndreaM]] 01:06, 25 March 2012 (EDT)

:It's a start for now, and will expand over time. That's how wikis work.--[[User:Aschlafly|Andy Schlafly]] 01:18, 25 March 2012 (EDT)
::Doesn't it relate energy to mass? The speed of light is just a constant here. [[User:IanR|IanR]] 02:22, 25 March 2012 (EDT)

== Humbug ==

The phrase ''meaningless, almost nonsensical, statement '' (as used in the article) fits the first paragraph to a t.

Aschlafly, please try to refute the explanation of the experiments of John Cockroft and Ernest Walton, which is accepted generally under physicists. And try to give some sources - or if not, some of your own calculations!

If not, just erase the first section.

[[User:AugustO|AugustO]] 11:23, 25 March 2012 (EDT)

== Nobel Lecture ==

I took out the link to the Nobel lecture, it can be found in the short summary. But be aware that John Cockroft is using the dreaded formula with ease (but without stating so explicitly - why should he, it's already generally accepted!) An astute reader, who not only searches for the formula finds e.g., the formulation:

:'''This energy could be provided by a diminution of mass of 0.0184 mass units.'''

Indeed, these are the ≈ 17MeV!
[[User:AugustO|AugustO]] 11:51, 25 March 2012 (EDT)

==Irrelevant claims==
Are these claims of so called "experimental verification" valid or useful? If you look at enough so-called science you can find people claiming anything. --[[User:DavidEdwards|DavidEdwards]] 12:59, 25 March 2012 (EDT)
:''you can find people claiming anything'' Indeed - and that's why there is a difference between the unsubstantiated claims in the first section, and the actual experiments in the following paragraphs. If you have a good explanation of the outcome of these experiments (some math would be nice), feel free to add your personal ''claim''.
:[[User:AugustO|AugustO]] 13:03, 25 March 2012 (EDT)
::Why do you feel that I need to do that? I understand that you may wish to believe relativity is true, but that is no reason to impose your personal beliefs on others.--[[User:DavidEdwards|DavidEdwards]] 13:40, 25 March 2012 (EDT)
:::Thinking that all claims have the same validity seems not a very conservative position. I don't expect you to accept my personal beliefs, but there is a tendency in physics that the claims which are backed up by those willing to do the experiments and the maths have a greater following than random insights. [[User:AugustO|AugustO]] 13:47, 25 March 2012 (EDT)
::::I don't understand why your personal beliefs are even included in the article.--[[User:DavidEdwards|DavidEdwards]] 13:58, 25 March 2012 (EDT)
:::::*Because they are bolstered by experiments...
:::::*...and they aren't just my beliefs - in fact it will be very hard to find a physicist who doesn't share them. And that's something which shouldn't be easy to ignore in an article on a physical subject.
:::::[[User:AugustO|AugustO]] 14:02, 25 March 2012 (EDT)
::::::If science is your religion then you will find scientists who share your views. I still don't see why they should be hosted here. The introduction makes the Biblical position clear.--[[User:DavidEdwards|DavidEdwards]] 14:07, 25 March 2012 (EDT)
:::::::Religion is my religion, science is my hobby. And just because there is one single interpretation of a few verses of Genesis out there which you think to contradict the experiments of the physicists doesn't shatter my religious beliefs nor my trust in physics. [[User:AugustO|AugustO]] 14:35, 25 March 2012 (EDT)
::::::::Then why do you insist with this anti-religious pseudoscience?--[[User:DavidEdwards|DavidEdwards]] 14:41, 25 March 2012 (EDT)
← Now you have intrigued me: what's your definition of pseudoscience? [[User:AugustO|AugustO]] 14:45, 25 March 2012 (EDT)

Pssst! DavidEdwards! You're trying waaaaay too hard. --[[User:JoshuaB|JoshuaB]] 21:20, 25 March 2012 (EDT)
:Too hard about what?
:As far as the pseudoscience question is concerned - "science" which is used to promote a worldview which has no basis in moral reality is pseudoscience. Science which is designed to suggest that morality is relative clearly falls into this category.--[[User:DavidEdwards|DavidEdwards]] 18:40, 26 March 2012 (EDT)

==Question==
This snipet of sentence appears in the introduction: "...''a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory.''" Let's compare that to the entire sentence it was lifted from: "'''''Leaving aside that it continues to be affirmed experimentally,''' a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory.''" One can't help but notice that the part of the sentence that states that the theory has been observed to be valid in real world experimentation, has been surgically removed. Why is this? Is it because it stands in contradiction to the claim the lead author of this article is trying to promulgate? --[[User:JoshuaB|JoshuaB]] 20:55, 25 March 2012 (EDT)

:Peer-reviewed journals won't publish a criticism of relativity. That's obvious. Although I don't have a copy of the full paper, I doubt it attempts to fully support the [[hearsay]] that was excluded, and I would not be surprised if it was included simply to safeguard against complaints for what followed. It adds nothing to the basic point that follows and is quoted here.--[[User:Aschlafly|Andy Schlafly]] 21:19, 25 March 2012 (EDT)

::Why won't a peer-reviewed journal publish a criticism of SR or GR? Liberal conspiracy? Also, do you not accept that mass and energy are interchangeable or is it a problem with this specific equation? --[[User:JoshuaB|JoshuaB]] 21:24, 25 March 2012 (EDT)

:::JoshuaB, do you accept the possibility that the [[Theory of Relativity]] may be false, and would you approve a well-written paper that criticized it? It's a simple "yes" or "no" question.--[[User:Aschlafly|Andy Schlafly]] 21:55, 25 March 2012 (EDT)

::::Yes. We already know the Theory of Relativity is an incomplete model of our universe. So yes, the theory may be "false", but the one that takes it's place will most likely have many of the same properties. Secondly, would I approve of a "well-written paper that criticized it"? I don't know what that means. I'm not a physicist, so I don't see what difference my "approval" of said paper would make. Now that I've been so kind as to answer your questions, would you return the courtesy and answer the ones I posted above? --[[User:JoshuaB|JoshuaB]] 22:35, 25 March 2012 (EDT)

:::::The qualifications on your answer render it almost meaningless. I'm not asking whether your approval of a paper would make a difference, or your opinion about whether you think the replacement of the [[Theory of Relativity]] will "most likely" be another theory of relativity. The question was simple and straightforward, referring to a paper critical of the theory of relativity without any appeasement to those who insist on believing in it. An unqualified answer is requested.

:::::Also, did you ever answer my simple question on [[Talk:Main Page]] about how much time you've spent reading the [[Bible]] this month?--[[User:Aschlafly|Andy Schlafly]] 22:50, 25 March 2012 (EDT)

::::::Come off it Schlafly. This article is not about my Bible reading, is it? No. Does my opinion of the publishing criteria of physics academia have any bearing on the assertions you are trying make? No. Again: Do you not accept that mass and energy are interchangeable or is it a problem with this specific equation? --[[User:JoshuaB|JoshuaB]] 23:11, 25 March 2012 (EDT)

:::Andy, do you accept the possibility that the Theory of Relativity may be correct, and would you approve a well-written paper or book that supported it? It's a simple "yes" or "no" question. --[[User:FrederickT3|FrederickT3]] 03:28, 26 March 2012 (EDT)

== Some points ==

*''Misplaced claims of experimental verification'': if you want to put on the disclaimer ''misplaced'', please explain the results of the experiments in another way.
*''Why won't a peer-reviewed journal publish a criticism of SR or GR?'' But they do: remember the neutrino thing? Or the papers of H. Ives? In fact the first event has shown that especially the publication of experiments (seemingly) violating currently accepted theories gets attention!
*Taking only the second half of ''"Leaving aside that it continues to be affirmed experimentally, a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory."'' makes you looking deceptive. Take the whole sentence and try to explain the motivation of the first half. Otherwise anyone who looks the quote up will suspect an ulterior motive!
*The whole first section is a train wreck.
*''[[Mass]] is a measure of an object's inertia, and is directly related to the forces of [[gravity]].'' Only when you accept the general theory of relativity it is, otherwise inertial mass and gravitational mass are quite different animals.
[[User:AugustO|AugustO]] 02:46, 26 March 2012 (EDT)

::I have attempted to clarify the last point on the [[Mass]] page, and also removed the fact template from the first paragraph, since the explanation is given later on. As it stood, the "citation needed" banners following important points tended to undercut the authority of the article.--[[User:CPalmer|CPalmer]] 08:29, 26 March 2012 (EDT)
::The problem is not a confusion of weight and mass, but the conflation of gravitational and inertial mass. In the classical theory, there is no reason why both should be the same, it's just an experimental fact.
::So, I'm sorry, your new entry didn't help.
::[[User:AugustO|AugustO]] 08:40, 26 March 2012 (EDT)

:::But they always are the same, aren't they? I don't see why knowing or not knowing the reason (yet) has any bearing on the question.--[[User:CPalmer|CPalmer]] 08:43, 26 March 2012 (EDT)

::::Aschlafly writes: ''Mass is a measure of an object's inertia, and is directly related to the forces of gravity. In contrast, the intrinsic energy of an object (such as an atom) is a function of electrostatic charge and other non-inertial forces, having nothing to do with gravity.''
::::E=mc² isn't about gravity, to invoke it here is a deflection. [[User:AugustO|AugustO]] 08:49, 26 March 2012 (EDT)

::::: OK. But bear in mind that this page clearly exists to provide a counterweight to certain liberal views. To do that, clarity of message is needed, and a "citation needed" banner has a deflating effect on the strength of that clarity. So perhaps you could suggest a wording that might be acceptable without the "citation needed" bit?--[[User:CPalmer|CPalmer]] 09:03, 26 March 2012 (EDT)

No, I can't. Frankly, I don't see the clarity in this piece: at the moment, it is still sadly missing. So I hope, that Aschlafly taking care of the fact-tags (other then trimming them away) will add to this clarity! [[User:AugustO|AugustO]] 09:13, 26 March 2012 (EDT)

== Examples of how meaningless E=mc² is: descriptions for the layman ==

Try to explain a complicated formula in 1-2min, then have a single sentence of this soundbit taken out. You can bet that this may sound meaningless. That's no fault of the formula. I'll change the title back. [[User:AugustO|AugustO]] 09:58, 26 March 2012 (EDT)

:The quotes (and others that could be added) illustrate how meaningless the formula is.--[[User:Aschlafly|Andy Schlafly]] 10:02, 26 March 2012 (EDT)
::The quotes illustrate how difficult it is to explain the concept to a layman. Take a look [http://www.pbs.org/wgbh/nova/einstein/expe-text.html here], where you can find the quotes in context. [[User:AugustO|AugustO]] 10:16, 26 March 2012 (EDT)

:::The quotes were solicited to describe the meaning of the equation to laymen, not to illustrate how difficult that is. The difficulty arises from the meaningless nature of the equation.--[[User:Aschlafly|Andy Schlafly]] 11:01, 26 March 2012 (EDT)
::::Actually the meaning of the equation is very clear: the total energy contained in matter is its mass multiplied by the speed of light in a vaccum squared. Experiment after experiment, and nuclear reactor after nuclear reactor, has clearly demonstrated that the total energy released by a reaction is the lost mass multiplied by c2. Therefore whether the theories of relativity are true or not, E=mc2 is true. Equally, even if classical Newtonian mechanics was false, the kinetic energy of a moving mass would still be accurately described by Ek=1/2mv2. --[[User:SamCoulter|SamCoulter]] 16:34, 28 March 2012 (EDT)
::::Indeed. Internet quotes are really not very useful. A skilled researcher can always find someone saying something to justify their position however bizarre or immoral. This is a typical weakness (and response!) of those who have no real moral or religious basis for their convictions. --[[User:DavidEdwards|DavidEdwards]] 19:04, 26 March 2012 (EDT)
::::These quotes are absolutely meaningless. It looks like you took random sentences from the PBS article and then inserted them into the article as if they had any real significance. This is made even more moot when you consider the fact that the article claims that "Ten top physicists were asked to describe in laymen's terms E=mc²" and then you go on to quote three. Not to mention, most of the quotes aren't actually explaining what the equation means - a basic understanding of algebra and what the symbols mean is sufficient to understand its basic meaning - but rather what it entails, its implications. Tim Halpin-Healy's quote I think is better than taking some random sentences and then implying that they mean that physicists don't know what E=mc² means. --[[User:Tyg13|Tyg13]] 15:58, 1 April 2012 (EDT)

:::::The problem is that '''E=m2does not meaning anythimg that makes sense. Anyone is welcome to try to explain it here. Eating a pound of cake does not cause one's energy to increase by the speed of light squared.--[[User:Aschlafly|Andy Schlafly]] 16:06, 1 April 2012 (EDT)
::::::No, it doesn't. It causes your energy to increase by a number of foot-pounds equal to '''one pound''' times the speed of light squared. I've explained this to you already and it isn't difficult. --[[User:SamCoulter|SamCoulter]] 16:23, 1 April 2012 (EDT)
:At any rate, eating a pound of cake, is not nuclear physics, it is chemistry, where your cells digest and utilize the sugars within. Protiens are also converted into sugar.[[User:JonM|JonM]] 18:28, 1 April 2012 (EDT)

== Aschlafly, could you give us... ==

... your interpretation of the results of the experiment by Cockroft and Walton? Cockroft describes in his Nobel Lecture how the kinetic energy of the alpha-particles could be provided by ''diminution of mass of 0.0184 mass
units.'' (p. 170). Please take into account that this isn't about energy in form of electromagnetic waves!

If you don't address the results of the actual experiments, all your claims are just meaningless verbiage.
[[User:AugustO|AugustO]] 10:39, 26 March 2012 (EDT)

:Cockcroft (please spell his name correctly) does not even cite E=mc2 in his Nobel lecture.--[[User:Aschlafly|Andy Schlafly]] 11:01, 26 March 2012 (EDT)
::You don't think that it is ''implied'' by the quote that AugustO provided? --[[User:FrederickT3|FrederickT3]] 11:10, 26 March 2012 (EDT)

:::No, I don't. E=mc2 is supposedly a general truth of universal applicability. The case for it, if true, needs to be far stronger than what is quoted above.--[[User:Aschlafly|Andy Schlafly]] 11:15, 26 March 2012 (EDT)

From the lecture: ''It was obvious then that lithium was being disintegrated into two α-particles with a total energy release of 17.2 million volts. This energy could be provided by a diminution of mass of 0.0184 mass
units.''

Aschlafly, your ignorance is showing:
17.2 MeV /c² = 1.602*10-19kg m²/s² *17.2 *109/(3*108 m/s)² = 3.0616 * 10-29kg = 0.0184 amu

In fact as this is such a ''general truth of universal applicability'', J. Cockroft could take it for granted that his scientifically literate audience would be able to make this calculation.
[[User:AugustO|AugustO]] 11:26, 26 March 2012 (EDT)

:::One question, though: We have four protons and four neutrons on the left hand side of the equation, and four protons and four neutrons on the right hand side. So why the difference in mass?
:::Also, forgive my ignorance, but why is the 'energy' measured in volts? Volts are not a measure of energy.--[[User:CPalmer|CPalmer]] 11:40, 26 March 2012 (EDT)

*Bainbridge measured the mass of 7Li directly, using mass spectrometry.
*Indeed, three protons and four neutrons weight less than a 7Li - kernel
*Energy is measured in this cases in [[Electron-Volts]]. One electron volt is the energy of an electron which passed through a potential of 1 Volt.
[[User:AugustO|AugustO]] 11:54, 26 March 2012 (EDT)
:AugustO, please contribute something substantive instead of talking up a storm. Thanks.--[[User:JamesWilson|James Wilson]] 11:56, 26 March 2012 (EDT)
:::James Wilson, please don't interfere in interesting and substantive discussions. Thank you! [[User:Baobab|Baobab]] 12:12, 26 March 2012 (EDT)
::::"Baobab", please state what substance is coming out of this conversation. You have had a history of engaging in hefty talk. Please start contributing. I have had some great insights contributing in a few articles today and will continue to do so. Many thanks for your future contributions.--[[User:JamesWilson|James Wilson]] 12:47, 26 March 2012 (EDT)
:::::"James Wilson", AugustO is clarifying things and giving us some great insights, as CPalmer's latest reply shows. Discussions will often lead to better articles, which is why your interference was totally uncalled for. I guess your only motive was to defend Mr. Schlafly, but he can take care of himself and really doesn't need your help. Regards, [[User:Baobab|Baobab]] 13:30, 26 March 2012 (EDT)
::Thanks, AugustO. Relativity or no relativity, I am learning a lot from this discussion.--[[User:CPalmer|CPalmer]] 12:00, 26 March 2012 (EDT)
:::You are posing excellent questions! Indeed it should be of interest for Aschlafly, too:
:::'''Aschlafly, two protons (1.0073amu) and two neutrons (1.0087amu) have a combined mass of 4.0320 amu. An alpha-particle - existing from two protons and two neutrons - has a mass of 4.0015 amu. How do you explain this diminution of mass?
:::[[User:AugustO|AugustO]] 13:42, 26 March 2012 (EDT)
::::What real evidence do you have that these particles even exist? No doubt you've read it in a book or some "qualified person" has said it is true. In reality you accept these things on the word of somebody else - in other words your belief in the existence of these particles is a matter of scientific faith in something which you have no personal knowledge. There is obviously no problem with believing things on faith, but please don't pretend it's "true because science says it's true". Christians get their real truth from a higher authority.--[[User:DavidEdwards|DavidEdwards]] 18:49, 26 March 2012 (EDT)
:::::I find Mr O's position to be rather odd. He insists that Mr Schlafly - and only Mr Schlafly answers his questions. Yet at the same time Mr O steadfastly ignores comments specifically directed at him.--[[User:DavidEdwards|DavidEdwards]] 16:11, 28 March 2012 (EDT)
::::::If you're referring to your question about how he knows that protons and neutrons really exist, I suspect he thought it wasn't worth answering. I tend to agree. --[[User:SamCoulter|SamCoulter]] 16:15, 28 March 2012 (EDT)

@DavidEdwards: Sorry, [[User:DavidEdwards|DavidEdwards]], I didn't want to ignore you. I hadn't caught up after the databank mishap, I'm afraid.
So, to answer your questions: At school, we performed a couple experiments -there were teltron tubes, the Millikan the photo-electric effect, the Millikan Oil Drop experiment, de Broglie's electron diffraction experiments, etc. These experiments confirmed my persuasion that the electrons, protons and neutrons are physically real entities. The proposed theories explained these effects - and sitting in front of a computer, I'm surprised that you aren't willing to accept the theories behind semi-conductors. [[User:AugustO|AugustO]] 16:25, 28 March 2012 (EDT)
@SamCoulter: There is some truth in your statement, too: it's like asking a priest: ''let's talk about your religion without mentioning Jesus''... [[User:AugustO|AugustO]] 16:28, 28 March 2012 (EDT)

== Restoration ==

I could restore this page to the last version which I had edited. I don't know whether there were more entries. This should help to restore the article: perhaps one positive effect could be that Aschlafly marvels about the questions in the previous section for a while and rethinks his position! [[User:AugustO|AugustO]] 18:36, 26 March 2012 (EDT)

== Instead of the source - tag ==

*''E=mc² is a meaningless, almost nonsensical, statement in physics that purports to relate all matter to light.''
It relates matter to energy, the square of the speed of light is just the conversation factor
*''In fact, no theory has successfully unified the laws governing mass (i.e., gravity) with the laws governing light (i.e., electromagnetism).''
It isn't about gravitational mass, but about inertial mass. To identify both means to invoke the General Theory of Relativity
* ''Simply put, E=mc² is liberal claptrap. ''
How so? It works!
* ''Biblical Scientific Foreknowledge predicts that a unified theory of all the laws of physics is impossible, because light and matter were created at different times, in different ways, as described in the Book of Genesis.''
So, physicists should just give up looking for it? I dare to say that there are many Christian physicists - they may just not follow your special interpretation of Genesis!
[[User:AugustO|AugustO]] 09:29, 27 March 2012 (EDT)

== A few questions for Aschlafly regarding the experiment of Cockroft and Walton ==

I'd appreciate an answer by Aschlafly (and him alone) to the following questions:

'''1.''' Do you accept that the mass of the Lithium-kernel (7Li), of alpha-particles (4He) and of protons (1H) can be measured fairly accurately, as these are charged particles?

'''2.''' Do you accept the measurements for the mass of the particles as used by Cockroft and Walton, i.e.
:::{|
!particle
!mass
|-
|1H||1.0072 amu
|-
|4He||4.0011 amu
|-
|7Li||7.0130 amu
|}
If not, which values do you think to be right?

'''3.''' Do you agree that before the reaction the mass of the particles involved was 8.0202 amu?

'''4.''' Do you agree that after the reaction the mass of the particles involved is 8.00220 amu?

'''5.''' Do you agree that there is a mass decrease of 0.0180 amu?

'''6.''' Before the experiment, the Li was at rest and the proton had a kinetic energy of less than 1MeV. Do you accept these values?

'''7.''' After the experiment, a pair of alpha-particles was observed, both having an kinetic energy of 8.6MeV. Do you think that this value is correct?

'''8.''' Can you tell me where the mass went? Can you tell me where the energy came from?

'''9.''' If your answer to question 8. is ''no'' in both accounts, than my answer is that there is a theory which explains the conversion of mass to energy, even if you don't like it!

As this theory works for this experiment, and for all the other fissions and fusions, it isn't liberal claptrap, but a meaningful theory. And you can't blame physicists for using it! Of course, you can blame journalist to abuse the formula - but this isn't the result of ''liberal physics'', but of ''bad reporting'', as an abuse of the dictum ''1+1=2'' doesn't reflect badly on number-theorists, but only on the person misattributing it.

Thanks, [[User:AugustO|AugustO]] 08:04, 28 March 2012 (EDT)

:AugustO, chemical reactions can release energy, typically based not on the size of their mass but on the electrostatic energy prior to the reaction. Cockcroft's own paper accepting the Nobel Prize does not claim that his work proved that '''''E=mc2'''''. Undoubtedly many other experiments contradict the formula, or else we'd have seen far more claims of experimental verification of it.--[[User:Aschlafly|Andy Schlafly]] 11:20, 31 March 2012 (EDT)

Aschlafly, you haven't answered any of the questions above! Instead you are talking about something completely different:
*We are not talking about a ''chemical'' reaction! You should know the difference.
*Cockroft claims that the energy comes from the loss of mass - and he calculates it according to ''E=mc²''. Please read (and understand!) his lecture.
*Please give a list of a few (or at least a single) experiment which contradicts the formula. This should be easy, as you stated that ''Undoubtedly many other experiments contradict the formula''. Oh, wait, you made that up...
*Please answer the questions 1 to 9: all the question are covered in Cockroft's lecture, so I'd be interested in your explanation!
[[User:AugustO|AugustO]] 11:32, 31 March 2012 (EDT)
:AugustO, if you cannot even spell Cockcroft's name properly, how can Andy take anything you say seriously? --[[User:AndreaM|AndreaM]] 22:03, 31 March 2012 (EDT)

== Move ==

Could you please move this article to [[Essay:E=mc²]]? Then I could ignore all the misleading and outright wrong statements in the first section! Thanks, [[User:AugustO|AugustO]] 15:57, 28 March 2012 (EDT)

== Experimental Facts ==

Aschlafly, on the one hand side, you state that ''no experiment distinguishes between "gravitational" and "inertial" mass'' - and that seems good enough for you. On the other hand side, you have a problem with the statement that E=mc² ''continues to be affirmed experimentally''. Do you spot the inconsistency? Indeed, I could write: ''the equivalence between inertial mass and gravitational mass has never been mathematically derived from first principles in classical mechanics, indeed, a rigorous proof of this equivalence is probably beyond the purview of classical theory.''

BTW, omitting the first part of the sentence ''"Leaving aside that it continues to be affirmed experimentally..."'' makes you look very disingenuous (even if you have good motives) to anyone who looks up the link to the abstract!

[[User:AugustO|AugustO]] 16:07, 28 March 2012 (EDT)

:It's hair-splitting jargon of doubtful significance. 99% of people know what mass is, and it's directly related to weight, not electrostatic energy.--[[User:Aschlafly|Andy Schlafly]] 16:38, 28 March 2012 (EDT)
::And the remaining percent are the physicists which draw such distinctions with good reason! [[User:AugustO|AugustO]]
:::Even more confusing is that the article states mass is a measure of inertia. Inertia is resistance to acceleration, and that has nothing to do with gravity at all. The article as it stands is simply inaccurate. --[[User:SamCoulter|SamCoulter]] 16:51, 28 March 2012 (EDT)

::::Aschlafly: ''....may not even have any justification in the paper''
::::Aschlafly, havn't you read the paper? Here is a part of the conclusion:
:::::''Einstein produced about 18 virtuoso derivations and demonstrations all aimed at establishing the mass-energy principle. We have shown that although each of them gave evidence for the applicability of E0 = mc² to a particular set of circumstances, no one derivation, or collection of them taken together, succeeded in providing a definitive proof of its complete generality. That should not be surprising because the same situation occurs, for example, with F = ma, which is a different kind of relation than E0 = mc². Even so, 300 years of successful theoretical work have not proven the correctness of F = ma. Indeed, relativity showed that this expression, one of the bedrocks of classical mechanics, holds only approximately.
::::Here is another excerpt, on mass, electromagnetism etc:
:::::''In the 19th century, a number of European physicists, including the leading theoretician of the time, Hendrik Lorentz, were working to establish that mass was, in whole or in part, electromagnetic. There were primarily two competing theories, one by Lorentz, the other by Max Abraham. Both agreed that depending on the relative direction of its velocity and acceleration, an “electron” a generic charged particle moving through the aether could manifest both transverse and longitudinal speed-dependent mass components. There was even experimental evidence that seemed to confirm as much. Electromagnetic theory was then at the center of physics.''
::::[[User:AugustO|AugustO]] 16:56, 28 March 2012 (EDT)

::::(May I add that I think one shouldn't make such fundamental statements as ''E=mc² has no meaning'', if one only skims a few abstracts! [[User:AugustO|AugustO]])

Aschlafly, maybe you have not the time (or the access) to read the actual papers - as you should when drawing conclusions. But perhaps you can take a look at [http://www.lbl.gov/abc/Basic.html Lawrence Berkeley National Laboratory's ABC of Nuclear Science] to refresh the basics?Even there, they use ''Einstein's famous equation...''... [[User:AugustO|AugustO]] 08:44, 29 March 2012 (EDT)

== ...purports to relate all matter to light ==

When I write that for iron I get:
::V [cm³] * 7.874 g/cm³ = M [g]
I don't relate the mass to 7.8474, but to the volume. So, similarly Einstein's equations says that mass is proportional to energy, not light. [[User:AugustO|AugustO]] 10:38, 29 March 2012 (EDT)
:But the constant applied in this case is the (square of the) speed of light! Are you saying that that is a coincidence? If so, why not just say "E=mc"?--[[User:CPalmer|CPalmer]] 10:57, 29 March 2012 (EDT)
::no, of course not, but we could write, e.g., Eε0 = m/μ0: the relationship is given between mass and energy... [[User:AugustO|AugustO]] 11:04, 29 March 2012 (EDT)
:::But the relationship itself is somehow connected to light. Or maybe, the relationship is connected with some third factor that also determines the speed of light.--[[User:CPalmer|CPalmer]] 11:58, 29 March 2012 (EDT)
::::yes, but the c² is a constant. Does the equation E/c²=m relate all energy to light? [[User:AugustO|AugustO]] 12:18, 29 March 2012 (EDT)
:::::Yes - the equation in any form relates mass, energy, and the speed of light. I think the article doesn't emphasise the light-energy relationship because it's the mass-energy relationship that appears absurd once the theory of relativity is discounted.--[[User:CPalmer|CPalmer]] 12:22, 29 March 2012 (EDT)

Even if you discount the theory of relativity, the experimental facts remain: in experiments where mass is deleted or created, this happens with the release or absorption of energy. And this energy is given by ≈8.99*1016m²/s² times the mass... [[User:AugustO|AugustO]] 13:31, 29 March 2012 (EDT)

== Misleading footnote ==

::(Your footnote about the units is bogus. SI units are not arbitrary, since eg Joules can be derived from other SI units including kilograms, metres and seconds. Therefore, the relationship to light ''is'' (purported to be) a natural one.)--[[User:CPalmer|CPalmer]] 11:00, 29 March 2012 (EDT)

Which footnote about units? [[User:AugustO|AugustO]] 11:04, 29 March 2012 (EDT)

Ah, I see, no, not ''my'' footnote. The text was inserted by [[User:GregG/RSS_6#Mon.2C_26_Mar_2012_18:05:11_GMT_.28edit_by_MihailD.29_2|MihailD]], and obviously the equation holds in other systems, too. [[User:AugustO|AugustO]] 11:10, 29 March 2012 (EDT)

I took out the main part of the footnote: it should be obvious that in a physical equation only compatible physical units can be used, and that otherwise conversion factors have to be introduced. But there is no problem, if we have c in feet/h, m in pounds, and E in pound*feet²/h²
[[User:AugustO|AugustO]] 11:30, 29 March 2012 (EDT)

:I see - my apologies. I thought you had added the footnote in order to try and make the point above. I agree that in any sensible unit system the equation will work (assuming the theory is right of course).--[[User:CPalmer|CPalmer]] 11:32, 29 March 2012 (EDT)

:Looks like [[User:MihailD|MihailD]] received a lifetime block for this and related edits, so he'll be unable to explain or justify his comments. --[[User:JasperK|JasperK]] 08:58, 30 March 2012 (EDT)

::That's a pity! [[User:AugustO|AugustO]] 09:38, 30 March 2012 (EDT)

== We will, we will, we will ==

Generally I enjoy the great contribution of SamHB. My only rub: the ''royal we'' - ''we will dispel'', ''we will show'', ''we don't do''. I don't think that this is the best way to phrase an encyclopedic article, and I'd like to see alternatives. For the moments, I just commented out some of the occurrences which in my opinion spoiled the fun of reading the article....

[[User:AugustO|AugustO]] 09:38, 30 March 2012 (EDT)

:It is a bit chatty. The first one could be rephrased "This article sets out to...". I have reworded two of the others, and the rest might possibly be omitted entirely.--[[User:CPalmer|CPalmer]] 09:44, 30 March 2012 (EDT)

== I don't understand... ==

Why you guys destroyed a wonderful original piece of work by Mr. Schlafly. There are hundreds of books and web sites that explain relativity, why did you feel the need to reproduce that content here? --[[User:AlejandroH|AlejandroH]] 16:18, 30 March 2012 (EDT)
:Perhaps because they are right and he is wrong? [[User:AugustO|AugustO]] 16:39, 30 March 2012 (EDT)

::Aschlafly, you still haven't answered my [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|reasonable questions abouts this subject]]. To be ignorant on a subject isn't that big a deal, but to willfully stay ignorant while lecturing about it, that is! [[User:AugustO|AugustO]] 17:32, 30 March 2012 (EDT)

BTW, the ''wonderful original piece of work'' was not destroyed - you find it embedded in the text. A blanket reversion of the work of a couple of editors should be a no-no, please give reasons for reverting at least for each paragraph! And answer the [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|questions!]] [[User:AugustO|AugustO]] 17:42, 30 March 2012 (EDT)

== Protection of the Article ==

Stated reason: ''(with reluctance, and repeated reversions; for now, post specific suggestions for edits on the talk page)''

Aschlafly, this must be one of these definitions of irony, as I asked for specific reasons for your deletions of material. Isn't that censorship? BTW, you still haven't replied to the [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|sections above]], and frankly I'm starting to call your knowledge on this matter in question! Ignorance is not always bliss!

And if you are not willing to address the points made above by various contributors, are you at least willing to read and answer to ''specific suggestions for edits on the talk page''? Or is this a sham to force-feed your view to the readers?

[[User:AugustO|AugustO]] 18:39, 30 March 2012 (EDT)

:The lead focus of the entry was converted into a parade of [[hearsay]] rather than logical analysis. Simply put, the entry had denigrated into the ''antithesis'' of the truth-seeking integrity expected of ''Conservapedia''.--[[User:Aschlafly|Andy Schlafly]] 19:41, 30 March 2012 (EDT)
::And what about the current entry? The fact is that E=mc2 is a perfectly valid equation demonstrating the equivalence of matter and energy and it has been thoroughly verified; the energy a piece of matter contains DOES equal its mass times ''c'' squared. This has been repeatedly demonstrated by experiments, which consistently show that the energy released by a reaction is equal within measuring limits to the overall mass lost. It's perfectly reasonable to reject any claim that this demonstrates the truth of moral relativism, atheism or anything else, but to criticise the equation itself as "meaningless" or "liberal claptrap" demonstrates no truth-seeking or integrity. E=mc2 is no more liberal than d=vt or 1+1=2. --[[User:SamCoulter|SamCoulter]] 19:53, 30 March 2012 (EDT)

:::The entry explains how nonsensical the formula is as a general principle -- and how it has never been derived as a matter of logic or demonstrated in any general, meaningful manner. Reliance on [[hearsay]] is not a serious alternative.--[[User:Aschlafly|Andy Schlafly]] 20:24, 30 March 2012 (EDT)

::::But it ''isn't'' a general principle. It's a mathematical expression of matter-energy equivalence and it's perfectly valid. Whether or not it's ever been derived as a matter of logic or not is irrelevant because it's been repeatedly demonstrated to be true in the most meaningful manner possible: if you turn matter into energy the amount of energy that comes out is always equal to the lost mass times ''c'' squared. --[[User:SamCoulter|SamCoulter]] 20:59, 30 March 2012 (EDT)

:::::You restate the claim as though its repetition would make it true. It doesn't. If someone gains one pound in weight, then it is preposterous for anyone to claim that his energy has thereby increased in proportion to the speed of light squared.--[[User:Aschlafly|Andy Schlafly]] 21:07, 30 March 2012 (EDT)

::::::Yes, it would be absolutely preposterous. In fact his energy would have increased by a number of foot-pounds equal to one pound times ''c''2 in feet per second. --[[User:SamCoulter|SamCoulter]] 21:11, 30 March 2012 (EDT)
:::::::To explain that further, his energy would have increased in proportion to his '''weight''', not to the speed of light. If a person who weighed 150lb gained 1lb the energy contained in their mass would increase from 1.4467x1017 ft lb to 1.4564x1017 ft lb. --[[User:SamCoulter|SamCoulter]] 21:39, 30 March 2012 (EDT)

::::::::The formula '''E=mc2''' does assert that his energy for a fixed gain in weight would increase in proportion to the speed of light squared and, as you say, that is preposterous.--[[User:Aschlafly|Andy Schlafly]] 23:37, 30 March 2012 (EDT)

:::::::::No, his energy for a fixed gain in weight will increase in proportion to his '''weight'''. In my example of a 150lb man gaining 1lb, his new energy content will be 0.6667% higher, '''as will his weight'''. ''c''2 is just a constant. --[[User:SamCoulter|SamCoulter]] 00:52, 31 March 2012 (EDT)
::::::::::Andy seems to imagine that this energy should be immediately available for sports or doing work around the house, and that we should all be superheroes after having eaten a bar of chocolate. This is, of course, not so. The energy is still locked up in the mass, and it would require nuclear or particle reactions to convert even small parts of it into useful forms of energy. --[[User:FrederickT3|FrederickT3]] 03:28, 31 March 2012 (EDT)
''The lead focus of the entry was converted into a parade of [[hearsay]] rather than logical analysis''. Then let's get factual: just answer a [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|few questions]]. Shouldn't be difficult, as you are so insightful. [[User:AugustO|AugustO]] 01:26, 31 March 2012 (EDT)

Of course this is hearsay - and so it should be. Conservapedia is an encyclopedia - a collection of established information cited from other sources. Hearsay may be inappropriate in court, but it is the lifeblood of an encyclopedia. Anything that is not 'hearsay' is personal opinion or original research, and should be reserved for articles prefixed 'Essay:'. --[[User:JasperK|JasperK]] 08:23, 1 April 2012 (EDT)

:Then again, heresy tends to be more reputable when it comes from a professional who has studied the issue for years, instead of a man who doesn't understand how food works. [[User:JackFerner|JackFerner]] 12:23, 2 April 2012 (EDT)

== Bare links ==

I noticed that [http://conservapedia.com/index.php?title=E%3Dmc%C2%B2&diff=971455&oldid=971446 this edit] removed publication information about the references. Personally, I think this information is useful for two reasons: it helps Conservapedia editors locate the references from other sources if (and when) the links go dead, and it helps who print out Conservapedia articles and wish to look up the references offline. (Of course, I'm not suggesting that the URLs be removed, but this could be in addition to the publication information). Of course, there may be perfectly good reasons for removing the publication information of which I am not aware, but I otherwise think that the publication information should be included again (and I plan to do this once the protection expires). [[User:GregG|GregG]] 23:17, 30 March 2012 (EDT)

:Great point. I retrieved and added many of the citations back. If I missed any then I'd be happy to add them also.--[[User:Aschlafly|Andy Schlafly]] 23:37, 30 March 2012 (EDT)

== Niels Bohr ==
Andy, for how often you rail against the Nobel Prize I'm surprised that you would try and use a former winner as an authority to support your misguided assertion. [[User:DennisR|DennisR]] 21:48, 1 April 2012 (EDT)

:Even a broken clock (like the Nobel Prize) gets it right every once in a while!--[[User:Aschlafly|Andy Schlafly]] 22:07, 1 April 2012 (EDT)

::''. As a general claim of equivalence between mass, energy and the speed of light, it was widely rejected at the time by the leading 20th century physicists, including Niels Bohr. '' Who were these physicists? And what said Niels Bohr? I couldn't find anything. In the famous ''Gedankenexperiment'' at Solvay, he accepted ''E=mc²! [[User:AugustO|AugustO]] 02:14, 2 April 2012 (EDT)

:::And of course it ''isn't'' a "general claim of equivalence between mass, energy and the speed of light." It's a statement of equivalence between energy and matter. Andy seems to be obsessed with the idea that light is involved somehow, and that conflicts with his rather odd idea that the Bible forbids a unified theory. I can only wonder what he'll do if science comes up with a unified theory. Probably deny that too. --[[User:SamCoulter|SamCoulter]] 02:16, 2 April 2012 (EDT)

Aschlafly, according to the information I found (Einstein and Bohr at the Solvay-conference), Niels Bohr accepted ''E=mc²''. So, a fact-tag was the only alternative to downright deleting the sentence: it allows you to bring up your sources! [[User:AugustO|AugustO]] 02:31, 2 April 2012 (EDT)
:I'd have been amazed if he hadn't. Bohr was on the British team for the Manhattan Project, and he wouldn't have been much use at nuclear weapon design if he didn't accept E=mc2. --[[User:SamCoulter|SamCoulter]] 02:41, 2 April 2012 (EDT)

::Aschlafly, you have a tendency to make up claims (''As a general claim of equivalence between mass, energy and the speed of light, it was widely rejected at the time by the leading 20th century physicists, including Niels Bohr. '', ''Undoubtedly many other experiments contradict the formula'', and, yes, '' "suddenly" or "at that time" is a nuance of the Greek ἰδού''). And when your bluff is called, you are miffed! [[User:AugustO|AugustO]] 03:00, 2 April 2012 (EDT)
::''Protected "E=mc²": insertion of a fact tag instead of finding and adding a reference.'' That is ridiculous: there is no way of ''finding and adding a reference'' for this made-up "''fact''"!
::It is, however, not very difficult to show that the ''fact'' was invented: just take a look into ''"Foundations of Quantum Physics I''", a book written by Niels Bohr and Jorgen Kalckar. Here Bohr uses what he calls ''Einstein's relation'' without any trepidation! [[User:AugustO|AugustO]] 09:00, 2 April 2012 (EDT)
:::Presumably, then, the relevant text should be changed to something like "it was widely rejected at the time by the leading 20th century physicists, although Niels Bohr later accepted it." and then add the citation. Or you could clarify with something like "the liberal Nobel Prizewinner Niels Bohr".--[[User:CPalmer|CPalmer]] 09:18, 2 April 2012 (EDT)
::::*There is no reason to think that there was a time at which Niels Bohr didn't accept it!
::::*Is there any source which shows that it was ''widely rejected at the time''? Of course, there was the [[Deutsche Physik]], but does this count?
::::*That said: the <nowiki>{{fact}}</nowiki> tag was absolutely appropriate.
::::[[User:AugustO|AugustO]] 09:44, 2 April 2012 (EDT)

:::::You make some valid points as the online evidence is remarkably scant, even though the disagreement between Bohr and Einstein is well-known. This may be a (rare) example where the internet is less adequate than books. I did add an explanatory footnote and the protection to the page should be expiring soon, if not already.--[[User:Aschlafly|Andy Schlafly]] 10:22, 2 April 2012 (EDT)

*Einstein disagreed with Bohr regarding quantum mechanics. Could you provide a source that Bohr disagreed with Einstein on the theory of relativity? I can't find one!
*As I said, the <nowiki>{{fact}}</nowiki> tag was absolutely appropriate, and I'll reinsert it, as I don't think that there are any sources to back-up your claim.
*Furthermore, I have difficulties to believe that Lord Rutherford had problems with ''E=mc²'', he seemed to appreciate the liquid-drop-model of Gamov, Bohr, et al.
*''a general claim of equivalence between mass, energy and the speed of light'': no one claims that the '''three''' are equivalent!
[[User:AugustO|AugustO]] 11:22, 2 April 2012 (EDT)

== First sentence ==

I've changed the introduction to something a bit more encyclopaedic. Please don't revert without discussing it first. Thanks. --[[User:SamCoulter|SamCoulter]] 16:28, 2 April 2012 (EDT)

== Political Pressure ==

''Political pressure has since made it impossible for anyone pursuing an academic career in science to even question the validity of this nonsensical equation''

More likely the fact that similar experiments as the one Cockcroft and Walton are performed by undergraduates in each department teaching physics around the world! [[User:AugustO|AugustO]] 02:30, 3 April 2012 (EDT)

:No, that would not explain why it "is impossible for anyone pursuing an academic career in science to even question the validity of" E=mc2. Even if you think the formula is somehow true, surely you do not deny the political pressure in academia against anyone who might consider questioning it.--[[User:Aschlafly|Andy Schlafly]] 10:37, 3 April 2012 (EDT)
::It's entirely possible for someone who questions the validity of E=mc2 to pursue a career in science; scientists are encouraged to question the validity ''everything''. However if they ''deny'' the validity of E=mc2 then a scientific career is indeed off-limits to them, for the same reason as it's off-limits to someone who denies that 1+1=2. The fact is, E=mc2. It's been verified time and time again. --[[User:SamCoulter|SamCoulter]] 18:44, 3 April 2012 (EDT)

To talk about political pressure in this context is ridiculous. The conversion of Mass to Energy and vice versa and the validity of E=mc2 has been demonstrated experimentally so often(an early example is given in the main page) that to deny that the equation describes observed nature flies in the face of observation and is thus unscientific. To question its validity without hard experimental evidence or a sound theoretical argument (neither of which has been demonstrated) would simply be a matter of scientific (in)competance.[[User:Jloveday|Jloveday]] 15:16, 3 April 2012 (EDT)

:*Aschlafly, if you argue against ''E=mc²'' out of a position of (willful) ignorance, you won't be taken seriously. Unfortunately this is what you are doing, as your (non-) answer [[Talk:E=mc²#A few questions for Aschlafly regarding the experiment of Cockroft and Walton|above]] is showing.
:*Criticism of ''E=mc²'' on ideological grounds just doesn't work, as the adherents of the [[Deutsche Physik]] found out in the early 1940s.
:*But obviously, the theory is under constant discussion, as is the concept of energy or mass.
:[[User:AugustO|AugustO]] 18:34, 3 April 2012 (EDT)

== Matter-light relationship ==

Mr. Schafly, I think you are misunderstanding the nature of the <math>E=mc^2</math> relationship. To illustrate, I will give an example.

Suppose we have a map where 1 inch of distance on the map corresponds to 5 miles actual distance. If points A and B are located 2.5 inches apart on the map, we can compute the actual distance between them as follows:
:<math>2.5 \textrm{ map\,in} \cdot \frac{5 \textrm{ mi}}{\textrm{map\,in}} = 12.5 \textrm{ mi}</math>
In general, if the map distance between two points is <math>d</math> and the actual distance between the points is <math>D</math>, then the following formula is satisfied:
:<math>D = dc</math>
where <math>c</math> is the conversion factor <math>\frac{5 \textrm{ mi}}{\textrm{map\,in}}</math>. The equation above does not relate distance to five or map distance to quintessence. Rather, it posits a direct relationship (or equivalence) between the map distance and the actual distance, related by a conversion factor.

Likewise, <math>E=mc^2</math> posits a direct relationship between mass and energy. It does not relate mass to the speed of light (or light itself), nor does the equation related light to energy. Rather, <math>c^2</math> is a conversion factor, just like the <math>c</math> was in our equation for computing actual distances from map distances. I hope this helps explain why some editors have concern with your statement of the relationship posited by <math>E=mc^2</math>. [[User:GregG|GregG]] 00:19, 4 April 2012 (EDT)

:But Energy and mass have known meanings in other contexts, unlike the distances (in inches) on the map page in your example. If Energy or mass were being redefined by E=mc2, then I think your analogy would work. But people are not defending E=mc2 by saying it entails a redefinition of Energy or mass.--[[User:Aschlafly|Andy Schlafly]] 01:00, 4 April 2012 (EDT)
::The equation postulates how mass and energy can be interchanged while conserving the total amount of mass energy. For example, according to the equation, a nuclear reaction that causes 1.0 kg of mass to be lost will produce 9.0 x 1016 J energy. The amount of energy produced ''by the loss of mass'' is proportional to the mass lost. It is the same sort of equivalence between the number of pounds you get at a currency exchange and the number of dollars you pay (which, come to think of it, is probably an even better analogy). [[User:GregG|GregG]] 01:13, 4 April 2012 (EDT)
:::Energy and mass have known meanings in THIS context! The equation tells us how much energy will be liberated by losing a set amount of mass, or how much energy (for example hard gamma rays) is required to create a set amount of mass. It is a valid equation. It doesn't matter ''what'' objections anyone has to it based on principle or logic; it's been tested and it's correct. This is getting pretty frustrating. --[[User:SamCoulter|SamCoulter]] 01:56, 4 April 2012 (EDT)

Perhaps we should have two articles [[E=mc² (science)]] and [[E=mc² (new age)]]: every sentence Aschlafly writes on this subjects shows that he knows so very little about the science involved - and has no interest to get informed any further. Instead his methods reminds me of homeopaths and other quacks advertising their craft by misrepresenting sources, cherry-picking evidence and generally repeating false statements over and over again despite of better knowledge. [[User:AugustO|AugustO]] 02:05, 4 April 2012 (EDT)
:There are other conservative wikis you can post your work on, you know... --[[User:SamCoulter|SamCoulter]] 02:11, 4 April 2012 (EDT)

===A question===

Mr Schlafly, you've said that this equation "purports" to describe the equivalence of matter and energy. The fact is, it's been repeatedly tested and it ''does'' describe the equivalence of matter and energy. However I get the feeling that there's some misunderstanding here. What, exactly, is your objection to E=mc2? Do you think it's incorrect - in which case go check the experimental data - or do you think it's being used to advance some sort of political agenda? I think we've reached a deadlock here and to make any progress on improving the article it would be helpful to know what you think is wrong with the equation. --[[User:SamCoulter|SamCoulter]] 02:02, 4 April 2012 (EDT)

Talk:E=mc²

2012-04-04T06:02:10Z

SamCoulter: /* Matter-light relationship */

==I'm Finding This a Little Hard to Understand==
First off, E = mc2 describing a relationship between energy and matter is only one corollary. It is also part of a well known problem in chemistry... Or is isotopic mass not less than the sum of it's parts? The equation itself HAS been derived from the Theory of Relativity, and is a direct consequence of the energy momentum four vector for an object with 0-momentum. The quote you provide from the paper states that the theory is not enough for a rigorous PROOF, but it never tries to deny the derivability of the equation. Derivation and proof are two entirely different things.

==This Article Could Use Sources or Better Explanation==
Wow. Classic Andy. Unsourced statements supposedly contradicting well-established theories of physics. No real proof other than "the Bible says it's not true," even though this is an extremely uncommon interpretation Genesis. --[[User:AndreaM|AndreaM]] 01:06, 25 March 2012 (EDT)

:It's a start for now, and will expand over time. That's how wikis work.--[[User:Aschlafly|Andy Schlafly]] 01:18, 25 March 2012 (EDT)
::Doesn't it relate energy to mass? The speed of light is just a constant here. [[User:IanR|IanR]] 02:22, 25 March 2012 (EDT)

== Humbug ==

The phrase ''meaningless, almost nonsensical, statement '' (as used in the article) fits the first paragraph to a t.

Aschlafly, please try to refute the explanation of the experiments of John Cockroft and Ernest Walton, which is accepted generally under physicists. And try to give some sources - or if not, some of your own calculations!

If not, just erase the first section.

[[User:AugustO|AugustO]] 11:23, 25 March 2012 (EDT)

== Nobel Lecture ==

I took out the link to the Nobel lecture, it can be found in the short summary. But be aware that John Cockroft is using the dreaded formula with ease (but without stating so explicitly - why should he, it's already generally accepted!) An astute reader, who not only searches for the formula finds e.g., the formulation:

:'''This energy could be provided by a diminution of mass of 0.0184 mass units.'''

Indeed, these are the ≈ 17MeV!
[[User:AugustO|AugustO]] 11:51, 25 March 2012 (EDT)

==Irrelevant claims==
Are these claims of so called "experimental verification" valid or useful? If you look at enough so-called science you can find people claiming anything. --[[User:DavidEdwards|DavidEdwards]] 12:59, 25 March 2012 (EDT)
:''you can find people claiming anything'' Indeed - and that's why there is a difference between the unsubstantiated claims in the first section, and the actual experiments in the following paragraphs. If you have a good explanation of the outcome of these experiments (some math would be nice), feel free to add your personal ''claim''.
:[[User:AugustO|AugustO]] 13:03, 25 March 2012 (EDT)
::Why do you feel that I need to do that? I understand that you may wish to believe relativity is true, but that is no reason to impose your personal beliefs on others.--[[User:DavidEdwards|DavidEdwards]] 13:40, 25 March 2012 (EDT)
:::Thinking that all claims have the same validity seems not a very conservative position. I don't expect you to accept my personal beliefs, but there is a tendency in physics that the claims which are backed up by those willing to do the experiments and the maths have a greater following than random insights. [[User:AugustO|AugustO]] 13:47, 25 March 2012 (EDT)
::::I don't understand why your personal beliefs are even included in the article.--[[User:DavidEdwards|DavidEdwards]] 13:58, 25 March 2012 (EDT)
:::::*Because they are bolstered by experiments...
:::::*...and they aren't just my beliefs - in fact it will be very hard to find a physicist who doesn't share them. And that's something which shouldn't be easy to ignore in an article on a physical subject.
:::::[[User:AugustO|AugustO]] 14:02, 25 March 2012 (EDT)
::::::If science is your religion then you will find scientists who share your views. I still don't see why they should be hosted here. The introduction makes the Biblical position clear.--[[User:DavidEdwards|DavidEdwards]] 14:07, 25 March 2012 (EDT)
:::::::Religion is my religion, science is my hobby. And just because there is one single interpretation of a few verses of Genesis out there which you think to contradict the experiments of the physicists doesn't shatter my religious beliefs nor my trust in physics. [[User:AugustO|AugustO]] 14:35, 25 March 2012 (EDT)
::::::::Then why do you insist with this anti-religious pseudoscience?--[[User:DavidEdwards|DavidEdwards]] 14:41, 25 March 2012 (EDT)
← Now you have intrigued me: what's your definition of pseudoscience? [[User:AugustO|AugustO]] 14:45, 25 March 2012 (EDT)

Pssst! DavidEdwards! You're trying waaaaay too hard. --[[User:JoshuaB|JoshuaB]] 21:20, 25 March 2012 (EDT)
:Too hard about what?
:As far as the pseudoscience question is concerned - "science" which is used to promote a worldview which has no basis in moral reality is pseudoscience. Science which is designed to suggest that morality is relative clearly falls into this category.--[[User:DavidEdwards|DavidEdwards]] 18:40, 26 March 2012 (EDT)

==Question==
This snipet of sentence appears in the introduction: "...''a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory.''" Let's compare that to the entire sentence it was lifted from: "'''''Leaving aside that it continues to be affirmed experimentally,''' a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory.''" One can't help but notice that the part of the sentence that states that the theory has been observed to be valid in real world experimentation, has been surgically removed. Why is this? Is it because it stands in contradiction to the claim the lead author of this article is trying to promulgate? --[[User:JoshuaB|JoshuaB]] 20:55, 25 March 2012 (EDT)

:Peer-reviewed journals won't publish a criticism of relativity. That's obvious. Although I don't have a copy of the full paper, I doubt it attempts to fully support the [[hearsay]] that was excluded, and I would not be surprised if it was included simply to safeguard against complaints for what followed. It adds nothing to the basic point that follows and is quoted here.--[[User:Aschlafly|Andy Schlafly]] 21:19, 25 March 2012 (EDT)

::Why won't a peer-reviewed journal publish a criticism of SR or GR? Liberal conspiracy? Also, do you not accept that mass and energy are interchangeable or is it a problem with this specific equation? --[[User:JoshuaB|JoshuaB]] 21:24, 25 March 2012 (EDT)

:::JoshuaB, do you accept the possibility that the [[Theory of Relativity]] may be false, and would you approve a well-written paper that criticized it? It's a simple "yes" or "no" question.--[[User:Aschlafly|Andy Schlafly]] 21:55, 25 March 2012 (EDT)

::::Yes. We already know the Theory of Relativity is an incomplete model of our universe. So yes, the theory may be "false", but the one that takes it's place will most likely have many of the same properties. Secondly, would I approve of a "well-written paper that criticized it"? I don't know what that means. I'm not a physicist, so I don't see what difference my "approval" of said paper would make. Now that I've been so kind as to answer your questions, would you return the courtesy and answer the ones I posted above? --[[User:JoshuaB|JoshuaB]] 22:35, 25 March 2012 (EDT)

:::::The qualifications on your answer render it almost meaningless. I'm not asking whether your approval of a paper would make a difference, or your opinion about whether you think the replacement of the [[Theory of Relativity]] will "most likely" be another theory of relativity. The question was simple and straightforward, referring to a paper critical of the theory of relativity without any appeasement to those who insist on believing in it. An unqualified answer is requested.

:::::Also, did you ever answer my simple question on [[Talk:Main Page]] about how much time you've spent reading the [[Bible]] this month?--[[User:Aschlafly|Andy Schlafly]] 22:50, 25 March 2012 (EDT)

::::::Come off it Schlafly. This article is not about my Bible reading, is it? No. Does my opinion of the publishing criteria of physics academia have any bearing on the assertions you are trying make? No. Again: Do you not accept that mass and energy are interchangeable or is it a problem with this specific equation? --[[User:JoshuaB|JoshuaB]] 23:11, 25 March 2012 (EDT)

:::Andy, do you accept the possibility that the Theory of Relativity may be correct, and would you approve a well-written paper or book that supported it? It's a simple "yes" or "no" question. --[[User:FrederickT3|FrederickT3]] 03:28, 26 March 2012 (EDT)

== Some points ==

*''Misplaced claims of experimental verification'': if you want to put on the disclaimer ''misplaced'', please explain the results of the experiments in another way.
*''Why won't a peer-reviewed journal publish a criticism of SR or GR?'' But they do: remember the neutrino thing? Or the papers of H. Ives? In fact the first event has shown that especially the publication of experiments (seemingly) violating currently accepted theories gets attention!
*Taking only the second half of ''"Leaving aside that it continues to be affirmed experimentally, a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory."'' makes you looking deceptive. Take the whole sentence and try to explain the motivation of the first half. Otherwise anyone who looks the quote up will suspect an ulterior motive!
*The whole first section is a train wreck.
*''[[Mass]] is a measure of an object's inertia, and is directly related to the forces of [[gravity]].'' Only when you accept the general theory of relativity it is, otherwise inertial mass and gravitational mass are quite different animals.
[[User:AugustO|AugustO]] 02:46, 26 March 2012 (EDT)

::I have attempted to clarify the last point on the [[Mass]] page, and also removed the fact template from the first paragraph, since the explanation is given later on. As it stood, the "citation needed" banners following important points tended to undercut the authority of the article.--[[User:CPalmer|CPalmer]] 08:29, 26 March 2012 (EDT)
::The problem is not a confusion of weight and mass, but the conflation of gravitational and inertial mass. In the classical theory, there is no reason why both should be the same, it's just an experimental fact.
::So, I'm sorry, your new entry didn't help.
::[[User:AugustO|AugustO]] 08:40, 26 March 2012 (EDT)

:::But they always are the same, aren't they? I don't see why knowing or not knowing the reason (yet) has any bearing on the question.--[[User:CPalmer|CPalmer]] 08:43, 26 March 2012 (EDT)

::::Aschlafly writes: ''Mass is a measure of an object's inertia, and is directly related to the forces of gravity. In contrast, the intrinsic energy of an object (such as an atom) is a function of electrostatic charge and other non-inertial forces, having nothing to do with gravity.''
::::E=mc² isn't about gravity, to invoke it here is a deflection. [[User:AugustO|AugustO]] 08:49, 26 March 2012 (EDT)

::::: OK. But bear in mind that this page clearly exists to provide a counterweight to certain liberal views. To do that, clarity of message is needed, and a "citation needed" banner has a deflating effect on the strength of that clarity. So perhaps you could suggest a wording that might be acceptable without the "citation needed" bit?--[[User:CPalmer|CPalmer]] 09:03, 26 March 2012 (EDT)

No, I can't. Frankly, I don't see the clarity in this piece: at the moment, it is still sadly missing. So I hope, that Aschlafly taking care of the fact-tags (other then trimming them away) will add to this clarity! [[User:AugustO|AugustO]] 09:13, 26 March 2012 (EDT)

== Examples of how meaningless E=mc² is: descriptions for the layman ==

Try to explain a complicated formula in 1-2min, then have a single sentence of this soundbit taken out. You can bet that this may sound meaningless. That's no fault of the formula. I'll change the title back. [[User:AugustO|AugustO]] 09:58, 26 March 2012 (EDT)

:The quotes (and others that could be added) illustrate how meaningless the formula is.--[[User:Aschlafly|Andy Schlafly]] 10:02, 26 March 2012 (EDT)
::The quotes illustrate how difficult it is to explain the concept to a layman. Take a look [http://www.pbs.org/wgbh/nova/einstein/expe-text.html here], where you can find the quotes in context. [[User:AugustO|AugustO]] 10:16, 26 March 2012 (EDT)

:::The quotes were solicited to describe the meaning of the equation to laymen, not to illustrate how difficult that is. The difficulty arises from the meaningless nature of the equation.--[[User:Aschlafly|Andy Schlafly]] 11:01, 26 March 2012 (EDT)
::::Actually the meaning of the equation is very clear: the total energy contained in matter is its mass multiplied by the speed of light in a vaccum squared. Experiment after experiment, and nuclear reactor after nuclear reactor, has clearly demonstrated that the total energy released by a reaction is the lost mass multiplied by c2. Therefore whether the theories of relativity are true or not, E=mc2 is true. Equally, even if classical Newtonian mechanics was false, the kinetic energy of a moving mass would still be accurately described by Ek=1/2mv2. --[[User:SamCoulter|SamCoulter]] 16:34, 28 March 2012 (EDT)
::::Indeed. Internet quotes are really not very useful. A skilled researcher can always find someone saying something to justify their position however bizarre or immoral. This is a typical weakness (and response!) of those who have no real moral or religious basis for their convictions. --[[User:DavidEdwards|DavidEdwards]] 19:04, 26 March 2012 (EDT)
::::These quotes are absolutely meaningless. It looks like you took random sentences from the PBS article and then inserted them into the article as if they had any real significance. This is made even more moot when you consider the fact that the article claims that "Ten top physicists were asked to describe in laymen's terms E=mc²" and then you go on to quote three. Not to mention, most of the quotes aren't actually explaining what the equation means - a basic understanding of algebra and what the symbols mean is sufficient to understand its basic meaning - but rather what it entails, its implications. Tim Halpin-Healy's quote I think is better than taking some random sentences and then implying that they mean that physicists don't know what E=mc² means. --[[User:Tyg13|Tyg13]] 15:58, 1 April 2012 (EDT)

:::::The problem is that '''E=m2does not meaning anythimg that makes sense. Anyone is welcome to try to explain it here. Eating a pound of cake does not cause one's energy to increase by the speed of light squared.--[[User:Aschlafly|Andy Schlafly]] 16:06, 1 April 2012 (EDT)
::::::No, it doesn't. It causes your energy to increase by a number of foot-pounds equal to '''one pound''' times the speed of light squared. I've explained this to you already and it isn't difficult. --[[User:SamCoulter|SamCoulter]] 16:23, 1 April 2012 (EDT)
:At any rate, eating a pound of cake, is not nuclear physics, it is chemistry, where your cells digest and utilize the sugars within. Protiens are also converted into sugar.[[User:JonM|JonM]] 18:28, 1 April 2012 (EDT)

== Aschlafly, could you give us... ==

... your interpretation of the results of the experiment by Cockroft and Walton? Cockroft describes in his Nobel Lecture how the kinetic energy of the alpha-particles could be provided by ''diminution of mass of 0.0184 mass
units.'' (p. 170). Please take into account that this isn't about energy in form of electromagnetic waves!

If you don't address the results of the actual experiments, all your claims are just meaningless verbiage.
[[User:AugustO|AugustO]] 10:39, 26 March 2012 (EDT)

:Cockcroft (please spell his name correctly) does not even cite E=mc2 in his Nobel lecture.--[[User:Aschlafly|Andy Schlafly]] 11:01, 26 March 2012 (EDT)
::You don't think that it is ''implied'' by the quote that AugustO provided? --[[User:FrederickT3|FrederickT3]] 11:10, 26 March 2012 (EDT)

:::No, I don't. E=mc2 is supposedly a general truth of universal applicability. The case for it, if true, needs to be far stronger than what is quoted above.--[[User:Aschlafly|Andy Schlafly]] 11:15, 26 March 2012 (EDT)

From the lecture: ''It was obvious then that lithium was being disintegrated into two α-particles with a total energy release of 17.2 million volts. This energy could be provided by a diminution of mass of 0.0184 mass
units.''

Aschlafly, your ignorance is showing:
17.2 MeV /c² = 1.602*10-19kg m²/s² *17.2 *109/(3*108 m/s)² = 3.0616 * 10-29kg = 0.0184 amu

In fact as this is such a ''general truth of universal applicability'', J. Cockroft could take it for granted that his scientifically literate audience would be able to make this calculation.
[[User:AugustO|AugustO]] 11:26, 26 March 2012 (EDT)

:::One question, though: We have four protons and four neutrons on the left hand side of the equation, and four protons and four neutrons on the right hand side. So why the difference in mass?
:::Also, forgive my ignorance, but why is the 'energy' measured in volts? Volts are not a measure of energy.--[[User:CPalmer|CPalmer]] 11:40, 26 March 2012 (EDT)

*Bainbridge measured the mass of 7Li directly, using mass spectrometry.
*Indeed, three protons and four neutrons weight less than a 7Li - kernel
*Energy is measured in this cases in [[Electron-Volts]]. One electron volt is the energy of an electron which passed through a potential of 1 Volt.
[[User:AugustO|AugustO]] 11:54, 26 March 2012 (EDT)
:AugustO, please contribute something substantive instead of talking up a storm. Thanks.--[[User:JamesWilson|James Wilson]] 11:56, 26 March 2012 (EDT)
:::James Wilson, please don't interfere in interesting and substantive discussions. Thank you! [[User:Baobab|Baobab]] 12:12, 26 March 2012 (EDT)
::::"Baobab", please state what substance is coming out of this conversation. You have had a history of engaging in hefty talk. Please start contributing. I have had some great insights contributing in a few articles today and will continue to do so. Many thanks for your future contributions.--[[User:JamesWilson|James Wilson]] 12:47, 26 March 2012 (EDT)
:::::"James Wilson", AugustO is clarifying things and giving us some great insights, as CPalmer's latest reply shows. Discussions will often lead to better articles, which is why your interference was totally uncalled for. I guess your only motive was to defend Mr. Schlafly, but he can take care of himself and really doesn't need your help. Regards, [[User:Baobab|Baobab]] 13:30, 26 March 2012 (EDT)
::Thanks, AugustO. Relativity or no relativity, I am learning a lot from this discussion.--[[User:CPalmer|CPalmer]] 12:00, 26 March 2012 (EDT)
:::You are posing excellent questions! Indeed it should be of interest for Aschlafly, too:
:::'''Aschlafly, two protons (1.0073amu) and two neutrons (1.0087amu) have a combined mass of 4.0320 amu. An alpha-particle - existing from two protons and two neutrons - has a mass of 4.0015 amu. How do you explain this diminution of mass?
:::[[User:AugustO|AugustO]] 13:42, 26 March 2012 (EDT)
::::What real evidence do you have that these particles even exist? No doubt you've read it in a book or some "qualified person" has said it is true. In reality you accept these things on the word of somebody else - in other words your belief in the existence of these particles is a matter of scientific faith in something which you have no personal knowledge. There is obviously no problem with believing things on faith, but please don't pretend it's "true because science says it's true". Christians get their real truth from a higher authority.--[[User:DavidEdwards|DavidEdwards]] 18:49, 26 March 2012 (EDT)
:::::I find Mr O's position to be rather odd. He insists that Mr Schlafly - and only Mr Schlafly answers his questions. Yet at the same time Mr O steadfastly ignores comments specifically directed at him.--[[User:DavidEdwards|DavidEdwards]] 16:11, 28 March 2012 (EDT)
::::::If you're referring to your question about how he knows that protons and neutrons really exist, I suspect he thought it wasn't worth answering. I tend to agree. --[[User:SamCoulter|SamCoulter]] 16:15, 28 March 2012 (EDT)

@DavidEdwards: Sorry, [[User:DavidEdwards|DavidEdwards]], I didn't want to ignore you. I hadn't caught up after the databank mishap, I'm afraid.
So, to answer your questions: At school, we performed a couple experiments -there were teltron tubes, the Millikan the photo-electric effect, the Millikan Oil Drop experiment, de Broglie's electron diffraction experiments, etc. These experiments confirmed my persuasion that the electrons, protons and neutrons are physically real entities. The proposed theories explained these effects - and sitting in front of a computer, I'm surprised that you aren't willing to accept the theories behind semi-conductors. [[User:AugustO|AugustO]] 16:25, 28 March 2012 (EDT)
@SamCoulter: There is some truth in your statement, too: it's like asking a priest: ''let's talk about your religion without mentioning Jesus''... [[User:AugustO|AugustO]] 16:28, 28 March 2012 (EDT)

== Restoration ==

I could restore this page to the last version which I had edited. I don't know whether there were more entries. This should help to restore the article: perhaps one positive effect could be that Aschlafly marvels about the questions in the previous section for a while and rethinks his position! [[User:AugustO|AugustO]] 18:36, 26 March 2012 (EDT)

== Instead of the source - tag ==

*''E=mc² is a meaningless, almost nonsensical, statement in physics that purports to relate all matter to light.''
It relates matter to energy, the square of the speed of light is just the conversation factor
*''In fact, no theory has successfully unified the laws governing mass (i.e., gravity) with the laws governing light (i.e., electromagnetism).''
It isn't about gravitational mass, but about inertial mass. To identify both means to invoke the General Theory of Relativity
* ''Simply put, E=mc² is liberal claptrap. ''
How so? It works!
* ''Biblical Scientific Foreknowledge predicts that a unified theory of all the laws of physics is impossible, because light and matter were created at different times, in different ways, as described in the Book of Genesis.''
So, physicists should just give up looking for it? I dare to say that there are many Christian physicists - they may just not follow your special interpretation of Genesis!
[[User:AugustO|AugustO]] 09:29, 27 March 2012 (EDT)

== A few questions for Aschlafly regarding the experiment of Cockroft and Walton ==

I'd appreciate an answer by Aschlafly (and him alone) to the following questions:

'''1.''' Do you accept that the mass of the Lithium-kernel (7Li), of alpha-particles (4He) and of protons (1H) can be measured fairly accurately, as these are charged particles?

'''2.''' Do you accept the measurements for the mass of the particles as used by Cockroft and Walton, i.e.
:::{|
!particle
!mass
|-
|1H||1.0072 amu
|-
|4He||4.0011 amu
|-
|7Li||7.0130 amu
|}
If not, which values do you think to be right?

'''3.''' Do you agree that before the reaction the mass of the particles involved was 8.0202 amu?

'''4.''' Do you agree that after the reaction the mass of the particles involved is 8.00220 amu?

'''5.''' Do you agree that there is a mass decrease of 0.0180 amu?

'''6.''' Before the experiment, the Li was at rest and the proton had a kinetic energy of less than 1MeV. Do you accept these values?

'''7.''' After the experiment, a pair of alpha-particles was observed, both having an kinetic energy of 8.6MeV. Do you think that this value is correct?

'''8.''' Can you tell me where the mass went? Can you tell me where the energy came from?

'''9.''' If your answer to question 8. is ''no'' in both accounts, than my answer is that there is a theory which explains the conversion of mass to energy, even if you don't like it!

As this theory works for this experiment, and for all the other fissions and fusions, it isn't liberal claptrap, but a meaningful theory. And you can't blame physicists for using it! Of course, you can blame journalist to abuse the formula - but this isn't the result of ''liberal physics'', but of ''bad reporting'', as an abuse of the dictum ''1+1=2'' doesn't reflect badly on number-theorists, but only on the person misattributing it.

Thanks, [[User:AugustO|AugustO]] 08:04, 28 March 2012 (EDT)

:AugustO, chemical reactions can release energy, typically based not on the size of their mass but on the electrostatic energy prior to the reaction. Cockcroft's own paper accepting the Nobel Prize does not claim that his work proved that '''''E=mc2'''''. Undoubtedly many other experiments contradict the formula, or else we'd have seen far more claims of experimental verification of it.--[[User:Aschlafly|Andy Schlafly]] 11:20, 31 March 2012 (EDT)

Aschlafly, you haven't answered any of the questions above! Instead you are talking about something completely different:
*We are not talking about a ''chemical'' reaction! You should know the difference.
*Cockroft claims that the energy comes from the loss of mass - and he calculates it according to ''E=mc²''. Please read (and understand!) his lecture.
*Please give a list of a few (or at least a single) experiment which contradicts the formula. This should be easy, as you stated that ''Undoubtedly many other experiments contradict the formula''. Oh, wait, you made that up...
*Please answer the questions 1 to 9: all the question are covered in Cockroft's lecture, so I'd be interested in your explanation!
[[User:AugustO|AugustO]] 11:32, 31 March 2012 (EDT)
:AugustO, if you cannot even spell Cockcroft's name properly, how can Andy take anything you say seriously? --[[User:AndreaM|AndreaM]] 22:03, 31 March 2012 (EDT)

== Move ==

Could you please move this article to [[Essay:E=mc²]]? Then I could ignore all the misleading and outright wrong statements in the first section! Thanks, [[User:AugustO|AugustO]] 15:57, 28 March 2012 (EDT)

== Experimental Facts ==

Aschlafly, on the one hand side, you state that ''no experiment distinguishes between "gravitational" and "inertial" mass'' - and that seems good enough for you. On the other hand side, you have a problem with the statement that E=mc² ''continues to be affirmed experimentally''. Do you spot the inconsistency? Indeed, I could write: ''the equivalence between inertial mass and gravitational mass has never been mathematically derived from first principles in classical mechanics, indeed, a rigorous proof of this equivalence is probably beyond the purview of classical theory.''

BTW, omitting the first part of the sentence ''"Leaving aside that it continues to be affirmed experimentally..."'' makes you look very disingenuous (even if you have good motives) to anyone who looks up the link to the abstract!

[[User:AugustO|AugustO]] 16:07, 28 March 2012 (EDT)

:It's hair-splitting jargon of doubtful significance. 99% of people know what mass is, and it's directly related to weight, not electrostatic energy.--[[User:Aschlafly|Andy Schlafly]] 16:38, 28 March 2012 (EDT)
::And the remaining percent are the physicists which draw such distinctions with good reason! [[User:AugustO|AugustO]]
:::Even more confusing is that the article states mass is a measure of inertia. Inertia is resistance to acceleration, and that has nothing to do with gravity at all. The article as it stands is simply inaccurate. --[[User:SamCoulter|SamCoulter]] 16:51, 28 March 2012 (EDT)

::::Aschlafly: ''....may not even have any justification in the paper''
::::Aschlafly, havn't you read the paper? Here is a part of the conclusion:
:::::''Einstein produced about 18 virtuoso derivations and demonstrations all aimed at establishing the mass-energy principle. We have shown that although each of them gave evidence for the applicability of E0 = mc² to a particular set of circumstances, no one derivation, or collection of them taken together, succeeded in providing a definitive proof of its complete generality. That should not be surprising because the same situation occurs, for example, with F = ma, which is a different kind of relation than E0 = mc². Even so, 300 years of successful theoretical work have not proven the correctness of F = ma. Indeed, relativity showed that this expression, one of the bedrocks of classical mechanics, holds only approximately.
::::Here is another excerpt, on mass, electromagnetism etc:
:::::''In the 19th century, a number of European physicists, including the leading theoretician of the time, Hendrik Lorentz, were working to establish that mass was, in whole or in part, electromagnetic. There were primarily two competing theories, one by Lorentz, the other by Max Abraham. Both agreed that depending on the relative direction of its velocity and acceleration, an “electron” a generic charged particle moving through the aether could manifest both transverse and longitudinal speed-dependent mass components. There was even experimental evidence that seemed to confirm as much. Electromagnetic theory was then at the center of physics.''
::::[[User:AugustO|AugustO]] 16:56, 28 March 2012 (EDT)

::::(May I add that I think one shouldn't make such fundamental statements as ''E=mc² has no meaning'', if one only skims a few abstracts! [[User:AugustO|AugustO]])

Aschlafly, maybe you have not the time (or the access) to read the actual papers - as you should when drawing conclusions. But perhaps you can take a look at [http://www.lbl.gov/abc/Basic.html Lawrence Berkeley National Laboratory's ABC of Nuclear Science] to refresh the basics?Even there, they use ''Einstein's famous equation...''... [[User:AugustO|AugustO]] 08:44, 29 March 2012 (EDT)

== ...purports to relate all matter to light ==

When I write that for iron I get:
::V [cm³] * 7.874 g/cm³ = M [g]
I don't relate the mass to 7.8474, but to the volume. So, similarly Einstein's equations says that mass is proportional to energy, not light. [[User:AugustO|AugustO]] 10:38, 29 March 2012 (EDT)
:But the constant applied in this case is the (square of the) speed of light! Are you saying that that is a coincidence? If so, why not just say "E=mc"?--[[User:CPalmer|CPalmer]] 10:57, 29 March 2012 (EDT)
::no, of course not, but we could write, e.g., Eε0 = m/μ0: the relationship is given between mass and energy... [[User:AugustO|AugustO]] 11:04, 29 March 2012 (EDT)
:::But the relationship itself is somehow connected to light. Or maybe, the relationship is connected with some third factor that also determines the speed of light.--[[User:CPalmer|CPalmer]] 11:58, 29 March 2012 (EDT)
::::yes, but the c² is a constant. Does the equation E/c²=m relate all energy to light? [[User:AugustO|AugustO]] 12:18, 29 March 2012 (EDT)
:::::Yes - the equation in any form relates mass, energy, and the speed of light. I think the article doesn't emphasise the light-energy relationship because it's the mass-energy relationship that appears absurd once the theory of relativity is discounted.--[[User:CPalmer|CPalmer]] 12:22, 29 March 2012 (EDT)

Even if you discount the theory of relativity, the experimental facts remain: in experiments where mass is deleted or created, this happens with the release or absorption of energy. And this energy is given by ≈8.99*1016m²/s² times the mass... [[User:AugustO|AugustO]] 13:31, 29 March 2012 (EDT)

== Misleading footnote ==

::(Your footnote about the units is bogus. SI units are not arbitrary, since eg Joules can be derived from other SI units including kilograms, metres and seconds. Therefore, the relationship to light ''is'' (purported to be) a natural one.)--[[User:CPalmer|CPalmer]] 11:00, 29 March 2012 (EDT)

Which footnote about units? [[User:AugustO|AugustO]] 11:04, 29 March 2012 (EDT)

Ah, I see, no, not ''my'' footnote. The text was inserted by [[User:GregG/RSS_6#Mon.2C_26_Mar_2012_18:05:11_GMT_.28edit_by_MihailD.29_2|MihailD]], and obviously the equation holds in other systems, too. [[User:AugustO|AugustO]] 11:10, 29 March 2012 (EDT)

I took out the main part of the footnote: it should be obvious that in a physical equation only compatible physical units can be used, and that otherwise conversion factors have to be introduced. But there is no problem, if we have c in feet/h, m in pounds, and E in pound*feet²/h²
[[User:AugustO|AugustO]] 11:30, 29 March 2012 (EDT)

:I see - my apologies. I thought you had added the footnote in order to try and make the point above. I agree that in any sensible unit system the equation will work (assuming the theory is right of course).--[[User:CPalmer|CPalmer]] 11:32, 29 March 2012 (EDT)

:Looks like [[User:MihailD|MihailD]] received a lifetime block for this and related edits, so he'll be unable to explain or justify his comments. --[[User:JasperK|JasperK]] 08:58, 30 March 2012 (EDT)

::That's a pity! [[User:AugustO|AugustO]] 09:38, 30 March 2012 (EDT)

== We will, we will, we will ==

Generally I enjoy the great contribution of SamHB. My only rub: the ''royal we'' - ''we will dispel'', ''we will show'', ''we don't do''. I don't think that this is the best way to phrase an encyclopedic article, and I'd like to see alternatives. For the moments, I just commented out some of the occurrences which in my opinion spoiled the fun of reading the article....

[[User:AugustO|AugustO]] 09:38, 30 March 2012 (EDT)

:It is a bit chatty. The first one could be rephrased "This article sets out to...". I have reworded two of the others, and the rest might possibly be omitted entirely.--[[User:CPalmer|CPalmer]] 09:44, 30 March 2012 (EDT)

== I don't understand... ==

Why you guys destroyed a wonderful original piece of work by Mr. Schlafly. There are hundreds of books and web sites that explain relativity, why did you feel the need to reproduce that content here? --[[User:AlejandroH|AlejandroH]] 16:18, 30 March 2012 (EDT)
:Perhaps because they are right and he is wrong? [[User:AugustO|AugustO]] 16:39, 30 March 2012 (EDT)

::Aschlafly, you still haven't answered my [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|reasonable questions abouts this subject]]. To be ignorant on a subject isn't that big a deal, but to willfully stay ignorant while lecturing about it, that is! [[User:AugustO|AugustO]] 17:32, 30 March 2012 (EDT)

BTW, the ''wonderful original piece of work'' was not destroyed - you find it embedded in the text. A blanket reversion of the work of a couple of editors should be a no-no, please give reasons for reverting at least for each paragraph! And answer the [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|questions!]] [[User:AugustO|AugustO]] 17:42, 30 March 2012 (EDT)

== Protection of the Article ==

Stated reason: ''(with reluctance, and repeated reversions; for now, post specific suggestions for edits on the talk page)''

Aschlafly, this must be one of these definitions of irony, as I asked for specific reasons for your deletions of material. Isn't that censorship? BTW, you still haven't replied to the [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|sections above]], and frankly I'm starting to call your knowledge on this matter in question! Ignorance is not always bliss!

And if you are not willing to address the points made above by various contributors, are you at least willing to read and answer to ''specific suggestions for edits on the talk page''? Or is this a sham to force-feed your view to the readers?

[[User:AugustO|AugustO]] 18:39, 30 March 2012 (EDT)

:The lead focus of the entry was converted into a parade of [[hearsay]] rather than logical analysis. Simply put, the entry had denigrated into the ''antithesis'' of the truth-seeking integrity expected of ''Conservapedia''.--[[User:Aschlafly|Andy Schlafly]] 19:41, 30 March 2012 (EDT)
::And what about the current entry? The fact is that E=mc2 is a perfectly valid equation demonstrating the equivalence of matter and energy and it has been thoroughly verified; the energy a piece of matter contains DOES equal its mass times ''c'' squared. This has been repeatedly demonstrated by experiments, which consistently show that the energy released by a reaction is equal within measuring limits to the overall mass lost. It's perfectly reasonable to reject any claim that this demonstrates the truth of moral relativism, atheism or anything else, but to criticise the equation itself as "meaningless" or "liberal claptrap" demonstrates no truth-seeking or integrity. E=mc2 is no more liberal than d=vt or 1+1=2. --[[User:SamCoulter|SamCoulter]] 19:53, 30 March 2012 (EDT)

:::The entry explains how nonsensical the formula is as a general principle -- and how it has never been derived as a matter of logic or demonstrated in any general, meaningful manner. Reliance on [[hearsay]] is not a serious alternative.--[[User:Aschlafly|Andy Schlafly]] 20:24, 30 March 2012 (EDT)

::::But it ''isn't'' a general principle. It's a mathematical expression of matter-energy equivalence and it's perfectly valid. Whether or not it's ever been derived as a matter of logic or not is irrelevant because it's been repeatedly demonstrated to be true in the most meaningful manner possible: if you turn matter into energy the amount of energy that comes out is always equal to the lost mass times ''c'' squared. --[[User:SamCoulter|SamCoulter]] 20:59, 30 March 2012 (EDT)

:::::You restate the claim as though its repetition would make it true. It doesn't. If someone gains one pound in weight, then it is preposterous for anyone to claim that his energy has thereby increased in proportion to the speed of light squared.--[[User:Aschlafly|Andy Schlafly]] 21:07, 30 March 2012 (EDT)

::::::Yes, it would be absolutely preposterous. In fact his energy would have increased by a number of foot-pounds equal to one pound times ''c''2 in feet per second. --[[User:SamCoulter|SamCoulter]] 21:11, 30 March 2012 (EDT)
:::::::To explain that further, his energy would have increased in proportion to his '''weight''', not to the speed of light. If a person who weighed 150lb gained 1lb the energy contained in their mass would increase from 1.4467x1017 ft lb to 1.4564x1017 ft lb. --[[User:SamCoulter|SamCoulter]] 21:39, 30 March 2012 (EDT)

::::::::The formula '''E=mc2''' does assert that his energy for a fixed gain in weight would increase in proportion to the speed of light squared and, as you say, that is preposterous.--[[User:Aschlafly|Andy Schlafly]] 23:37, 30 March 2012 (EDT)

:::::::::No, his energy for a fixed gain in weight will increase in proportion to his '''weight'''. In my example of a 150lb man gaining 1lb, his new energy content will be 0.6667% higher, '''as will his weight'''. ''c''2 is just a constant. --[[User:SamCoulter|SamCoulter]] 00:52, 31 March 2012 (EDT)
::::::::::Andy seems to imagine that this energy should be immediately available for sports or doing work around the house, and that we should all be superheroes after having eaten a bar of chocolate. This is, of course, not so. The energy is still locked up in the mass, and it would require nuclear or particle reactions to convert even small parts of it into useful forms of energy. --[[User:FrederickT3|FrederickT3]] 03:28, 31 March 2012 (EDT)
''The lead focus of the entry was converted into a parade of [[hearsay]] rather than logical analysis''. Then let's get factual: just answer a [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|few questions]]. Shouldn't be difficult, as you are so insightful. [[User:AugustO|AugustO]] 01:26, 31 March 2012 (EDT)

Of course this is hearsay - and so it should be. Conservapedia is an encyclopedia - a collection of established information cited from other sources. Hearsay may be inappropriate in court, but it is the lifeblood of an encyclopedia. Anything that is not 'hearsay' is personal opinion or original research, and should be reserved for articles prefixed 'Essay:'. --[[User:JasperK|JasperK]] 08:23, 1 April 2012 (EDT)

:Then again, heresy tends to be more reputable when it comes from a professional who has studied the issue for years, instead of a man who doesn't understand how food works. [[User:JackFerner|JackFerner]] 12:23, 2 April 2012 (EDT)

== Bare links ==

I noticed that [http://conservapedia.com/index.php?title=E%3Dmc%C2%B2&diff=971455&oldid=971446 this edit] removed publication information about the references. Personally, I think this information is useful for two reasons: it helps Conservapedia editors locate the references from other sources if (and when) the links go dead, and it helps who print out Conservapedia articles and wish to look up the references offline. (Of course, I'm not suggesting that the URLs be removed, but this could be in addition to the publication information). Of course, there may be perfectly good reasons for removing the publication information of which I am not aware, but I otherwise think that the publication information should be included again (and I plan to do this once the protection expires). [[User:GregG|GregG]] 23:17, 30 March 2012 (EDT)

:Great point. I retrieved and added many of the citations back. If I missed any then I'd be happy to add them also.--[[User:Aschlafly|Andy Schlafly]] 23:37, 30 March 2012 (EDT)

== Niels Bohr ==
Andy, for how often you rail against the Nobel Prize I'm surprised that you would try and use a former winner as an authority to support your misguided assertion. [[User:DennisR|DennisR]] 21:48, 1 April 2012 (EDT)

:Even a broken clock (like the Nobel Prize) gets it right every once in a while!--[[User:Aschlafly|Andy Schlafly]] 22:07, 1 April 2012 (EDT)

::''. As a general claim of equivalence between mass, energy and the speed of light, it was widely rejected at the time by the leading 20th century physicists, including Niels Bohr. '' Who were these physicists? And what said Niels Bohr? I couldn't find anything. In the famous ''Gedankenexperiment'' at Solvay, he accepted ''E=mc²! [[User:AugustO|AugustO]] 02:14, 2 April 2012 (EDT)

:::And of course it ''isn't'' a "general claim of equivalence between mass, energy and the speed of light." It's a statement of equivalence between energy and matter. Andy seems to be obsessed with the idea that light is involved somehow, and that conflicts with his rather odd idea that the Bible forbids a unified theory. I can only wonder what he'll do if science comes up with a unified theory. Probably deny that too. --[[User:SamCoulter|SamCoulter]] 02:16, 2 April 2012 (EDT)

Aschlafly, according to the information I found (Einstein and Bohr at the Solvay-conference), Niels Bohr accepted ''E=mc²''. So, a fact-tag was the only alternative to downright deleting the sentence: it allows you to bring up your sources! [[User:AugustO|AugustO]] 02:31, 2 April 2012 (EDT)
:I'd have been amazed if he hadn't. Bohr was on the British team for the Manhattan Project, and he wouldn't have been much use at nuclear weapon design if he didn't accept E=mc2. --[[User:SamCoulter|SamCoulter]] 02:41, 2 April 2012 (EDT)

::Aschlafly, you have a tendency to make up claims (''As a general claim of equivalence between mass, energy and the speed of light, it was widely rejected at the time by the leading 20th century physicists, including Niels Bohr. '', ''Undoubtedly many other experiments contradict the formula'', and, yes, '' "suddenly" or "at that time" is a nuance of the Greek ἰδού''). And when your bluff is called, you are miffed! [[User:AugustO|AugustO]] 03:00, 2 April 2012 (EDT)
::''Protected "E=mc²": insertion of a fact tag instead of finding and adding a reference.'' That is ridiculous: there is no way of ''finding and adding a reference'' for this made-up "''fact''"!
::It is, however, not very difficult to show that the ''fact'' was invented: just take a look into ''"Foundations of Quantum Physics I''", a book written by Niels Bohr and Jorgen Kalckar. Here Bohr uses what he calls ''Einstein's relation'' without any trepidation! [[User:AugustO|AugustO]] 09:00, 2 April 2012 (EDT)
:::Presumably, then, the relevant text should be changed to something like "it was widely rejected at the time by the leading 20th century physicists, although Niels Bohr later accepted it." and then add the citation. Or you could clarify with something like "the liberal Nobel Prizewinner Niels Bohr".--[[User:CPalmer|CPalmer]] 09:18, 2 April 2012 (EDT)
::::*There is no reason to think that there was a time at which Niels Bohr didn't accept it!
::::*Is there any source which shows that it was ''widely rejected at the time''? Of course, there was the [[Deutsche Physik]], but does this count?
::::*That said: the <nowiki>{{fact}}</nowiki> tag was absolutely appropriate.
::::[[User:AugustO|AugustO]] 09:44, 2 April 2012 (EDT)

:::::You make some valid points as the online evidence is remarkably scant, even though the disagreement between Bohr and Einstein is well-known. This may be a (rare) example where the internet is less adequate than books. I did add an explanatory footnote and the protection to the page should be expiring soon, if not already.--[[User:Aschlafly|Andy Schlafly]] 10:22, 2 April 2012 (EDT)

*Einstein disagreed with Bohr regarding quantum mechanics. Could you provide a source that Bohr disagreed with Einstein on the theory of relativity? I can't find one!
*As I said, the <nowiki>{{fact}}</nowiki> tag was absolutely appropriate, and I'll reinsert it, as I don't think that there are any sources to back-up your claim.
*Furthermore, I have difficulties to believe that Lord Rutherford had problems with ''E=mc²'', he seemed to appreciate the liquid-drop-model of Gamov, Bohr, et al.
*''a general claim of equivalence between mass, energy and the speed of light'': no one claims that the '''three''' are equivalent!
[[User:AugustO|AugustO]] 11:22, 2 April 2012 (EDT)

== First sentence ==

I've changed the introduction to something a bit more encyclopaedic. Please don't revert without discussing it first. Thanks. --[[User:SamCoulter|SamCoulter]] 16:28, 2 April 2012 (EDT)

== Political Pressure ==

''Political pressure has since made it impossible for anyone pursuing an academic career in science to even question the validity of this nonsensical equation''

More likely the fact that similar experiments as the one Cockcroft and Walton are performed by undergraduates in each department teaching physics around the world! [[User:AugustO|AugustO]] 02:30, 3 April 2012 (EDT)

:No, that would not explain why it "is impossible for anyone pursuing an academic career in science to even question the validity of" E=mc2. Even if you think the formula is somehow true, surely you do not deny the political pressure in academia against anyone who might consider questioning it.--[[User:Aschlafly|Andy Schlafly]] 10:37, 3 April 2012 (EDT)
::It's entirely possible for someone who questions the validity of E=mc2 to pursue a career in science; scientists are encouraged to question the validity ''everything''. However if they ''deny'' the validity of E=mc2 then a scientific career is indeed off-limits to them, for the same reason as it's off-limits to someone who denies that 1+1=2. The fact is, E=mc2. It's been verified time and time again. --[[User:SamCoulter|SamCoulter]] 18:44, 3 April 2012 (EDT)

To talk about political pressure in this context is ridiculous. The conversion of Mass to Energy and vice versa and the validity of E=mc2 has been demonstrated experimentally so often(an early example is given in the main page) that to deny that the equation describes observed nature flies in the face of observation and is thus unscientific. To question its validity without hard experimental evidence or a sound theoretical argument (neither of which has been demonstrated) would simply be a matter of scientific (in)competance.[[User:Jloveday|Jloveday]] 15:16, 3 April 2012 (EDT)

:*Aschlafly, if you argue against ''E=mc²'' out of a position of (willful) ignorance, you won't be taken seriously. Unfortunately this is what you are doing, as your (non-) answer [[Talk:E=mc²#A few questions for Aschlafly regarding the experiment of Cockroft and Walton|above]] is showing.
:*Criticism of ''E=mc²'' on ideological grounds just doesn't work, as the adherents of the [[Deutsche Physik]] found out in the early 1940s.
:*But obviously, the theory is under constant discussion, as is the concept of energy or mass.
:[[User:AugustO|AugustO]] 18:34, 3 April 2012 (EDT)

== Matter-light relationship ==

Mr. Schafly, I think you are misunderstanding the nature of the <math>E=mc^2</math> relationship. To illustrate, I will give an example.

Suppose we have a map where 1 inch of distance on the map corresponds to 5 miles actual distance. If points A and B are located 2.5 inches apart on the map, we can compute the actual distance between them as follows:
:<math>2.5 \textrm{ map\,in} \cdot \frac{5 \textrm{ mi}}{\textrm{map\,in}} = 12.5 \textrm{ mi}</math>
In general, if the map distance between two points is <math>d</math> and the actual distance between the points is <math>D</math>, then the following formula is satisfied:
:<math>D = dc</math>
where <math>c</math> is the conversion factor <math>\frac{5 \textrm{ mi}}{\textrm{map\,in}}</math>. The equation above does not relate distance to five or map distance to quintessence. Rather, it posits a direct relationship (or equivalence) between the map distance and the actual distance, related by a conversion factor.

Likewise, <math>E=mc^2</math> posits a direct relationship between mass and energy. It does not relate mass to the speed of light (or light itself), nor does the equation related light to energy. Rather, <math>c^2</math> is a conversion factor, just like the <math>c</math> was in our equation for computing actual distances from map distances. I hope this helps explain why some editors have concern with your statement of the relationship posited by <math>E=mc^2</math>. [[User:GregG|GregG]] 00:19, 4 April 2012 (EDT)

:But Energy and mass have known meanings in other contexts, unlike the distances (in inches) on the map page in your example. If Energy or mass were being redefined by E=mc2, then I think your analogy would work. But people are not defending E=mc2 by saying it entails a redefinition of Energy or mass.--[[User:Aschlafly|Andy Schlafly]] 01:00, 4 April 2012 (EDT)
::The equation postulates how mass and energy can be interchanged while conserving the total amount of mass energy. For example, according to the equation, a nuclear reaction that causes 1.0 kg of mass to be lost will produce 9.0 x 1016 J energy. The amount of energy produced ''by the loss of mass'' is proportional to the mass lost. It is the same sort of equivalence between the number of pounds you get at a currency exchange and the number of dollars you pay (which, come to think of it, is probably an even better analogy). [[User:GregG|GregG]] 01:13, 4 April 2012 (EDT)
:::Energy and mass have known meanings in THIS context! The equation tells us how much energy will be liberated by losing a set amount of mass, or how much energy (for example hard gamma rays) is required to create a set amount of mass. It is a valid equation. It doesn't matter ''what'' objections anyone has to it based on principle or logic; it's been tested and it's correct. This is getting pretty frustrating. --[[User:SamCoulter|SamCoulter]] 01:56, 4 April 2012 (EDT)

===A question===

Mr Schlafly, you've said that this equation "purports" to describe the equivalence of matter and energy. The fact is, it's been repeatedly tested and it ''does'' describe the equivalence of matter and energy. However I get the feeling that there's some misunderstanding here. What, exactly, is your objection to E=mc2? Do you think it's incorrect - in which case go check the experimental data - or do you think it's being used to advance some sort of political agenda? I think we've reached a deadlock here and to make any progress on improving the article it would be helpful to know what you think is wrong with the equation. --[[User:SamCoulter|SamCoulter]] 02:02, 4 April 2012 (EDT)

E=mc²

2012-04-04T05:58:30Z

SamCoulter: Undo revision 973551 by Aschlafly (talk)It DOES describe the equivalence of matter and energy. Please discuss before reverting again.

'''E=mc²''' is an equation that, according to the [[theory of relativity]], describes the equivalence of matter and energy.<ref>According to the [[theory of relativity]], this equation describes the equivalence of matter and energy. This equation claims that the total energy ''E'' of a body in all forms is equal to that body's mass ''m'' multiplied by the square of the speed of light ''c''. In [[natural units]], where ''c'' is set to be ''1'' and without dimension, the equation becomes ''E''=''m''.</ref> In fact, no theory has successfully unified the laws governing mass (''i.e.'', gravity) with the laws governing light (''i.e.'', electromagnetism). Simply put, E=mc² is [[liberal]] claptrap. As a statement of equivalence between mass and energy, it was rejected at the time by the leading 20th century physicists, including [[Niels Bohr]].<ref>Bohr disagreed with Einstein's 1905 paper, and many other scientists (including Lord Rutherford and Princeton Physics Professor [[Robert Dicke]]) rejected the [[Theory of Relativity]]; Bohr later agreed to some parts of relativity but continued to defend [[quantum mechanics]] against criticism by Einstein.</ref>{{fact}} Political pressure has since made it impossible for anyone pursuing an academic career in science to even question the validity of this nonsensical equation.{{fact}}

[[Biblical Scientific Foreknowledge]] predicts that a unified theory of all the laws of physics is impossible, because light and matter were created at different times, in different ways, as described in the [[Book of Genesis]].

[[Mass]] is a measure of an object's inertia, in other words its resistance to acceleration. In contrast, the intrinsic [[energy]] of an object (such as an [[atom]]) is a function of electrostatic charge and other non-inertial forces, having nothing to do with gravity. Declaring the object's energy to be a function of inertia rather than electrostatics is an absurd and impossible attempt to unify the forces of nature, contrary to [[Biblical Scientific Foreknowledge]].

For more than a century, the claim that '''E=mc²''' has never yielded anything of value. Often it seems to be used as a redefinition of "[[energy]]" for pseudo-scientific purposes, as by the [[lamestream media]]. There have been attempts to find some justification for the equation in already understood processes involved in [[nuclear power]] generation and [[nuclear weapon]]s, and in the speculation about [[antimatter]].<ref>Tyson, Peter. "The Legacy of E=mc²." October 11, 2005. PBS ''NOVA''. http://www.pbs.org/wgbh/nova/physics/legacy-of-e-equals-mc2.html</ref>

The [[Theory of Relativity]] has never been able to mathematically derive '''E=mc²''' from first principles, and a physicist observed in a peer-reviewed paper published in 2011 that "a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory."<ref>[http://adsabs.harvard.edu/abs/2011AmJPh..79..591H Eugene Hecht: ''How Einstein confirmed E0=mc²'', American Journal of Physics, Volume 79, Issue 6, pp. 591-600 (2011)]</ref>

It has been known for a long time that radiation has a mass equivalence, which was correctly derived by [[Henri Poincare]] in 1904,<ref>[http://www.opticsinfobase.org/josa/abstract.cfm?uri=josa-42-8-540 Herbert E. Ives ''Derivation of the Mass-Energy Relation'', JOSA, Vol. 42, Issue 8, pp. 540-543 (1952)]</ref> but the equation '''E=mc²''' makes a claim far beyond that limited circumstance:

{{cquote|The equality of the mass equivalent of radiation to the mass lost by a radiating body is derivable from Poincaré’s momentum of radiation (1900) and his principle of relativity (1904).|||Herbert Ives, 1952}}

== Description for the layman ==
Ten top physicists were asked to describe in laymen's terms '''E=mc²''':<ref>[http://www.pbs.org/wgbh/nova/einstein/experts.html Lexi Krock, David Levin (editors) ''E=mc² explained'', June, 2005. PBS ''NOVA'']</ref>{{cquote|''Things that seem incredibly different can really be manifestations of the same underlying phenomena.''|||Nima Arkani-Hamed, Theoretical Physicist, Harvard University}}{{cquote|''You can get access to parts of nature you have never been able to get access to before.''|||Lene Hau, Experimental Physicist, Harvard University}}{{
cquote|''It certainly is not an equation that reveals all its subtlety in the few symbols that it takes to write down.''|||Brian Greene Theoretical Physicist Columbia University}}

== History of '''E=mc²''' ==

The [[liberal]] [[Public Broadcasting Service]] explained the history of '''E=mc²''' for its NOVA series as follows:<ref>[http://www.pbs.org/wgbh/nova/physics/ancestors-einstein.html David Bodanis ''Ancestors of E=mc²''], NOVA, Nov 10, 2005]</ref>

{{cquote|Over time, [[physicist]]s became used to multiplying an object's mass by the square of its [[velocity]] (mv²) to come up with a useful indicator of its energy. If the velocity of a ball or rock was 100 mph, then they knew that the energy it carried would be proportional to its mass times 100 squared. If the velocity is raised as high as it could go, to 670 million mph, it's almost as if the ultimate energy an object will contain should be revealed when you look at its mass times c squared, or its mc².}}

==Experimental verification==
The first experimental verification for the equation was performed 1932 by a team of an English and an Irish physicist, John Cockcroft and Ernest Walton, as a byproduct of ''"their pioneer work on the transmutation of atomic nuclei by artificially accelerated atomic particles"''<ref>[http://www.nobelprize.org/nobel_prizes/physics/laureates/1951/# Nobel Prize Organization]</ref> for which they were honored with the [[Nobel Prize]] in physics in 1951. The idea of the mass defect - and its calculation using ''E=mc²'' can be found on page 169-170 of his Nobel lecture.<ref>[http://www.nobelprize.org/nobel_prizes/physics/laureates/1951/cockcroft-lecture.pdf John D. Cockroft ''Experiments on the interaction of high-speed nucleons with atomic nuclei''], Nobel Lecture, Dec 11, 1951]</ref>

They bombarded [[Lithium]] atoms with [[protons]] having a [[kinetic energy]] less than 1 [[Electron-Volts|MeV]]. The result were two (slightly less heavy) [[α-particle]]s, for which the [[kinetic energy]] was measured as 17.3 MeV

:::::<math>{}_3^7\mathrm{Li}\, +\, {}_1^1\mathrm{H}\,\rightarrow\,2\, {}_2^4\mathrm{He}</math>

The mass of the particles on the left hand side is 8.0263 [[atomic mass units|amu]]s, the mass on the right hand side ''only'' 8.0077 amu.<ref>Gerard Piel ''The age of science: what scientists learned in the 20th century'', Basic Books, 2001, p. 144-145</ref> The difference between this masses is .00186 amu, which results in the following back-of-an-envelope calculation:

::::<math>0.00186\,\mathrm{amu} \cdot c^2 = 0.0186 \cdot 1.66 \cdot 10^{-27}\,\mathrm{kg}\cdot\left(3\cdot10^8\,\mathrm{\frac{m}{s}}\right)^2</math>
::::<math>\approx\,2.79\cdot 10^{-12} \,\mathrm{kg}\mathrm{\frac{m^2}{s^2}}</math>
::::<math>\approx \,17.3\,\mathrm{MeV}</math>

Accurate measurements and detailed calculations allowed for verifying the theoretical values with an accuracy of ±0.5%. This was the first time a nucleus was artificially split, and thereby the first transmutation of elements using accelerated particles:

Some claim that the best empirical verification of '''E=mc2''' was done in 2005 by Simon Rainville et al., as published in ''Nature'' (which is not a leading physics journal).<ref>[http://www.nature.com/nature/journal/v438/n7071/full/4381096a.html Nature 438, 1096-1097 (22 December 2005)] doi:10.1038/4381096a; Published online 21 December 2005</ref> The authors state in their article in ''Nature'' magazine that "Einstein's relationship is separately confirmed in two tests, which yield a combined result of 1−Δmc²/E=(−1.4±4.4)×10−7, indicating that it holds to a level of at least 0.00004%. To our knowledge, this is the most precise direct test of the famous equation yet described."

==A Famous Example -- Nuclear Fission of Uranium==

For most types of physical interactions, the masses of the initial reactants and of the final products match so closely that it is essentially impossible to measure any difference. But for nuclear reactions, the difference is measurable. That difference is related to the energy absorbed or released, described by the equation E=mc². (The equation applies to '''all''' interactions; the fact that nuclear interactions are the only ones for which the mass difference is measurable has led people to believe, wrongly, that E=mc² applies only to nuclear interactions.)

The [[Theory of Relativity]] played no role in this work, but later tried to retrofit the theory to the data in order to explain the explain the observed mass changes. Here is the most famous example of the mass change.

Nuclear fission, which is the basis for nuclear energy, was discovered in experiments by [[Otto Hahn]] and [[Fritz Strassman]], and analyzed by [[Lise Meitner]], in 1938.

The decay path of [[Uranium]] that figured in the ''Hahn-Strassmann experiment'' may have been this:

:235U → 140Xe + 91Sr + 4n

(The [[Xenon]] decayed within about a minute to 140Ba. There are a large number of fission paths and fission products, but they were searching for the chemical signature of [[Barium]].)

The masses of the particles are:

{| class="wikitable" border="1" cellpadding="8" cellspacing="0"
! Substance
! 235U
! 140Xe
! 91Sr
! 4 neutrons
|-
| Number of protons
| 92
| 54
| 38
| 0
|-
| Number of neutrons
| 235
| 140
| 91
| 4
|-
| Number of electrons
| 92
| 54
| 38
| 0
|-
| Mass
| 235.04393
| 139.92164
| 90.910203
| 4.03466
|}

The mass of the Uranium atom is 235.04393, and the sum of the masses of the products is 234.866503. The difference is .177427 amu, or, using the E=mc² equation, 165 million electron volts. (The generally accepted value for the total energy released by Uranium fission, including secondary decays, is about 200 million electron volts.)

The insight that the conversion from Uranium to Barium was caused by complete fission of the atom was made by Lise Meitner in December, 1938. She had the approximate "mass defect" quantities memorized, and so she worked out in her head, using the E=mc² equation, that there would be this enormous release of energy. This release was observed shortly thereafter, and the result is nuclear power and nuclear weapons.

==A Topical Example: Speed of Extremely Energetic Neutrinos==
Here is another example of the use of this formula in physics calculations. Recently there has been quite a controversy over whether neutrinos were observed traveling at a speed faster than light. Relativity doesn't allow that, and, since neutrinos have nonzero (but incredibly tiny) mass, they aren't even supposed to travel ''at'' the speed of light. This very issue came up on the [[Talk:Main_Page#Neutrinos]]. The speeds under discussion were calculated by the use of E=mc2.

The mass of a neutrino is about 0.44x10-36kilograms. (Normally all of these things are measured in more convenient units such as Giga-electron-Volts, but that makes implicit use of E=mc2. If we don't accept that, we have to do the calculations under classical physics, using SI (meter/kilogram/second) units.) The neutrinos were accelerated to an energy of about 17GeV, or .27x10-8Joules. Using the classical formula <math>\mathrm{E} = \frac{1}{2}mv^2</math>, we get v=110x1012meters per second. This is about 370,000 times the speed of light.
However, the classical formula breaks down at speeds close to <math>c</math>, and indeed, as the speed of a massive object approaches <math>c</math>, the object's kinetic energy approaches <math>+\infty</math>.

Several scientists have gone on record stating that the neutrinos, which have mass, travel at precisely the speed of light. If true, this disproves the [[Theory of Relativity]] and the claim that '''E=mc2'''. However, it is more likely that those scientists are using language inaccurately. It is impossible to measure the speed of neutrinos precisely. What is meant is the difference between the speed of light and the speed of the neutrinos is too small to measure.

==Deducing the Equation From Empirical Observation==

While the equation was historically developed on theoretical grounds as an inevitable consequence of special relativity, it is possible to deduce it purely from empirical observation.

So, for the purposes of this section, imagine that one is in the era of "classical physics"; prior to 1900 or so. Relativity has not been invented, but, inexplicably, nuclear physics has. Imagine that the phenomena of radioactivity and nuclear fission have been observed, without any knowledge of relativity.

A well-accepted physical law of classical physics was the law of conservation of mass. This was not easy to deduce. It required careful analysis of such phenomena as combustion, in the 1700's, to eliminate the various confounding sub-phenomena that made the law difficult to see. But, by 1900, the law was well established:

:::*'''In all interactions, mass is precisely conserved.'''

For example, the mass of a TNT molecule is 227.1311 Daltons, or 227.1311 g/mol, which is, for all practical purposes, the same as the mass of its constituent Carbon, Hydrogen, Nitrogen, and Oxygen atoms. It is essentially impossible to measure the difference. The principle of conservation of mass is upheld.

But when nuclear phenomena are discovered, we notice something different. The masses of the result particles after an event (e.g. alpha decay, nuclear fission, or artificial transmutation) is measurably less than the masses of the original particle(s). With the invention of the mass spectrometer around 1920, it became possible to measure atomic weights of various isotopes with great precision.

Radium-226 decays into Radon-222 by emission of an alpha particle with an energy of 4.78 MeV.

1 kg of Radium-226 = <math>\frac{.622 \times 10^{27}}{226.0254}</math> atoms. (The numerator is Avogadro's number, and the denominator is the atomic weight of Radium-226.) This is 2.6643647 * 1024 atoms.

That number of Radon-222 atoms has mass .98226836 kg. That number of alpha particles has mass .01770863 kg.
The mass lost is .00002301 kg.

Each emitted alpha particle has energy of 4.78 MeV, or 4.78 * .1602 * 10-18 Joules. The total alpha energy from the decay of 1 kg of radium is 2.04 * 1012 Joules.

Also, Radon-222 decays into Polonium-218 by emission of an alpha particle with an energy of 5.49 MeV.

1 kg of Radon-222 = <math>\frac{.622 \times 10^{27}}{222.0176}</math> atoms. This is 2.7124611 * 1024 atoms.

That number of Polonium-218 atoms has mass .98194467 kg. That number of alpha particles has mass .01802830 kg.

The mass lost is .00002703 kg.

Each emitted alpha particle has energy of 5.49 MeV. The total alpha energy from the decay of 1 kg of polonium is 2.39 * 1012 Joules.

It looks as thought we have to rewrite the law of conservation of mass:

:::*'''In all "ordinary" interactions, mass is precisely conserved.'''
:::*'''In nuclear interactions, there is a small but measurable loss of mass.'''

:By the way, we can clearly see that atomic weights of pure isotopes are not integers, and that it has something to do with the energy released by nuclear disintegration. In retrospect, the formula E=mc² explains the non-integer character of atomic weights.

Making special cases like this is unsatisfactory, of course.

We do this for a few other interactions, including the explosion of TNT. This would include the Lithium-plus-Hydrogen and Uranium fission phenomena described above. We won't bother with the details. As observational scientists, we look for patterns in the behavior of nature. We make a table:

{| class="wikitable" border="1" cellpadding="8" cellspacing="0"
! interaction
! energy released per kg, Joules
! mass lost per kg of original substance, kg
|-
| explosion of TNT
| 4.184 * 106
| seems to be zero
|-
| alpha decay of Ra-226
| 2.04 * 1012
| .00002301 kg
|-
| alpha decay of Rn-222
| 2.39 * 1012
| .00002703 kg
|}

We plot these, and a few others, not shown, on graph paper, and find to our amazement that the relationship is linear.

For Ra, m/E = .112794118 E-16
For Po, m/E = .113096234 E-16

If this is linear, the mass defect for TNT would have been .47 * 10-10. We couldn't possibly have measured this.

So we can rewrite the rule for conservation of mass in a more satisfactory way:

:::*'''In all interactions, there is a loss of mass, equal to about .113 * 10-16 kg per Joule of energy released.'''

What we thought was exact conservation is just very nearly exact, and we hadn't been able to measure it before.

But maybe there's more. This constant has dimensions of kilograms per Joule. From high-school physics, we know that that is seconds squared divided by meters squared. That is, it is the reciprocal of the square of a velocity. We calculate that velocity. It is about 2.97 * 108 meters per second. Very close to the speed of light! Very interesting! (The calculations above were not extremely precise. The formula has been verified with great precision, but not here.)

We don't understand why (that will have to wait for the invention of relativity), but we can formulate a hypothesis:

:::*'''In all interactions, there is a loss of mass, equal to <math>\frac{1}{c^2}</math> times the amount of energy released.'''

We don't have to give the units any more, since everything is now dimensionally correct.

::There is a very interesting analogy with the discovery of [[Maxwell's Equations]]. Maxwell found an interesting relationship involving the fundamental constants <math>\epsilon\,</math> and <math>\mu\,</math> appearing in his equations. Specifically, <math>\epsilon\mu\,</math> has the dimensions of seconds squared divided by meters squared, and that:

:::::<math>\frac{1}{\epsilon\mu} = c^2</math>

::where "c" was the known velocity of light. He also showed that his equations predict electromagnetic waves, propagating at that speed.

This is a common way that scientific discoveries are made. But, as stated above, this is not how E=mc² was discovered. But it could have been. But in the event, it wasn't.

==See also==
[[Counterexamples to Relativity]]

[[essay:Rebuttal to Counterexamples to Relativity]]

== References ==
<references />
[[Category:relativity]]
[[Category:physics]]
[[Category:science]]
[[Category:Bible]]

Talk:E=mc²

2012-04-04T05:56:46Z

SamCoulter: /* Matter-light relationship */

==I'm Finding This a Little Hard to Understand==
First off, E = mc2 describing a relationship between energy and matter is only one corollary. It is also part of a well known problem in chemistry... Or is isotopic mass not less than the sum of it's parts? The equation itself HAS been derived from the Theory of Relativity, and is a direct consequence of the energy momentum four vector for an object with 0-momentum. The quote you provide from the paper states that the theory is not enough for a rigorous PROOF, but it never tries to deny the derivability of the equation. Derivation and proof are two entirely different things.

==This Article Could Use Sources or Better Explanation==
Wow. Classic Andy. Unsourced statements supposedly contradicting well-established theories of physics. No real proof other than "the Bible says it's not true," even though this is an extremely uncommon interpretation Genesis. --[[User:AndreaM|AndreaM]] 01:06, 25 March 2012 (EDT)

:It's a start for now, and will expand over time. That's how wikis work.--[[User:Aschlafly|Andy Schlafly]] 01:18, 25 March 2012 (EDT)
::Doesn't it relate energy to mass? The speed of light is just a constant here. [[User:IanR|IanR]] 02:22, 25 March 2012 (EDT)

== Humbug ==

The phrase ''meaningless, almost nonsensical, statement '' (as used in the article) fits the first paragraph to a t.

Aschlafly, please try to refute the explanation of the experiments of John Cockroft and Ernest Walton, which is accepted generally under physicists. And try to give some sources - or if not, some of your own calculations!

If not, just erase the first section.

[[User:AugustO|AugustO]] 11:23, 25 March 2012 (EDT)

== Nobel Lecture ==

I took out the link to the Nobel lecture, it can be found in the short summary. But be aware that John Cockroft is using the dreaded formula with ease (but without stating so explicitly - why should he, it's already generally accepted!) An astute reader, who not only searches for the formula finds e.g., the formulation:

:'''This energy could be provided by a diminution of mass of 0.0184 mass units.'''

Indeed, these are the ≈ 17MeV!
[[User:AugustO|AugustO]] 11:51, 25 March 2012 (EDT)

==Irrelevant claims==
Are these claims of so called "experimental verification" valid or useful? If you look at enough so-called science you can find people claiming anything. --[[User:DavidEdwards|DavidEdwards]] 12:59, 25 March 2012 (EDT)
:''you can find people claiming anything'' Indeed - and that's why there is a difference between the unsubstantiated claims in the first section, and the actual experiments in the following paragraphs. If you have a good explanation of the outcome of these experiments (some math would be nice), feel free to add your personal ''claim''.
:[[User:AugustO|AugustO]] 13:03, 25 March 2012 (EDT)
::Why do you feel that I need to do that? I understand that you may wish to believe relativity is true, but that is no reason to impose your personal beliefs on others.--[[User:DavidEdwards|DavidEdwards]] 13:40, 25 March 2012 (EDT)
:::Thinking that all claims have the same validity seems not a very conservative position. I don't expect you to accept my personal beliefs, but there is a tendency in physics that the claims which are backed up by those willing to do the experiments and the maths have a greater following than random insights. [[User:AugustO|AugustO]] 13:47, 25 March 2012 (EDT)
::::I don't understand why your personal beliefs are even included in the article.--[[User:DavidEdwards|DavidEdwards]] 13:58, 25 March 2012 (EDT)
:::::*Because they are bolstered by experiments...
:::::*...and they aren't just my beliefs - in fact it will be very hard to find a physicist who doesn't share them. And that's something which shouldn't be easy to ignore in an article on a physical subject.
:::::[[User:AugustO|AugustO]] 14:02, 25 March 2012 (EDT)
::::::If science is your religion then you will find scientists who share your views. I still don't see why they should be hosted here. The introduction makes the Biblical position clear.--[[User:DavidEdwards|DavidEdwards]] 14:07, 25 March 2012 (EDT)
:::::::Religion is my religion, science is my hobby. And just because there is one single interpretation of a few verses of Genesis out there which you think to contradict the experiments of the physicists doesn't shatter my religious beliefs nor my trust in physics. [[User:AugustO|AugustO]] 14:35, 25 March 2012 (EDT)
::::::::Then why do you insist with this anti-religious pseudoscience?--[[User:DavidEdwards|DavidEdwards]] 14:41, 25 March 2012 (EDT)
← Now you have intrigued me: what's your definition of pseudoscience? [[User:AugustO|AugustO]] 14:45, 25 March 2012 (EDT)

Pssst! DavidEdwards! You're trying waaaaay too hard. --[[User:JoshuaB|JoshuaB]] 21:20, 25 March 2012 (EDT)
:Too hard about what?
:As far as the pseudoscience question is concerned - "science" which is used to promote a worldview which has no basis in moral reality is pseudoscience. Science which is designed to suggest that morality is relative clearly falls into this category.--[[User:DavidEdwards|DavidEdwards]] 18:40, 26 March 2012 (EDT)

==Question==
This snipet of sentence appears in the introduction: "...''a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory.''" Let's compare that to the entire sentence it was lifted from: "'''''Leaving aside that it continues to be affirmed experimentally,''' a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory.''" One can't help but notice that the part of the sentence that states that the theory has been observed to be valid in real world experimentation, has been surgically removed. Why is this? Is it because it stands in contradiction to the claim the lead author of this article is trying to promulgate? --[[User:JoshuaB|JoshuaB]] 20:55, 25 March 2012 (EDT)

:Peer-reviewed journals won't publish a criticism of relativity. That's obvious. Although I don't have a copy of the full paper, I doubt it attempts to fully support the [[hearsay]] that was excluded, and I would not be surprised if it was included simply to safeguard against complaints for what followed. It adds nothing to the basic point that follows and is quoted here.--[[User:Aschlafly|Andy Schlafly]] 21:19, 25 March 2012 (EDT)

::Why won't a peer-reviewed journal publish a criticism of SR or GR? Liberal conspiracy? Also, do you not accept that mass and energy are interchangeable or is it a problem with this specific equation? --[[User:JoshuaB|JoshuaB]] 21:24, 25 March 2012 (EDT)

:::JoshuaB, do you accept the possibility that the [[Theory of Relativity]] may be false, and would you approve a well-written paper that criticized it? It's a simple "yes" or "no" question.--[[User:Aschlafly|Andy Schlafly]] 21:55, 25 March 2012 (EDT)

::::Yes. We already know the Theory of Relativity is an incomplete model of our universe. So yes, the theory may be "false", but the one that takes it's place will most likely have many of the same properties. Secondly, would I approve of a "well-written paper that criticized it"? I don't know what that means. I'm not a physicist, so I don't see what difference my "approval" of said paper would make. Now that I've been so kind as to answer your questions, would you return the courtesy and answer the ones I posted above? --[[User:JoshuaB|JoshuaB]] 22:35, 25 March 2012 (EDT)

:::::The qualifications on your answer render it almost meaningless. I'm not asking whether your approval of a paper would make a difference, or your opinion about whether you think the replacement of the [[Theory of Relativity]] will "most likely" be another theory of relativity. The question was simple and straightforward, referring to a paper critical of the theory of relativity without any appeasement to those who insist on believing in it. An unqualified answer is requested.

:::::Also, did you ever answer my simple question on [[Talk:Main Page]] about how much time you've spent reading the [[Bible]] this month?--[[User:Aschlafly|Andy Schlafly]] 22:50, 25 March 2012 (EDT)

::::::Come off it Schlafly. This article is not about my Bible reading, is it? No. Does my opinion of the publishing criteria of physics academia have any bearing on the assertions you are trying make? No. Again: Do you not accept that mass and energy are interchangeable or is it a problem with this specific equation? --[[User:JoshuaB|JoshuaB]] 23:11, 25 March 2012 (EDT)

:::Andy, do you accept the possibility that the Theory of Relativity may be correct, and would you approve a well-written paper or book that supported it? It's a simple "yes" or "no" question. --[[User:FrederickT3|FrederickT3]] 03:28, 26 March 2012 (EDT)

== Some points ==

*''Misplaced claims of experimental verification'': if you want to put on the disclaimer ''misplaced'', please explain the results of the experiments in another way.
*''Why won't a peer-reviewed journal publish a criticism of SR or GR?'' But they do: remember the neutrino thing? Or the papers of H. Ives? In fact the first event has shown that especially the publication of experiments (seemingly) violating currently accepted theories gets attention!
*Taking only the second half of ''"Leaving aside that it continues to be affirmed experimentally, a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory."'' makes you looking deceptive. Take the whole sentence and try to explain the motivation of the first half. Otherwise anyone who looks the quote up will suspect an ulterior motive!
*The whole first section is a train wreck.
*''[[Mass]] is a measure of an object's inertia, and is directly related to the forces of [[gravity]].'' Only when you accept the general theory of relativity it is, otherwise inertial mass and gravitational mass are quite different animals.
[[User:AugustO|AugustO]] 02:46, 26 March 2012 (EDT)

::I have attempted to clarify the last point on the [[Mass]] page, and also removed the fact template from the first paragraph, since the explanation is given later on. As it stood, the "citation needed" banners following important points tended to undercut the authority of the article.--[[User:CPalmer|CPalmer]] 08:29, 26 March 2012 (EDT)
::The problem is not a confusion of weight and mass, but the conflation of gravitational and inertial mass. In the classical theory, there is no reason why both should be the same, it's just an experimental fact.
::So, I'm sorry, your new entry didn't help.
::[[User:AugustO|AugustO]] 08:40, 26 March 2012 (EDT)

:::But they always are the same, aren't they? I don't see why knowing or not knowing the reason (yet) has any bearing on the question.--[[User:CPalmer|CPalmer]] 08:43, 26 March 2012 (EDT)

::::Aschlafly writes: ''Mass is a measure of an object's inertia, and is directly related to the forces of gravity. In contrast, the intrinsic energy of an object (such as an atom) is a function of electrostatic charge and other non-inertial forces, having nothing to do with gravity.''
::::E=mc² isn't about gravity, to invoke it here is a deflection. [[User:AugustO|AugustO]] 08:49, 26 March 2012 (EDT)

::::: OK. But bear in mind that this page clearly exists to provide a counterweight to certain liberal views. To do that, clarity of message is needed, and a "citation needed" banner has a deflating effect on the strength of that clarity. So perhaps you could suggest a wording that might be acceptable without the "citation needed" bit?--[[User:CPalmer|CPalmer]] 09:03, 26 March 2012 (EDT)

No, I can't. Frankly, I don't see the clarity in this piece: at the moment, it is still sadly missing. So I hope, that Aschlafly taking care of the fact-tags (other then trimming them away) will add to this clarity! [[User:AugustO|AugustO]] 09:13, 26 March 2012 (EDT)

== Examples of how meaningless E=mc² is: descriptions for the layman ==

Try to explain a complicated formula in 1-2min, then have a single sentence of this soundbit taken out. You can bet that this may sound meaningless. That's no fault of the formula. I'll change the title back. [[User:AugustO|AugustO]] 09:58, 26 March 2012 (EDT)

:The quotes (and others that could be added) illustrate how meaningless the formula is.--[[User:Aschlafly|Andy Schlafly]] 10:02, 26 March 2012 (EDT)
::The quotes illustrate how difficult it is to explain the concept to a layman. Take a look [http://www.pbs.org/wgbh/nova/einstein/expe-text.html here], where you can find the quotes in context. [[User:AugustO|AugustO]] 10:16, 26 March 2012 (EDT)

:::The quotes were solicited to describe the meaning of the equation to laymen, not to illustrate how difficult that is. The difficulty arises from the meaningless nature of the equation.--[[User:Aschlafly|Andy Schlafly]] 11:01, 26 March 2012 (EDT)
::::Actually the meaning of the equation is very clear: the total energy contained in matter is its mass multiplied by the speed of light in a vaccum squared. Experiment after experiment, and nuclear reactor after nuclear reactor, has clearly demonstrated that the total energy released by a reaction is the lost mass multiplied by c2. Therefore whether the theories of relativity are true or not, E=mc2 is true. Equally, even if classical Newtonian mechanics was false, the kinetic energy of a moving mass would still be accurately described by Ek=1/2mv2. --[[User:SamCoulter|SamCoulter]] 16:34, 28 March 2012 (EDT)
::::Indeed. Internet quotes are really not very useful. A skilled researcher can always find someone saying something to justify their position however bizarre or immoral. This is a typical weakness (and response!) of those who have no real moral or religious basis for their convictions. --[[User:DavidEdwards|DavidEdwards]] 19:04, 26 March 2012 (EDT)
::::These quotes are absolutely meaningless. It looks like you took random sentences from the PBS article and then inserted them into the article as if they had any real significance. This is made even more moot when you consider the fact that the article claims that "Ten top physicists were asked to describe in laymen's terms E=mc²" and then you go on to quote three. Not to mention, most of the quotes aren't actually explaining what the equation means - a basic understanding of algebra and what the symbols mean is sufficient to understand its basic meaning - but rather what it entails, its implications. Tim Halpin-Healy's quote I think is better than taking some random sentences and then implying that they mean that physicists don't know what E=mc² means. --[[User:Tyg13|Tyg13]] 15:58, 1 April 2012 (EDT)

:::::The problem is that '''E=m2does not meaning anythimg that makes sense. Anyone is welcome to try to explain it here. Eating a pound of cake does not cause one's energy to increase by the speed of light squared.--[[User:Aschlafly|Andy Schlafly]] 16:06, 1 April 2012 (EDT)
::::::No, it doesn't. It causes your energy to increase by a number of foot-pounds equal to '''one pound''' times the speed of light squared. I've explained this to you already and it isn't difficult. --[[User:SamCoulter|SamCoulter]] 16:23, 1 April 2012 (EDT)
:At any rate, eating a pound of cake, is not nuclear physics, it is chemistry, where your cells digest and utilize the sugars within. Protiens are also converted into sugar.[[User:JonM|JonM]] 18:28, 1 April 2012 (EDT)

== Aschlafly, could you give us... ==

... your interpretation of the results of the experiment by Cockroft and Walton? Cockroft describes in his Nobel Lecture how the kinetic energy of the alpha-particles could be provided by ''diminution of mass of 0.0184 mass
units.'' (p. 170). Please take into account that this isn't about energy in form of electromagnetic waves!

If you don't address the results of the actual experiments, all your claims are just meaningless verbiage.
[[User:AugustO|AugustO]] 10:39, 26 March 2012 (EDT)

:Cockcroft (please spell his name correctly) does not even cite E=mc2 in his Nobel lecture.--[[User:Aschlafly|Andy Schlafly]] 11:01, 26 March 2012 (EDT)
::You don't think that it is ''implied'' by the quote that AugustO provided? --[[User:FrederickT3|FrederickT3]] 11:10, 26 March 2012 (EDT)

:::No, I don't. E=mc2 is supposedly a general truth of universal applicability. The case for it, if true, needs to be far stronger than what is quoted above.--[[User:Aschlafly|Andy Schlafly]] 11:15, 26 March 2012 (EDT)

From the lecture: ''It was obvious then that lithium was being disintegrated into two α-particles with a total energy release of 17.2 million volts. This energy could be provided by a diminution of mass of 0.0184 mass
units.''

Aschlafly, your ignorance is showing:
17.2 MeV /c² = 1.602*10-19kg m²/s² *17.2 *109/(3*108 m/s)² = 3.0616 * 10-29kg = 0.0184 amu

In fact as this is such a ''general truth of universal applicability'', J. Cockroft could take it for granted that his scientifically literate audience would be able to make this calculation.
[[User:AugustO|AugustO]] 11:26, 26 March 2012 (EDT)

:::One question, though: We have four protons and four neutrons on the left hand side of the equation, and four protons and four neutrons on the right hand side. So why the difference in mass?
:::Also, forgive my ignorance, but why is the 'energy' measured in volts? Volts are not a measure of energy.--[[User:CPalmer|CPalmer]] 11:40, 26 March 2012 (EDT)

*Bainbridge measured the mass of 7Li directly, using mass spectrometry.
*Indeed, three protons and four neutrons weight less than a 7Li - kernel
*Energy is measured in this cases in [[Electron-Volts]]. One electron volt is the energy of an electron which passed through a potential of 1 Volt.
[[User:AugustO|AugustO]] 11:54, 26 March 2012 (EDT)
:AugustO, please contribute something substantive instead of talking up a storm. Thanks.--[[User:JamesWilson|James Wilson]] 11:56, 26 March 2012 (EDT)
:::James Wilson, please don't interfere in interesting and substantive discussions. Thank you! [[User:Baobab|Baobab]] 12:12, 26 March 2012 (EDT)
::::"Baobab", please state what substance is coming out of this conversation. You have had a history of engaging in hefty talk. Please start contributing. I have had some great insights contributing in a few articles today and will continue to do so. Many thanks for your future contributions.--[[User:JamesWilson|James Wilson]] 12:47, 26 March 2012 (EDT)
:::::"James Wilson", AugustO is clarifying things and giving us some great insights, as CPalmer's latest reply shows. Discussions will often lead to better articles, which is why your interference was totally uncalled for. I guess your only motive was to defend Mr. Schlafly, but he can take care of himself and really doesn't need your help. Regards, [[User:Baobab|Baobab]] 13:30, 26 March 2012 (EDT)
::Thanks, AugustO. Relativity or no relativity, I am learning a lot from this discussion.--[[User:CPalmer|CPalmer]] 12:00, 26 March 2012 (EDT)
:::You are posing excellent questions! Indeed it should be of interest for Aschlafly, too:
:::'''Aschlafly, two protons (1.0073amu) and two neutrons (1.0087amu) have a combined mass of 4.0320 amu. An alpha-particle - existing from two protons and two neutrons - has a mass of 4.0015 amu. How do you explain this diminution of mass?
:::[[User:AugustO|AugustO]] 13:42, 26 March 2012 (EDT)
::::What real evidence do you have that these particles even exist? No doubt you've read it in a book or some "qualified person" has said it is true. In reality you accept these things on the word of somebody else - in other words your belief in the existence of these particles is a matter of scientific faith in something which you have no personal knowledge. There is obviously no problem with believing things on faith, but please don't pretend it's "true because science says it's true". Christians get their real truth from a higher authority.--[[User:DavidEdwards|DavidEdwards]] 18:49, 26 March 2012 (EDT)
:::::I find Mr O's position to be rather odd. He insists that Mr Schlafly - and only Mr Schlafly answers his questions. Yet at the same time Mr O steadfastly ignores comments specifically directed at him.--[[User:DavidEdwards|DavidEdwards]] 16:11, 28 March 2012 (EDT)
::::::If you're referring to your question about how he knows that protons and neutrons really exist, I suspect he thought it wasn't worth answering. I tend to agree. --[[User:SamCoulter|SamCoulter]] 16:15, 28 March 2012 (EDT)

@DavidEdwards: Sorry, [[User:DavidEdwards|DavidEdwards]], I didn't want to ignore you. I hadn't caught up after the databank mishap, I'm afraid.
So, to answer your questions: At school, we performed a couple experiments -there were teltron tubes, the Millikan the photo-electric effect, the Millikan Oil Drop experiment, de Broglie's electron diffraction experiments, etc. These experiments confirmed my persuasion that the electrons, protons and neutrons are physically real entities. The proposed theories explained these effects - and sitting in front of a computer, I'm surprised that you aren't willing to accept the theories behind semi-conductors. [[User:AugustO|AugustO]] 16:25, 28 March 2012 (EDT)
@SamCoulter: There is some truth in your statement, too: it's like asking a priest: ''let's talk about your religion without mentioning Jesus''... [[User:AugustO|AugustO]] 16:28, 28 March 2012 (EDT)

== Restoration ==

I could restore this page to the last version which I had edited. I don't know whether there were more entries. This should help to restore the article: perhaps one positive effect could be that Aschlafly marvels about the questions in the previous section for a while and rethinks his position! [[User:AugustO|AugustO]] 18:36, 26 March 2012 (EDT)

== Instead of the source - tag ==

*''E=mc² is a meaningless, almost nonsensical, statement in physics that purports to relate all matter to light.''
It relates matter to energy, the square of the speed of light is just the conversation factor
*''In fact, no theory has successfully unified the laws governing mass (i.e., gravity) with the laws governing light (i.e., electromagnetism).''
It isn't about gravitational mass, but about inertial mass. To identify both means to invoke the General Theory of Relativity
* ''Simply put, E=mc² is liberal claptrap. ''
How so? It works!
* ''Biblical Scientific Foreknowledge predicts that a unified theory of all the laws of physics is impossible, because light and matter were created at different times, in different ways, as described in the Book of Genesis.''
So, physicists should just give up looking for it? I dare to say that there are many Christian physicists - they may just not follow your special interpretation of Genesis!
[[User:AugustO|AugustO]] 09:29, 27 March 2012 (EDT)

== A few questions for Aschlafly regarding the experiment of Cockroft and Walton ==

I'd appreciate an answer by Aschlafly (and him alone) to the following questions:

'''1.''' Do you accept that the mass of the Lithium-kernel (7Li), of alpha-particles (4He) and of protons (1H) can be measured fairly accurately, as these are charged particles?

'''2.''' Do you accept the measurements for the mass of the particles as used by Cockroft and Walton, i.e.
:::{|
!particle
!mass
|-
|1H||1.0072 amu
|-
|4He||4.0011 amu
|-
|7Li||7.0130 amu
|}
If not, which values do you think to be right?

'''3.''' Do you agree that before the reaction the mass of the particles involved was 8.0202 amu?

'''4.''' Do you agree that after the reaction the mass of the particles involved is 8.00220 amu?

'''5.''' Do you agree that there is a mass decrease of 0.0180 amu?

'''6.''' Before the experiment, the Li was at rest and the proton had a kinetic energy of less than 1MeV. Do you accept these values?

'''7.''' After the experiment, a pair of alpha-particles was observed, both having an kinetic energy of 8.6MeV. Do you think that this value is correct?

'''8.''' Can you tell me where the mass went? Can you tell me where the energy came from?

'''9.''' If your answer to question 8. is ''no'' in both accounts, than my answer is that there is a theory which explains the conversion of mass to energy, even if you don't like it!

As this theory works for this experiment, and for all the other fissions and fusions, it isn't liberal claptrap, but a meaningful theory. And you can't blame physicists for using it! Of course, you can blame journalist to abuse the formula - but this isn't the result of ''liberal physics'', but of ''bad reporting'', as an abuse of the dictum ''1+1=2'' doesn't reflect badly on number-theorists, but only on the person misattributing it.

Thanks, [[User:AugustO|AugustO]] 08:04, 28 March 2012 (EDT)

:AugustO, chemical reactions can release energy, typically based not on the size of their mass but on the electrostatic energy prior to the reaction. Cockcroft's own paper accepting the Nobel Prize does not claim that his work proved that '''''E=mc2'''''. Undoubtedly many other experiments contradict the formula, or else we'd have seen far more claims of experimental verification of it.--[[User:Aschlafly|Andy Schlafly]] 11:20, 31 March 2012 (EDT)

Aschlafly, you haven't answered any of the questions above! Instead you are talking about something completely different:
*We are not talking about a ''chemical'' reaction! You should know the difference.
*Cockroft claims that the energy comes from the loss of mass - and he calculates it according to ''E=mc²''. Please read (and understand!) his lecture.
*Please give a list of a few (or at least a single) experiment which contradicts the formula. This should be easy, as you stated that ''Undoubtedly many other experiments contradict the formula''. Oh, wait, you made that up...
*Please answer the questions 1 to 9: all the question are covered in Cockroft's lecture, so I'd be interested in your explanation!
[[User:AugustO|AugustO]] 11:32, 31 March 2012 (EDT)
:AugustO, if you cannot even spell Cockcroft's name properly, how can Andy take anything you say seriously? --[[User:AndreaM|AndreaM]] 22:03, 31 March 2012 (EDT)

== Move ==

Could you please move this article to [[Essay:E=mc²]]? Then I could ignore all the misleading and outright wrong statements in the first section! Thanks, [[User:AugustO|AugustO]] 15:57, 28 March 2012 (EDT)

== Experimental Facts ==

Aschlafly, on the one hand side, you state that ''no experiment distinguishes between "gravitational" and "inertial" mass'' - and that seems good enough for you. On the other hand side, you have a problem with the statement that E=mc² ''continues to be affirmed experimentally''. Do you spot the inconsistency? Indeed, I could write: ''the equivalence between inertial mass and gravitational mass has never been mathematically derived from first principles in classical mechanics, indeed, a rigorous proof of this equivalence is probably beyond the purview of classical theory.''

BTW, omitting the first part of the sentence ''"Leaving aside that it continues to be affirmed experimentally..."'' makes you look very disingenuous (even if you have good motives) to anyone who looks up the link to the abstract!

[[User:AugustO|AugustO]] 16:07, 28 March 2012 (EDT)

:It's hair-splitting jargon of doubtful significance. 99% of people know what mass is, and it's directly related to weight, not electrostatic energy.--[[User:Aschlafly|Andy Schlafly]] 16:38, 28 March 2012 (EDT)
::And the remaining percent are the physicists which draw such distinctions with good reason! [[User:AugustO|AugustO]]
:::Even more confusing is that the article states mass is a measure of inertia. Inertia is resistance to acceleration, and that has nothing to do with gravity at all. The article as it stands is simply inaccurate. --[[User:SamCoulter|SamCoulter]] 16:51, 28 March 2012 (EDT)

::::Aschlafly: ''....may not even have any justification in the paper''
::::Aschlafly, havn't you read the paper? Here is a part of the conclusion:
:::::''Einstein produced about 18 virtuoso derivations and demonstrations all aimed at establishing the mass-energy principle. We have shown that although each of them gave evidence for the applicability of E0 = mc² to a particular set of circumstances, no one derivation, or collection of them taken together, succeeded in providing a definitive proof of its complete generality. That should not be surprising because the same situation occurs, for example, with F = ma, which is a different kind of relation than E0 = mc². Even so, 300 years of successful theoretical work have not proven the correctness of F = ma. Indeed, relativity showed that this expression, one of the bedrocks of classical mechanics, holds only approximately.
::::Here is another excerpt, on mass, electromagnetism etc:
:::::''In the 19th century, a number of European physicists, including the leading theoretician of the time, Hendrik Lorentz, were working to establish that mass was, in whole or in part, electromagnetic. There were primarily two competing theories, one by Lorentz, the other by Max Abraham. Both agreed that depending on the relative direction of its velocity and acceleration, an “electron” a generic charged particle moving through the aether could manifest both transverse and longitudinal speed-dependent mass components. There was even experimental evidence that seemed to confirm as much. Electromagnetic theory was then at the center of physics.''
::::[[User:AugustO|AugustO]] 16:56, 28 March 2012 (EDT)

::::(May I add that I think one shouldn't make such fundamental statements as ''E=mc² has no meaning'', if one only skims a few abstracts! [[User:AugustO|AugustO]])

Aschlafly, maybe you have not the time (or the access) to read the actual papers - as you should when drawing conclusions. But perhaps you can take a look at [http://www.lbl.gov/abc/Basic.html Lawrence Berkeley National Laboratory's ABC of Nuclear Science] to refresh the basics?Even there, they use ''Einstein's famous equation...''... [[User:AugustO|AugustO]] 08:44, 29 March 2012 (EDT)

== ...purports to relate all matter to light ==

When I write that for iron I get:
::V [cm³] * 7.874 g/cm³ = M [g]
I don't relate the mass to 7.8474, but to the volume. So, similarly Einstein's equations says that mass is proportional to energy, not light. [[User:AugustO|AugustO]] 10:38, 29 March 2012 (EDT)
:But the constant applied in this case is the (square of the) speed of light! Are you saying that that is a coincidence? If so, why not just say "E=mc"?--[[User:CPalmer|CPalmer]] 10:57, 29 March 2012 (EDT)
::no, of course not, but we could write, e.g., Eε0 = m/μ0: the relationship is given between mass and energy... [[User:AugustO|AugustO]] 11:04, 29 March 2012 (EDT)
:::But the relationship itself is somehow connected to light. Or maybe, the relationship is connected with some third factor that also determines the speed of light.--[[User:CPalmer|CPalmer]] 11:58, 29 March 2012 (EDT)
::::yes, but the c² is a constant. Does the equation E/c²=m relate all energy to light? [[User:AugustO|AugustO]] 12:18, 29 March 2012 (EDT)
:::::Yes - the equation in any form relates mass, energy, and the speed of light. I think the article doesn't emphasise the light-energy relationship because it's the mass-energy relationship that appears absurd once the theory of relativity is discounted.--[[User:CPalmer|CPalmer]] 12:22, 29 March 2012 (EDT)

Even if you discount the theory of relativity, the experimental facts remain: in experiments where mass is deleted or created, this happens with the release or absorption of energy. And this energy is given by ≈8.99*1016m²/s² times the mass... [[User:AugustO|AugustO]] 13:31, 29 March 2012 (EDT)

== Misleading footnote ==

::(Your footnote about the units is bogus. SI units are not arbitrary, since eg Joules can be derived from other SI units including kilograms, metres and seconds. Therefore, the relationship to light ''is'' (purported to be) a natural one.)--[[User:CPalmer|CPalmer]] 11:00, 29 March 2012 (EDT)

Which footnote about units? [[User:AugustO|AugustO]] 11:04, 29 March 2012 (EDT)

Ah, I see, no, not ''my'' footnote. The text was inserted by [[User:GregG/RSS_6#Mon.2C_26_Mar_2012_18:05:11_GMT_.28edit_by_MihailD.29_2|MihailD]], and obviously the equation holds in other systems, too. [[User:AugustO|AugustO]] 11:10, 29 March 2012 (EDT)

I took out the main part of the footnote: it should be obvious that in a physical equation only compatible physical units can be used, and that otherwise conversion factors have to be introduced. But there is no problem, if we have c in feet/h, m in pounds, and E in pound*feet²/h²
[[User:AugustO|AugustO]] 11:30, 29 March 2012 (EDT)

:I see - my apologies. I thought you had added the footnote in order to try and make the point above. I agree that in any sensible unit system the equation will work (assuming the theory is right of course).--[[User:CPalmer|CPalmer]] 11:32, 29 March 2012 (EDT)

:Looks like [[User:MihailD|MihailD]] received a lifetime block for this and related edits, so he'll be unable to explain or justify his comments. --[[User:JasperK|JasperK]] 08:58, 30 March 2012 (EDT)

::That's a pity! [[User:AugustO|AugustO]] 09:38, 30 March 2012 (EDT)

== We will, we will, we will ==

Generally I enjoy the great contribution of SamHB. My only rub: the ''royal we'' - ''we will dispel'', ''we will show'', ''we don't do''. I don't think that this is the best way to phrase an encyclopedic article, and I'd like to see alternatives. For the moments, I just commented out some of the occurrences which in my opinion spoiled the fun of reading the article....

[[User:AugustO|AugustO]] 09:38, 30 March 2012 (EDT)

:It is a bit chatty. The first one could be rephrased "This article sets out to...". I have reworded two of the others, and the rest might possibly be omitted entirely.--[[User:CPalmer|CPalmer]] 09:44, 30 March 2012 (EDT)

== I don't understand... ==

Why you guys destroyed a wonderful original piece of work by Mr. Schlafly. There are hundreds of books and web sites that explain relativity, why did you feel the need to reproduce that content here? --[[User:AlejandroH|AlejandroH]] 16:18, 30 March 2012 (EDT)
:Perhaps because they are right and he is wrong? [[User:AugustO|AugustO]] 16:39, 30 March 2012 (EDT)

::Aschlafly, you still haven't answered my [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|reasonable questions abouts this subject]]. To be ignorant on a subject isn't that big a deal, but to willfully stay ignorant while lecturing about it, that is! [[User:AugustO|AugustO]] 17:32, 30 March 2012 (EDT)

BTW, the ''wonderful original piece of work'' was not destroyed - you find it embedded in the text. A blanket reversion of the work of a couple of editors should be a no-no, please give reasons for reverting at least for each paragraph! And answer the [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|questions!]] [[User:AugustO|AugustO]] 17:42, 30 March 2012 (EDT)

== Protection of the Article ==

Stated reason: ''(with reluctance, and repeated reversions; for now, post specific suggestions for edits on the talk page)''

Aschlafly, this must be one of these definitions of irony, as I asked for specific reasons for your deletions of material. Isn't that censorship? BTW, you still haven't replied to the [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|sections above]], and frankly I'm starting to call your knowledge on this matter in question! Ignorance is not always bliss!

And if you are not willing to address the points made above by various contributors, are you at least willing to read and answer to ''specific suggestions for edits on the talk page''? Or is this a sham to force-feed your view to the readers?

[[User:AugustO|AugustO]] 18:39, 30 March 2012 (EDT)

:The lead focus of the entry was converted into a parade of [[hearsay]] rather than logical analysis. Simply put, the entry had denigrated into the ''antithesis'' of the truth-seeking integrity expected of ''Conservapedia''.--[[User:Aschlafly|Andy Schlafly]] 19:41, 30 March 2012 (EDT)
::And what about the current entry? The fact is that E=mc2 is a perfectly valid equation demonstrating the equivalence of matter and energy and it has been thoroughly verified; the energy a piece of matter contains DOES equal its mass times ''c'' squared. This has been repeatedly demonstrated by experiments, which consistently show that the energy released by a reaction is equal within measuring limits to the overall mass lost. It's perfectly reasonable to reject any claim that this demonstrates the truth of moral relativism, atheism or anything else, but to criticise the equation itself as "meaningless" or "liberal claptrap" demonstrates no truth-seeking or integrity. E=mc2 is no more liberal than d=vt or 1+1=2. --[[User:SamCoulter|SamCoulter]] 19:53, 30 March 2012 (EDT)

:::The entry explains how nonsensical the formula is as a general principle -- and how it has never been derived as a matter of logic or demonstrated in any general, meaningful manner. Reliance on [[hearsay]] is not a serious alternative.--[[User:Aschlafly|Andy Schlafly]] 20:24, 30 March 2012 (EDT)

::::But it ''isn't'' a general principle. It's a mathematical expression of matter-energy equivalence and it's perfectly valid. Whether or not it's ever been derived as a matter of logic or not is irrelevant because it's been repeatedly demonstrated to be true in the most meaningful manner possible: if you turn matter into energy the amount of energy that comes out is always equal to the lost mass times ''c'' squared. --[[User:SamCoulter|SamCoulter]] 20:59, 30 March 2012 (EDT)

:::::You restate the claim as though its repetition would make it true. It doesn't. If someone gains one pound in weight, then it is preposterous for anyone to claim that his energy has thereby increased in proportion to the speed of light squared.--[[User:Aschlafly|Andy Schlafly]] 21:07, 30 March 2012 (EDT)

::::::Yes, it would be absolutely preposterous. In fact his energy would have increased by a number of foot-pounds equal to one pound times ''c''2 in feet per second. --[[User:SamCoulter|SamCoulter]] 21:11, 30 March 2012 (EDT)
:::::::To explain that further, his energy would have increased in proportion to his '''weight''', not to the speed of light. If a person who weighed 150lb gained 1lb the energy contained in their mass would increase from 1.4467x1017 ft lb to 1.4564x1017 ft lb. --[[User:SamCoulter|SamCoulter]] 21:39, 30 March 2012 (EDT)

::::::::The formula '''E=mc2''' does assert that his energy for a fixed gain in weight would increase in proportion to the speed of light squared and, as you say, that is preposterous.--[[User:Aschlafly|Andy Schlafly]] 23:37, 30 March 2012 (EDT)

:::::::::No, his energy for a fixed gain in weight will increase in proportion to his '''weight'''. In my example of a 150lb man gaining 1lb, his new energy content will be 0.6667% higher, '''as will his weight'''. ''c''2 is just a constant. --[[User:SamCoulter|SamCoulter]] 00:52, 31 March 2012 (EDT)
::::::::::Andy seems to imagine that this energy should be immediately available for sports or doing work around the house, and that we should all be superheroes after having eaten a bar of chocolate. This is, of course, not so. The energy is still locked up in the mass, and it would require nuclear or particle reactions to convert even small parts of it into useful forms of energy. --[[User:FrederickT3|FrederickT3]] 03:28, 31 March 2012 (EDT)
''The lead focus of the entry was converted into a parade of [[hearsay]] rather than logical analysis''. Then let's get factual: just answer a [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|few questions]]. Shouldn't be difficult, as you are so insightful. [[User:AugustO|AugustO]] 01:26, 31 March 2012 (EDT)

Of course this is hearsay - and so it should be. Conservapedia is an encyclopedia - a collection of established information cited from other sources. Hearsay may be inappropriate in court, but it is the lifeblood of an encyclopedia. Anything that is not 'hearsay' is personal opinion or original research, and should be reserved for articles prefixed 'Essay:'. --[[User:JasperK|JasperK]] 08:23, 1 April 2012 (EDT)

:Then again, heresy tends to be more reputable when it comes from a professional who has studied the issue for years, instead of a man who doesn't understand how food works. [[User:JackFerner|JackFerner]] 12:23, 2 April 2012 (EDT)

== Bare links ==

I noticed that [http://conservapedia.com/index.php?title=E%3Dmc%C2%B2&diff=971455&oldid=971446 this edit] removed publication information about the references. Personally, I think this information is useful for two reasons: it helps Conservapedia editors locate the references from other sources if (and when) the links go dead, and it helps who print out Conservapedia articles and wish to look up the references offline. (Of course, I'm not suggesting that the URLs be removed, but this could be in addition to the publication information). Of course, there may be perfectly good reasons for removing the publication information of which I am not aware, but I otherwise think that the publication information should be included again (and I plan to do this once the protection expires). [[User:GregG|GregG]] 23:17, 30 March 2012 (EDT)

:Great point. I retrieved and added many of the citations back. If I missed any then I'd be happy to add them also.--[[User:Aschlafly|Andy Schlafly]] 23:37, 30 March 2012 (EDT)

== Niels Bohr ==
Andy, for how often you rail against the Nobel Prize I'm surprised that you would try and use a former winner as an authority to support your misguided assertion. [[User:DennisR|DennisR]] 21:48, 1 April 2012 (EDT)

:Even a broken clock (like the Nobel Prize) gets it right every once in a while!--[[User:Aschlafly|Andy Schlafly]] 22:07, 1 April 2012 (EDT)

::''. As a general claim of equivalence between mass, energy and the speed of light, it was widely rejected at the time by the leading 20th century physicists, including Niels Bohr. '' Who were these physicists? And what said Niels Bohr? I couldn't find anything. In the famous ''Gedankenexperiment'' at Solvay, he accepted ''E=mc²! [[User:AugustO|AugustO]] 02:14, 2 April 2012 (EDT)

:::And of course it ''isn't'' a "general claim of equivalence between mass, energy and the speed of light." It's a statement of equivalence between energy and matter. Andy seems to be obsessed with the idea that light is involved somehow, and that conflicts with his rather odd idea that the Bible forbids a unified theory. I can only wonder what he'll do if science comes up with a unified theory. Probably deny that too. --[[User:SamCoulter|SamCoulter]] 02:16, 2 April 2012 (EDT)

Aschlafly, according to the information I found (Einstein and Bohr at the Solvay-conference), Niels Bohr accepted ''E=mc²''. So, a fact-tag was the only alternative to downright deleting the sentence: it allows you to bring up your sources! [[User:AugustO|AugustO]] 02:31, 2 April 2012 (EDT)
:I'd have been amazed if he hadn't. Bohr was on the British team for the Manhattan Project, and he wouldn't have been much use at nuclear weapon design if he didn't accept E=mc2. --[[User:SamCoulter|SamCoulter]] 02:41, 2 April 2012 (EDT)

::Aschlafly, you have a tendency to make up claims (''As a general claim of equivalence between mass, energy and the speed of light, it was widely rejected at the time by the leading 20th century physicists, including Niels Bohr. '', ''Undoubtedly many other experiments contradict the formula'', and, yes, '' "suddenly" or "at that time" is a nuance of the Greek ἰδού''). And when your bluff is called, you are miffed! [[User:AugustO|AugustO]] 03:00, 2 April 2012 (EDT)
::''Protected "E=mc²": insertion of a fact tag instead of finding and adding a reference.'' That is ridiculous: there is no way of ''finding and adding a reference'' for this made-up "''fact''"!
::It is, however, not very difficult to show that the ''fact'' was invented: just take a look into ''"Foundations of Quantum Physics I''", a book written by Niels Bohr and Jorgen Kalckar. Here Bohr uses what he calls ''Einstein's relation'' without any trepidation! [[User:AugustO|AugustO]] 09:00, 2 April 2012 (EDT)
:::Presumably, then, the relevant text should be changed to something like "it was widely rejected at the time by the leading 20th century physicists, although Niels Bohr later accepted it." and then add the citation. Or you could clarify with something like "the liberal Nobel Prizewinner Niels Bohr".--[[User:CPalmer|CPalmer]] 09:18, 2 April 2012 (EDT)
::::*There is no reason to think that there was a time at which Niels Bohr didn't accept it!
::::*Is there any source which shows that it was ''widely rejected at the time''? Of course, there was the [[Deutsche Physik]], but does this count?
::::*That said: the <nowiki>{{fact}}</nowiki> tag was absolutely appropriate.
::::[[User:AugustO|AugustO]] 09:44, 2 April 2012 (EDT)

:::::You make some valid points as the online evidence is remarkably scant, even though the disagreement between Bohr and Einstein is well-known. This may be a (rare) example where the internet is less adequate than books. I did add an explanatory footnote and the protection to the page should be expiring soon, if not already.--[[User:Aschlafly|Andy Schlafly]] 10:22, 2 April 2012 (EDT)

*Einstein disagreed with Bohr regarding quantum mechanics. Could you provide a source that Bohr disagreed with Einstein on the theory of relativity? I can't find one!
*As I said, the <nowiki>{{fact}}</nowiki> tag was absolutely appropriate, and I'll reinsert it, as I don't think that there are any sources to back-up your claim.
*Furthermore, I have difficulties to believe that Lord Rutherford had problems with ''E=mc²'', he seemed to appreciate the liquid-drop-model of Gamov, Bohr, et al.
*''a general claim of equivalence between mass, energy and the speed of light'': no one claims that the '''three''' are equivalent!
[[User:AugustO|AugustO]] 11:22, 2 April 2012 (EDT)

== First sentence ==

I've changed the introduction to something a bit more encyclopaedic. Please don't revert without discussing it first. Thanks. --[[User:SamCoulter|SamCoulter]] 16:28, 2 April 2012 (EDT)

== Political Pressure ==

''Political pressure has since made it impossible for anyone pursuing an academic career in science to even question the validity of this nonsensical equation''

More likely the fact that similar experiments as the one Cockcroft and Walton are performed by undergraduates in each department teaching physics around the world! [[User:AugustO|AugustO]] 02:30, 3 April 2012 (EDT)

:No, that would not explain why it "is impossible for anyone pursuing an academic career in science to even question the validity of" E=mc2. Even if you think the formula is somehow true, surely you do not deny the political pressure in academia against anyone who might consider questioning it.--[[User:Aschlafly|Andy Schlafly]] 10:37, 3 April 2012 (EDT)
::It's entirely possible for someone who questions the validity of E=mc2 to pursue a career in science; scientists are encouraged to question the validity ''everything''. However if they ''deny'' the validity of E=mc2 then a scientific career is indeed off-limits to them, for the same reason as it's off-limits to someone who denies that 1+1=2. The fact is, E=mc2. It's been verified time and time again. --[[User:SamCoulter|SamCoulter]] 18:44, 3 April 2012 (EDT)

To talk about political pressure in this context is ridiculous. The conversion of Mass to Energy and vice versa and the validity of E=mc2 has been demonstrated experimentally so often(an early example is given in the main page) that to deny that the equation describes observed nature flies in the face of observation and is thus unscientific. To question its validity without hard experimental evidence or a sound theoretical argument (neither of which has been demonstrated) would simply be a matter of scientific (in)competance.[[User:Jloveday|Jloveday]] 15:16, 3 April 2012 (EDT)

:*Aschlafly, if you argue against ''E=mc²'' out of a position of (willful) ignorance, you won't be taken seriously. Unfortunately this is what you are doing, as your (non-) answer [[Talk:E=mc²#A few questions for Aschlafly regarding the experiment of Cockroft and Walton|above]] is showing.
:*Criticism of ''E=mc²'' on ideological grounds just doesn't work, as the adherents of the [[Deutsche Physik]] found out in the early 1940s.
:*But obviously, the theory is under constant discussion, as is the concept of energy or mass.
:[[User:AugustO|AugustO]] 18:34, 3 April 2012 (EDT)

== Matter-light relationship ==

Mr. Schafly, I think you are misunderstanding the nature of the <math>E=mc^2</math> relationship. To illustrate, I will give an example.

Suppose we have a map where 1 inch of distance on the map corresponds to 5 miles actual distance. If points A and B are located 2.5 inches apart on the map, we can compute the actual distance between them as follows:
:<math>2.5 \textrm{ map\,in} \cdot \frac{5 \textrm{ mi}}{\textrm{map\,in}} = 12.5 \textrm{ mi}</math>
In general, if the map distance between two points is <math>d</math> and the actual distance between the points is <math>D</math>, then the following formula is satisfied:
:<math>D = dc</math>
where <math>c</math> is the conversion factor <math>\frac{5 \textrm{ mi}}{\textrm{map\,in}}</math>. The equation above does not relate distance to five or map distance to quintessence. Rather, it posits a direct relationship (or equivalence) between the map distance and the actual distance, related by a conversion factor.

Likewise, <math>E=mc^2</math> posits a direct relationship between mass and energy. It does not relate mass to the speed of light (or light itself), nor does the equation related light to energy. Rather, <math>c^2</math> is a conversion factor, just like the <math>c</math> was in our equation for computing actual distances from map distances. I hope this helps explain why some editors have concern with your statement of the relationship posited by <math>E=mc^2</math>. [[User:GregG|GregG]] 00:19, 4 April 2012 (EDT)

:But Energy and mass have known meanings in other contexts, unlike the distances (in inches) on the map page in your example. If Energy or mass were being redefined by E=mc2, then I think your analogy would work. But people are not defending E=mc2 by saying it entails a redefinition of Energy or mass.--[[User:Aschlafly|Andy Schlafly]] 01:00, 4 April 2012 (EDT)
::The equation postulates how mass and energy can be interchanged while conserving the total amount of mass energy. For example, according to the equation, a nuclear reaction that causes 1.0 kg of mass to be lost will produce 9.0 x 1016 J energy. The amount of energy produced ''by the loss of mass'' is proportional to the mass lost. It is the same sort of equivalence between the number of pounds you get at a currency exchange and the number of dollars you pay (which, come to think of it, is probably an even better analogy). [[User:GregG|GregG]] 01:13, 4 April 2012 (EDT)
:::Energy and mass have known meanings in THIS context! The equation tells us how much energy will be liberated by losing a set amount of mass, or how much energy (for example hard gamma rays) is required to create a set amount of mass. It is a valid equation. It doesn't matter ''what'' objections anyone has to it based on principle or logic; it's been tested and it's correct. This is getting pretty frustrating. --[[User:SamCoulter|SamCoulter]] 01:56, 4 April 2012 (EDT)

Ex-Christians, self-esteem and suicide

2012-04-03T23:34:18Z

SamCoulter: Undo revision 973514 by Reginaldbarnster545 (talk)Childish vandalism. Why don't you fix the article instead?

There are preliminary studies indicating that individuals who reject [[Christianity]] in Western cultures have lower self-esteem than the Christian population.<ref>http://atheistwatch.blogspot.com/2010/10/rejection-of-christianity-and-self.html</ref><ref>http://atheistwatch.blogspot.com/2010/10/atheists-and-self-esteem-part-2.html</ref> There are also studies indicating that lower self-esteem is associated with suicidality.<ref>http://www.ncbi.nlm.nih.gov/pubmed/21190929</ref><ref>http://www.ncbi.nlm.nih.gov/pubmed/20602903</ref> The [[Atheist Population|atheist population]] has a higher rate of suicide that the theist population (see: [[Atheism and depression]] and [[Atheism and suicide]]).
[[File:Richard Dawkins pic.jpg|alt=Richard Dawkins|thumbnail|260px|right|[[Richard Dawkins]] ]]
[[Richard Dawkins]]' book ''The God Delusion'' along with a [[community college]] biology class, have been linked to the tragic suicide of Jesse Kilgore.<ref>http://worldnetdaily.com/index.php?fa=PAGE.view&pageId=81459</ref> Kilgore had several discussions with friends and relatives in which he made it clear Dawkins' book had destroyed his belief in God. This loss of faith is considered the cause of his suicide which is not surprising given that there is evidence which suggest that [[Atheism and suicide|atheism can be a causal factor for suicide for some individuals]].<ref>http://www.adherents.com/misc/religion_suicide.html</ref><ref>http://ajp.psychiatryonline.org/cgi/content/abstract/161/12/2303</ref><ref>http://www.adherents.com/misc/religion_suicide.html</ref><ref>[http://query.nytimes.com/gst/abstract.html?res=9507E2DC1131E033A25754C1A96F9C94659ED7CF NY Times, September 17, 1894, ATHEISM A CAUSE OF SUICIDE.; Dr. MacArthur Preaches on the Sin and Cowardice of Self-Destruction]</ref>

Jesse's father is quoted as saying "If my son was a professing [[homosexuality|homosexual]], and a professor challenged him to read [a book called] ''Preventing Homosexuality''… If my son was gay and [the book] made him feel bad, hopeless, and he killed himself, and that came out in the press, there would be an outcry. He would have been a victim of a hate crime and the professor would have been forced to undergo sensitivity training, and there may have even been a wrongful death lawsuit. But because he's a [[Christianity|Christian]], I don't even get a return telephone call."

Jesse's blog remains online after his death.<ref>http://users.newblog.com/Jkrapture/?post_id=17727</ref>

==See also==
*[[Resources for leaving atheism and becoming a Christian]]
*[[Christian apologetics|Evidence for Christianity]]
*[[Atheism and Mental and Physical Health]]
*[[Psychology, obesity, religiosity and atheism]]
*[[Irreligion and superstition]]
*[[Atheism, gender and suicide]]
*[[Atheism, marriage and suicide]]

== External links==
*[http://creation.com/suicidal-atheist-converts-to-christ A suicidal atheist converts to Christ]
*[http://www.youtube.com/watch?v=F6wQRzor6Vc Atheists emailing me saying they've left atheism for Jesus Christ] - [[YouTube]] video
*[http://www.youtube.com/watch?v=tvxSsYRPIWM Ex-atheist conquers Atheist Experience show by exposing the madness of atheism]
*[http://www.adherents.com/misc/religion_suicide.html Religious Affiliation, Atheism and Suicide]

'''Video on atheism and depression:'''

*[http://www.youtube.com/watch?v=jv3TFg9SJb4 Atheism: Unyielding Despair]

== Notes ==
{{reflist|2}}

[[Category:Atheism]]
[[Category:Sociology]]

Talk:E=mc²

2012-04-03T22:44:54Z

SamCoulter: /* Political Pressure */

==I'm Finding This a Little Hard to Understand==
First off, E = mc2 describing a relationship between energy and matter is only one corollary. It is also part of a well known problem in chemistry... Or is isotopic mass not less than the sum of it's parts? The equation itself HAS been derived from the Theory of Relativity, and is a direct consequence of the energy momentum four vector for an object with 0-momentum. The quote you provide from the paper states that the theory is not enough for a rigorous PROOF, but it never tries to deny the derivability of the equation. Derivation and proof are two entirely different things.

==This Article Could Use Sources or Better Explanation==
Wow. Classic Andy. Unsourced statements supposedly contradicting well-established theories of physics. No real proof other than "the Bible says it's not true," even though this is an extremely uncommon interpretation Genesis. --[[User:AndreaM|AndreaM]] 01:06, 25 March 2012 (EDT)

:It's a start for now, and will expand over time. That's how wikis work.--[[User:Aschlafly|Andy Schlafly]] 01:18, 25 March 2012 (EDT)
::Doesn't it relate energy to mass? The speed of light is just a constant here. [[User:IanR|IanR]] 02:22, 25 March 2012 (EDT)

== Humbug ==

The phrase ''meaningless, almost nonsensical, statement '' (as used in the article) fits the first paragraph to a t.

Aschlafly, please try to refute the explanation of the experiments of John Cockroft and Ernest Walton, which is accepted generally under physicists. And try to give some sources - or if not, some of your own calculations!

If not, just erase the first section.

[[User:AugustO|AugustO]] 11:23, 25 March 2012 (EDT)

== Nobel Lecture ==

I took out the link to the Nobel lecture, it can be found in the short summary. But be aware that John Cockroft is using the dreaded formula with ease (but without stating so explicitly - why should he, it's already generally accepted!) An astute reader, who not only searches for the formula finds e.g., the formulation:

:'''This energy could be provided by a diminution of mass of 0.0184 mass units.'''

Indeed, these are the ≈ 17MeV!
[[User:AugustO|AugustO]] 11:51, 25 March 2012 (EDT)

==Irrelevant claims==
Are these claims of so called "experimental verification" valid or useful? If you look at enough so-called science you can find people claiming anything. --[[User:DavidEdwards|DavidEdwards]] 12:59, 25 March 2012 (EDT)
:''you can find people claiming anything'' Indeed - and that's why there is a difference between the unsubstantiated claims in the first section, and the actual experiments in the following paragraphs. If you have a good explanation of the outcome of these experiments (some math would be nice), feel free to add your personal ''claim''.
:[[User:AugustO|AugustO]] 13:03, 25 March 2012 (EDT)
::Why do you feel that I need to do that? I understand that you may wish to believe relativity is true, but that is no reason to impose your personal beliefs on others.--[[User:DavidEdwards|DavidEdwards]] 13:40, 25 March 2012 (EDT)
:::Thinking that all claims have the same validity seems not a very conservative position. I don't expect you to accept my personal beliefs, but there is a tendency in physics that the claims which are backed up by those willing to do the experiments and the maths have a greater following than random insights. [[User:AugustO|AugustO]] 13:47, 25 March 2012 (EDT)
::::I don't understand why your personal beliefs are even included in the article.--[[User:DavidEdwards|DavidEdwards]] 13:58, 25 March 2012 (EDT)
:::::*Because they are bolstered by experiments...
:::::*...and they aren't just my beliefs - in fact it will be very hard to find a physicist who doesn't share them. And that's something which shouldn't be easy to ignore in an article on a physical subject.
:::::[[User:AugustO|AugustO]] 14:02, 25 March 2012 (EDT)
::::::If science is your religion then you will find scientists who share your views. I still don't see why they should be hosted here. The introduction makes the Biblical position clear.--[[User:DavidEdwards|DavidEdwards]] 14:07, 25 March 2012 (EDT)
:::::::Religion is my religion, science is my hobby. And just because there is one single interpretation of a few verses of Genesis out there which you think to contradict the experiments of the physicists doesn't shatter my religious beliefs nor my trust in physics. [[User:AugustO|AugustO]] 14:35, 25 March 2012 (EDT)
::::::::Then why do you insist with this anti-religious pseudoscience?--[[User:DavidEdwards|DavidEdwards]] 14:41, 25 March 2012 (EDT)
← Now you have intrigued me: what's your definition of pseudoscience? [[User:AugustO|AugustO]] 14:45, 25 March 2012 (EDT)

Pssst! DavidEdwards! You're trying waaaaay too hard. --[[User:JoshuaB|JoshuaB]] 21:20, 25 March 2012 (EDT)
:Too hard about what?
:As far as the pseudoscience question is concerned - "science" which is used to promote a worldview which has no basis in moral reality is pseudoscience. Science which is designed to suggest that morality is relative clearly falls into this category.--[[User:DavidEdwards|DavidEdwards]] 18:40, 26 March 2012 (EDT)

==Question==
This snipet of sentence appears in the introduction: "...''a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory.''" Let's compare that to the entire sentence it was lifted from: "'''''Leaving aside that it continues to be affirmed experimentally,''' a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory.''" One can't help but notice that the part of the sentence that states that the theory has been observed to be valid in real world experimentation, has been surgically removed. Why is this? Is it because it stands in contradiction to the claim the lead author of this article is trying to promulgate? --[[User:JoshuaB|JoshuaB]] 20:55, 25 March 2012 (EDT)

:Peer-reviewed journals won't publish a criticism of relativity. That's obvious. Although I don't have a copy of the full paper, I doubt it attempts to fully support the [[hearsay]] that was excluded, and I would not be surprised if it was included simply to safeguard against complaints for what followed. It adds nothing to the basic point that follows and is quoted here.--[[User:Aschlafly|Andy Schlafly]] 21:19, 25 March 2012 (EDT)

::Why won't a peer-reviewed journal publish a criticism of SR or GR? Liberal conspiracy? Also, do you not accept that mass and energy are interchangeable or is it a problem with this specific equation? --[[User:JoshuaB|JoshuaB]] 21:24, 25 March 2012 (EDT)

:::JoshuaB, do you accept the possibility that the [[Theory of Relativity]] may be false, and would you approve a well-written paper that criticized it? It's a simple "yes" or "no" question.--[[User:Aschlafly|Andy Schlafly]] 21:55, 25 March 2012 (EDT)

::::Yes. We already know the Theory of Relativity is an incomplete model of our universe. So yes, the theory may be "false", but the one that takes it's place will most likely have many of the same properties. Secondly, would I approve of a "well-written paper that criticized it"? I don't know what that means. I'm not a physicist, so I don't see what difference my "approval" of said paper would make. Now that I've been so kind as to answer your questions, would you return the courtesy and answer the ones I posted above? --[[User:JoshuaB|JoshuaB]] 22:35, 25 March 2012 (EDT)

:::::The qualifications on your answer render it almost meaningless. I'm not asking whether your approval of a paper would make a difference, or your opinion about whether you think the replacement of the [[Theory of Relativity]] will "most likely" be another theory of relativity. The question was simple and straightforward, referring to a paper critical of the theory of relativity without any appeasement to those who insist on believing in it. An unqualified answer is requested.

:::::Also, did you ever answer my simple question on [[Talk:Main Page]] about how much time you've spent reading the [[Bible]] this month?--[[User:Aschlafly|Andy Schlafly]] 22:50, 25 March 2012 (EDT)

::::::Come off it Schlafly. This article is not about my Bible reading, is it? No. Does my opinion of the publishing criteria of physics academia have any bearing on the assertions you are trying make? No. Again: Do you not accept that mass and energy are interchangeable or is it a problem with this specific equation? --[[User:JoshuaB|JoshuaB]] 23:11, 25 March 2012 (EDT)

:::Andy, do you accept the possibility that the Theory of Relativity may be correct, and would you approve a well-written paper or book that supported it? It's a simple "yes" or "no" question. --[[User:FrederickT3|FrederickT3]] 03:28, 26 March 2012 (EDT)

== Some points ==

*''Misplaced claims of experimental verification'': if you want to put on the disclaimer ''misplaced'', please explain the results of the experiments in another way.
*''Why won't a peer-reviewed journal publish a criticism of SR or GR?'' But they do: remember the neutrino thing? Or the papers of H. Ives? In fact the first event has shown that especially the publication of experiments (seemingly) violating currently accepted theories gets attention!
*Taking only the second half of ''"Leaving aside that it continues to be affirmed experimentally, a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory."'' makes you looking deceptive. Take the whole sentence and try to explain the motivation of the first half. Otherwise anyone who looks the quote up will suspect an ulterior motive!
*The whole first section is a train wreck.
*''[[Mass]] is a measure of an object's inertia, and is directly related to the forces of [[gravity]].'' Only when you accept the general theory of relativity it is, otherwise inertial mass and gravitational mass are quite different animals.
[[User:AugustO|AugustO]] 02:46, 26 March 2012 (EDT)

::I have attempted to clarify the last point on the [[Mass]] page, and also removed the fact template from the first paragraph, since the explanation is given later on. As it stood, the "citation needed" banners following important points tended to undercut the authority of the article.--[[User:CPalmer|CPalmer]] 08:29, 26 March 2012 (EDT)
::The problem is not a confusion of weight and mass, but the conflation of gravitational and inertial mass. In the classical theory, there is no reason why both should be the same, it's just an experimental fact.
::So, I'm sorry, your new entry didn't help.
::[[User:AugustO|AugustO]] 08:40, 26 March 2012 (EDT)

:::But they always are the same, aren't they? I don't see why knowing or not knowing the reason (yet) has any bearing on the question.--[[User:CPalmer|CPalmer]] 08:43, 26 March 2012 (EDT)

::::Aschlafly writes: ''Mass is a measure of an object's inertia, and is directly related to the forces of gravity. In contrast, the intrinsic energy of an object (such as an atom) is a function of electrostatic charge and other non-inertial forces, having nothing to do with gravity.''
::::E=mc² isn't about gravity, to invoke it here is a deflection. [[User:AugustO|AugustO]] 08:49, 26 March 2012 (EDT)

::::: OK. But bear in mind that this page clearly exists to provide a counterweight to certain liberal views. To do that, clarity of message is needed, and a "citation needed" banner has a deflating effect on the strength of that clarity. So perhaps you could suggest a wording that might be acceptable without the "citation needed" bit?--[[User:CPalmer|CPalmer]] 09:03, 26 March 2012 (EDT)

No, I can't. Frankly, I don't see the clarity in this piece: at the moment, it is still sadly missing. So I hope, that Aschlafly taking care of the fact-tags (other then trimming them away) will add to this clarity! [[User:AugustO|AugustO]] 09:13, 26 March 2012 (EDT)

== Examples of how meaningless E=mc² is: descriptions for the layman ==

Try to explain a complicated formula in 1-2min, then have a single sentence of this soundbit taken out. You can bet that this may sound meaningless. That's no fault of the formula. I'll change the title back. [[User:AugustO|AugustO]] 09:58, 26 March 2012 (EDT)

:The quotes (and others that could be added) illustrate how meaningless the formula is.--[[User:Aschlafly|Andy Schlafly]] 10:02, 26 March 2012 (EDT)
::The quotes illustrate how difficult it is to explain the concept to a layman. Take a look [http://www.pbs.org/wgbh/nova/einstein/expe-text.html here], where you can find the quotes in context. [[User:AugustO|AugustO]] 10:16, 26 March 2012 (EDT)

:::The quotes were solicited to describe the meaning of the equation to laymen, not to illustrate how difficult that is. The difficulty arises from the meaningless nature of the equation.--[[User:Aschlafly|Andy Schlafly]] 11:01, 26 March 2012 (EDT)
::::Actually the meaning of the equation is very clear: the total energy contained in matter is its mass multiplied by the speed of light in a vaccum squared. Experiment after experiment, and nuclear reactor after nuclear reactor, has clearly demonstrated that the total energy released by a reaction is the lost mass multiplied by c2. Therefore whether the theories of relativity are true or not, E=mc2 is true. Equally, even if classical Newtonian mechanics was false, the kinetic energy of a moving mass would still be accurately described by Ek=1/2mv2. --[[User:SamCoulter|SamCoulter]] 16:34, 28 March 2012 (EDT)
::::Indeed. Internet quotes are really not very useful. A skilled researcher can always find someone saying something to justify their position however bizarre or immoral. This is a typical weakness (and response!) of those who have no real moral or religious basis for their convictions. --[[User:DavidEdwards|DavidEdwards]] 19:04, 26 March 2012 (EDT)
::::These quotes are absolutely meaningless. It looks like you took random sentences from the PBS article and then inserted them into the article as if they had any real significance. This is made even more moot when you consider the fact that the article claims that "Ten top physicists were asked to describe in laymen's terms E=mc²" and then you go on to quote three. Not to mention, most of the quotes aren't actually explaining what the equation means - a basic understanding of algebra and what the symbols mean is sufficient to understand its basic meaning - but rather what it entails, its implications. Tim Halpin-Healy's quote I think is better than taking some random sentences and then implying that they mean that physicists don't know what E=mc² means. --[[User:Tyg13|Tyg13]] 15:58, 1 April 2012 (EDT)

:::::The problem is that '''E=m2does not meaning anythimg that makes sense. Anyone is welcome to try to explain it here. Eating a pound of cake does not cause one's energy to increase by the speed of light squared.--[[User:Aschlafly|Andy Schlafly]] 16:06, 1 April 2012 (EDT)
::::::No, it doesn't. It causes your energy to increase by a number of foot-pounds equal to '''one pound''' times the speed of light squared. I've explained this to you already and it isn't difficult. --[[User:SamCoulter|SamCoulter]] 16:23, 1 April 2012 (EDT)
:At any rate, eating a pound of cake, is not nuclear physics, it is chemistry, where your cells digest and utilize the sugars within. Protiens are also converted into sugar.[[User:JonM|JonM]] 18:28, 1 April 2012 (EDT)

== Aschlafly, could you give us... ==

... your interpretation of the results of the experiment by Cockroft and Walton? Cockroft describes in his Nobel Lecture how the kinetic energy of the alpha-particles could be provided by ''diminution of mass of 0.0184 mass
units.'' (p. 170). Please take into account that this isn't about energy in form of electromagnetic waves!

If you don't address the results of the actual experiments, all your claims are just meaningless verbiage.
[[User:AugustO|AugustO]] 10:39, 26 March 2012 (EDT)

:Cockcroft (please spell his name correctly) does not even cite E=mc2 in his Nobel lecture.--[[User:Aschlafly|Andy Schlafly]] 11:01, 26 March 2012 (EDT)
::You don't think that it is ''implied'' by the quote that AugustO provided? --[[User:FrederickT3|FrederickT3]] 11:10, 26 March 2012 (EDT)

:::No, I don't. E=mc2 is supposedly a general truth of universal applicability. The case for it, if true, needs to be far stronger than what is quoted above.--[[User:Aschlafly|Andy Schlafly]] 11:15, 26 March 2012 (EDT)

From the lecture: ''It was obvious then that lithium was being disintegrated into two α-particles with a total energy release of 17.2 million volts. This energy could be provided by a diminution of mass of 0.0184 mass
units.''

Aschlafly, your ignorance is showing:
17.2 MeV /c² = 1.602*10-19kg m²/s² *17.2 *109/(3*108 m/s)² = 3.0616 * 10-29kg = 0.0184 amu

In fact as this is such a ''general truth of universal applicability'', J. Cockroft could take it for granted that his scientifically literate audience would be able to make this calculation.
[[User:AugustO|AugustO]] 11:26, 26 March 2012 (EDT)

:::One question, though: We have four protons and four neutrons on the left hand side of the equation, and four protons and four neutrons on the right hand side. So why the difference in mass?
:::Also, forgive my ignorance, but why is the 'energy' measured in volts? Volts are not a measure of energy.--[[User:CPalmer|CPalmer]] 11:40, 26 March 2012 (EDT)

*Bainbridge measured the mass of 7Li directly, using mass spectrometry.
*Indeed, three protons and four neutrons weight less than a 7Li - kernel
*Energy is measured in this cases in [[Electron-Volts]]. One electron volt is the energy of an electron which passed through a potential of 1 Volt.
[[User:AugustO|AugustO]] 11:54, 26 March 2012 (EDT)
:AugustO, please contribute something substantive instead of talking up a storm. Thanks.--[[User:JamesWilson|James Wilson]] 11:56, 26 March 2012 (EDT)
:::James Wilson, please don't interfere in interesting and substantive discussions. Thank you! [[User:Baobab|Baobab]] 12:12, 26 March 2012 (EDT)
::::"Baobab", please state what substance is coming out of this conversation. You have had a history of engaging in hefty talk. Please start contributing. I have had some great insights contributing in a few articles today and will continue to do so. Many thanks for your future contributions.--[[User:JamesWilson|James Wilson]] 12:47, 26 March 2012 (EDT)
:::::"James Wilson", AugustO is clarifying things and giving us some great insights, as CPalmer's latest reply shows. Discussions will often lead to better articles, which is why your interference was totally uncalled for. I guess your only motive was to defend Mr. Schlafly, but he can take care of himself and really doesn't need your help. Regards, [[User:Baobab|Baobab]] 13:30, 26 March 2012 (EDT)
::Thanks, AugustO. Relativity or no relativity, I am learning a lot from this discussion.--[[User:CPalmer|CPalmer]] 12:00, 26 March 2012 (EDT)
:::You are posing excellent questions! Indeed it should be of interest for Aschlafly, too:
:::'''Aschlafly, two protons (1.0073amu) and two neutrons (1.0087amu) have a combined mass of 4.0320 amu. An alpha-particle - existing from two protons and two neutrons - has a mass of 4.0015 amu. How do you explain this diminution of mass?
:::[[User:AugustO|AugustO]] 13:42, 26 March 2012 (EDT)
::::What real evidence do you have that these particles even exist? No doubt you've read it in a book or some "qualified person" has said it is true. In reality you accept these things on the word of somebody else - in other words your belief in the existence of these particles is a matter of scientific faith in something which you have no personal knowledge. There is obviously no problem with believing things on faith, but please don't pretend it's "true because science says it's true". Christians get their real truth from a higher authority.--[[User:DavidEdwards|DavidEdwards]] 18:49, 26 March 2012 (EDT)
:::::I find Mr O's position to be rather odd. He insists that Mr Schlafly - and only Mr Schlafly answers his questions. Yet at the same time Mr O steadfastly ignores comments specifically directed at him.--[[User:DavidEdwards|DavidEdwards]] 16:11, 28 March 2012 (EDT)
::::::If you're referring to your question about how he knows that protons and neutrons really exist, I suspect he thought it wasn't worth answering. I tend to agree. --[[User:SamCoulter|SamCoulter]] 16:15, 28 March 2012 (EDT)

@DavidEdwards: Sorry, [[User:DavidEdwards|DavidEdwards]], I didn't want to ignore you. I hadn't caught up after the databank mishap, I'm afraid.
So, to answer your questions: At school, we performed a couple experiments -there were teltron tubes, the Millikan the photo-electric effect, the Millikan Oil Drop experiment, de Broglie's electron diffraction experiments, etc. These experiments confirmed my persuasion that the electrons, protons and neutrons are physically real entities. The proposed theories explained these effects - and sitting in front of a computer, I'm surprised that you aren't willing to accept the theories behind semi-conductors. [[User:AugustO|AugustO]] 16:25, 28 March 2012 (EDT)
@SamCoulter: There is some truth in your statement, too: it's like asking a priest: ''let's talk about your religion without mentioning Jesus''... [[User:AugustO|AugustO]] 16:28, 28 March 2012 (EDT)

== Restoration ==

I could restore this page to the last version which I had edited. I don't know whether there were more entries. This should help to restore the article: perhaps one positive effect could be that Aschlafly marvels about the questions in the previous section for a while and rethinks his position! [[User:AugustO|AugustO]] 18:36, 26 March 2012 (EDT)

== Instead of the source - tag ==

*''E=mc² is a meaningless, almost nonsensical, statement in physics that purports to relate all matter to light.''
It relates matter to energy, the square of the speed of light is just the conversation factor
*''In fact, no theory has successfully unified the laws governing mass (i.e., gravity) with the laws governing light (i.e., electromagnetism).''
It isn't about gravitational mass, but about inertial mass. To identify both means to invoke the General Theory of Relativity
* ''Simply put, E=mc² is liberal claptrap. ''
How so? It works!
* ''Biblical Scientific Foreknowledge predicts that a unified theory of all the laws of physics is impossible, because light and matter were created at different times, in different ways, as described in the Book of Genesis.''
So, physicists should just give up looking for it? I dare to say that there are many Christian physicists - they may just not follow your special interpretation of Genesis!
[[User:AugustO|AugustO]] 09:29, 27 March 2012 (EDT)

== A few questions for Aschlafly regarding the experiment of Cockroft and Walton ==

I'd appreciate an answer by Aschlafly (and him alone) to the following questions:

'''1.''' Do you accept that the mass of the Lithium-kernel (7Li), of alpha-particles (4He) and of protons (1H) can be measured fairly accurately, as these are charged particles?

'''2.''' Do you accept the measurements for the mass of the particles as used by Cockroft and Walton, i.e.
:::{|
!particle
!mass
|-
|1H||1.0072 amu
|-
|4He||4.0011 amu
|-
|7Li||7.0130 amu
|}
If not, which values do you think to be right?

'''3.''' Do you agree that before the reaction the mass of the particles involved was 8.0202 amu?

'''4.''' Do you agree that after the reaction the mass of the particles involved is 8.00220 amu?

'''5.''' Do you agree that there is a mass decrease of 0.0180 amu?

'''6.''' Before the experiment, the Li was at rest and the proton had a kinetic energy of less than 1MeV. Do you accept these values?

'''7.''' After the experiment, a pair of alpha-particles was observed, both having an kinetic energy of 8.6MeV. Do you think that this value is correct?

'''8.''' Can you tell me where the mass went? Can you tell me where the energy came from?

'''9.''' If your answer to question 8. is ''no'' in both accounts, than my answer is that there is a theory which explains the conversion of mass to energy, even if you don't like it!

As this theory works for this experiment, and for all the other fissions and fusions, it isn't liberal claptrap, but a meaningful theory. And you can't blame physicists for using it! Of course, you can blame journalist to abuse the formula - but this isn't the result of ''liberal physics'', but of ''bad reporting'', as an abuse of the dictum ''1+1=2'' doesn't reflect badly on number-theorists, but only on the person misattributing it.

Thanks, [[User:AugustO|AugustO]] 08:04, 28 March 2012 (EDT)

:AugustO, chemical reactions can release energy, typically based not on the size of their mass but on the electrostatic energy prior to the reaction. Cockcroft's own paper accepting the Nobel Prize does not claim that his work proved that '''''E=mc2'''''. Undoubtedly many other experiments contradict the formula, or else we'd have seen far more claims of experimental verification of it.--[[User:Aschlafly|Andy Schlafly]] 11:20, 31 March 2012 (EDT)

Aschlafly, you haven't answered any of the questions above! Instead you are talking about something completely different:
*We are not talking about a ''chemical'' reaction! You should know the difference.
*Cockroft claims that the energy comes from the loss of mass - and he calculates it according to ''E=mc²''. Please read (and understand!) his lecture.
*Please give a list of a few (or at least a single) experiment which contradicts the formula. This should be easy, as you stated that ''Undoubtedly many other experiments contradict the formula''. Oh, wait, you made that up...
*Please answer the questions 1 to 9: all the question are covered in Cockroft's lecture, so I'd be interested in your explanation!
[[User:AugustO|AugustO]] 11:32, 31 March 2012 (EDT)
:AugustO, if you cannot even spell Cockcroft's name properly, how can Andy take anything you say seriously? --[[User:AndreaM|AndreaM]] 22:03, 31 March 2012 (EDT)

== Move ==

Could you please move this article to [[Essay:E=mc²]]? Then I could ignore all the misleading and outright wrong statements in the first section! Thanks, [[User:AugustO|AugustO]] 15:57, 28 March 2012 (EDT)

== Experimental Facts ==

Aschlafly, on the one hand side, you state that ''no experiment distinguishes between "gravitational" and "inertial" mass'' - and that seems good enough for you. On the other hand side, you have a problem with the statement that E=mc² ''continues to be affirmed experimentally''. Do you spot the inconsistency? Indeed, I could write: ''the equivalence between inertial mass and gravitational mass has never been mathematically derived from first principles in classical mechanics, indeed, a rigorous proof of this equivalence is probably beyond the purview of classical theory.''

BTW, omitting the first part of the sentence ''"Leaving aside that it continues to be affirmed experimentally..."'' makes you look very disingenuous (even if you have good motives) to anyone who looks up the link to the abstract!

[[User:AugustO|AugustO]] 16:07, 28 March 2012 (EDT)

:It's hair-splitting jargon of doubtful significance. 99% of people know what mass is, and it's directly related to weight, not electrostatic energy.--[[User:Aschlafly|Andy Schlafly]] 16:38, 28 March 2012 (EDT)
::And the remaining percent are the physicists which draw such distinctions with good reason! [[User:AugustO|AugustO]]
:::Even more confusing is that the article states mass is a measure of inertia. Inertia is resistance to acceleration, and that has nothing to do with gravity at all. The article as it stands is simply inaccurate. --[[User:SamCoulter|SamCoulter]] 16:51, 28 March 2012 (EDT)

::::Aschlafly: ''....may not even have any justification in the paper''
::::Aschlafly, havn't you read the paper? Here is a part of the conclusion:
:::::''Einstein produced about 18 virtuoso derivations and demonstrations all aimed at establishing the mass-energy principle. We have shown that although each of them gave evidence for the applicability of E0 = mc² to a particular set of circumstances, no one derivation, or collection of them taken together, succeeded in providing a definitive proof of its complete generality. That should not be surprising because the same situation occurs, for example, with F = ma, which is a different kind of relation than E0 = mc². Even so, 300 years of successful theoretical work have not proven the correctness of F = ma. Indeed, relativity showed that this expression, one of the bedrocks of classical mechanics, holds only approximately.
::::Here is another excerpt, on mass, electromagnetism etc:
:::::''In the 19th century, a number of European physicists, including the leading theoretician of the time, Hendrik Lorentz, were working to establish that mass was, in whole or in part, electromagnetic. There were primarily two competing theories, one by Lorentz, the other by Max Abraham. Both agreed that depending on the relative direction of its velocity and acceleration, an “electron” a generic charged particle moving through the aether could manifest both transverse and longitudinal speed-dependent mass components. There was even experimental evidence that seemed to confirm as much. Electromagnetic theory was then at the center of physics.''
::::[[User:AugustO|AugustO]] 16:56, 28 March 2012 (EDT)

::::(May I add that I think one shouldn't make such fundamental statements as ''E=mc² has no meaning'', if one only skims a few abstracts! [[User:AugustO|AugustO]])

Aschlafly, maybe you have not the time (or the access) to read the actual papers - as you should when drawing conclusions. But perhaps you can take a look at [http://www.lbl.gov/abc/Basic.html Lawrence Berkeley National Laboratory's ABC of Nuclear Science] to refresh the basics?Even there, they use ''Einstein's famous equation...''... [[User:AugustO|AugustO]] 08:44, 29 March 2012 (EDT)

== ...purports to relate all matter to light ==

When I write that for iron I get:
::V [cm³] * 7.874 g/cm³ = M [g]
I don't relate the mass to 7.8474, but to the volume. So, similarly Einstein's equations says that mass is proportional to energy, not light. [[User:AugustO|AugustO]] 10:38, 29 March 2012 (EDT)
:But the constant applied in this case is the (square of the) speed of light! Are you saying that that is a coincidence? If so, why not just say "E=mc"?--[[User:CPalmer|CPalmer]] 10:57, 29 March 2012 (EDT)
::no, of course not, but we could write, e.g., Eε0 = m/μ0: the relationship is given between mass and energy... [[User:AugustO|AugustO]] 11:04, 29 March 2012 (EDT)
:::But the relationship itself is somehow connected to light. Or maybe, the relationship is connected with some third factor that also determines the speed of light.--[[User:CPalmer|CPalmer]] 11:58, 29 March 2012 (EDT)
::::yes, but the c² is a constant. Does the equation E/c²=m relate all energy to light? [[User:AugustO|AugustO]] 12:18, 29 March 2012 (EDT)
:::::Yes - the equation in any form relates mass, energy, and the speed of light. I think the article doesn't emphasise the light-energy relationship because it's the mass-energy relationship that appears absurd once the theory of relativity is discounted.--[[User:CPalmer|CPalmer]] 12:22, 29 March 2012 (EDT)

Even if you discount the theory of relativity, the experimental facts remain: in experiments where mass is deleted or created, this happens with the release or absorption of energy. And this energy is given by ≈8.99*1016m²/s² times the mass... [[User:AugustO|AugustO]] 13:31, 29 March 2012 (EDT)

== Misleading footnote ==

::(Your footnote about the units is bogus. SI units are not arbitrary, since eg Joules can be derived from other SI units including kilograms, metres and seconds. Therefore, the relationship to light ''is'' (purported to be) a natural one.)--[[User:CPalmer|CPalmer]] 11:00, 29 March 2012 (EDT)

Which footnote about units? [[User:AugustO|AugustO]] 11:04, 29 March 2012 (EDT)

Ah, I see, no, not ''my'' footnote. The text was inserted by [[User:GregG/RSS_6#Mon.2C_26_Mar_2012_18:05:11_GMT_.28edit_by_MihailD.29_2|MihailD]], and obviously the equation holds in other systems, too. [[User:AugustO|AugustO]] 11:10, 29 March 2012 (EDT)

I took out the main part of the footnote: it should be obvious that in a physical equation only compatible physical units can be used, and that otherwise conversion factors have to be introduced. But there is no problem, if we have c in feet/h, m in pounds, and E in pound*feet²/h²
[[User:AugustO|AugustO]] 11:30, 29 March 2012 (EDT)

:I see - my apologies. I thought you had added the footnote in order to try and make the point above. I agree that in any sensible unit system the equation will work (assuming the theory is right of course).--[[User:CPalmer|CPalmer]] 11:32, 29 March 2012 (EDT)

:Looks like [[User:MihailD|MihailD]] received a lifetime block for this and related edits, so he'll be unable to explain or justify his comments. --[[User:JasperK|JasperK]] 08:58, 30 March 2012 (EDT)

::That's a pity! [[User:AugustO|AugustO]] 09:38, 30 March 2012 (EDT)

== We will, we will, we will ==

Generally I enjoy the great contribution of SamHB. My only rub: the ''royal we'' - ''we will dispel'', ''we will show'', ''we don't do''. I don't think that this is the best way to phrase an encyclopedic article, and I'd like to see alternatives. For the moments, I just commented out some of the occurrences which in my opinion spoiled the fun of reading the article....

[[User:AugustO|AugustO]] 09:38, 30 March 2012 (EDT)

:It is a bit chatty. The first one could be rephrased "This article sets out to...". I have reworded two of the others, and the rest might possibly be omitted entirely.--[[User:CPalmer|CPalmer]] 09:44, 30 March 2012 (EDT)

== I don't understand... ==

Why you guys destroyed a wonderful original piece of work by Mr. Schlafly. There are hundreds of books and web sites that explain relativity, why did you feel the need to reproduce that content here? --[[User:AlejandroH|AlejandroH]] 16:18, 30 March 2012 (EDT)
:Perhaps because they are right and he is wrong? [[User:AugustO|AugustO]] 16:39, 30 March 2012 (EDT)

::Aschlafly, you still haven't answered my [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|reasonable questions abouts this subject]]. To be ignorant on a subject isn't that big a deal, but to willfully stay ignorant while lecturing about it, that is! [[User:AugustO|AugustO]] 17:32, 30 March 2012 (EDT)

BTW, the ''wonderful original piece of work'' was not destroyed - you find it embedded in the text. A blanket reversion of the work of a couple of editors should be a no-no, please give reasons for reverting at least for each paragraph! And answer the [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|questions!]] [[User:AugustO|AugustO]] 17:42, 30 March 2012 (EDT)

== Protection of the Article ==

Stated reason: ''(with reluctance, and repeated reversions; for now, post specific suggestions for edits on the talk page)''

Aschlafly, this must be one of these definitions of irony, as I asked for specific reasons for your deletions of material. Isn't that censorship? BTW, you still haven't replied to the [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|sections above]], and frankly I'm starting to call your knowledge on this matter in question! Ignorance is not always bliss!

And if you are not willing to address the points made above by various contributors, are you at least willing to read and answer to ''specific suggestions for edits on the talk page''? Or is this a sham to force-feed your view to the readers?

[[User:AugustO|AugustO]] 18:39, 30 March 2012 (EDT)

:The lead focus of the entry was converted into a parade of [[hearsay]] rather than logical analysis. Simply put, the entry had denigrated into the ''antithesis'' of the truth-seeking integrity expected of ''Conservapedia''.--[[User:Aschlafly|Andy Schlafly]] 19:41, 30 March 2012 (EDT)
::And what about the current entry? The fact is that E=mc2 is a perfectly valid equation demonstrating the equivalence of matter and energy and it has been thoroughly verified; the energy a piece of matter contains DOES equal its mass times ''c'' squared. This has been repeatedly demonstrated by experiments, which consistently show that the energy released by a reaction is equal within measuring limits to the overall mass lost. It's perfectly reasonable to reject any claim that this demonstrates the truth of moral relativism, atheism or anything else, but to criticise the equation itself as "meaningless" or "liberal claptrap" demonstrates no truth-seeking or integrity. E=mc2 is no more liberal than d=vt or 1+1=2. --[[User:SamCoulter|SamCoulter]] 19:53, 30 March 2012 (EDT)

:::The entry explains how nonsensical the formula is as a general principle -- and how it has never been derived as a matter of logic or demonstrated in any general, meaningful manner. Reliance on [[hearsay]] is not a serious alternative.--[[User:Aschlafly|Andy Schlafly]] 20:24, 30 March 2012 (EDT)

::::But it ''isn't'' a general principle. It's a mathematical expression of matter-energy equivalence and it's perfectly valid. Whether or not it's ever been derived as a matter of logic or not is irrelevant because it's been repeatedly demonstrated to be true in the most meaningful manner possible: if you turn matter into energy the amount of energy that comes out is always equal to the lost mass times ''c'' squared. --[[User:SamCoulter|SamCoulter]] 20:59, 30 March 2012 (EDT)

:::::You restate the claim as though its repetition would make it true. It doesn't. If someone gains one pound in weight, then it is preposterous for anyone to claim that his energy has thereby increased in proportion to the speed of light squared.--[[User:Aschlafly|Andy Schlafly]] 21:07, 30 March 2012 (EDT)

::::::Yes, it would be absolutely preposterous. In fact his energy would have increased by a number of foot-pounds equal to one pound times ''c''2 in feet per second. --[[User:SamCoulter|SamCoulter]] 21:11, 30 March 2012 (EDT)
:::::::To explain that further, his energy would have increased in proportion to his '''weight''', not to the speed of light. If a person who weighed 150lb gained 1lb the energy contained in their mass would increase from 1.4467x1017 ft lb to 1.4564x1017 ft lb. --[[User:SamCoulter|SamCoulter]] 21:39, 30 March 2012 (EDT)

::::::::The formula '''E=mc2''' does assert that his energy for a fixed gain in weight would increase in proportion to the speed of light squared and, as you say, that is preposterous.--[[User:Aschlafly|Andy Schlafly]] 23:37, 30 March 2012 (EDT)

:::::::::No, his energy for a fixed gain in weight will increase in proportion to his '''weight'''. In my example of a 150lb man gaining 1lb, his new energy content will be 0.6667% higher, '''as will his weight'''. ''c''2 is just a constant. --[[User:SamCoulter|SamCoulter]] 00:52, 31 March 2012 (EDT)
::::::::::Andy seems to imagine that this energy should be immediately available for sports or doing work around the house, and that we should all be superheroes after having eaten a bar of chocolate. This is, of course, not so. The energy is still locked up in the mass, and it would require nuclear or particle reactions to convert even small parts of it into useful forms of energy. --[[User:FrederickT3|FrederickT3]] 03:28, 31 March 2012 (EDT)
''The lead focus of the entry was converted into a parade of [[hearsay]] rather than logical analysis''. Then let's get factual: just answer a [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|few questions]]. Shouldn't be difficult, as you are so insightful. [[User:AugustO|AugustO]] 01:26, 31 March 2012 (EDT)

Of course this is hearsay - and so it should be. Conservapedia is an encyclopedia - a collection of established information cited from other sources. Hearsay may be inappropriate in court, but it is the lifeblood of an encyclopedia. Anything that is not 'hearsay' is personal opinion or original research, and should be reserved for articles prefixed 'Essay:'. --[[User:JasperK|JasperK]] 08:23, 1 April 2012 (EDT)

:Then again, heresy tends to be more reputable when it comes from a professional who has studied the issue for years, instead of a man who doesn't understand how food works. [[User:JackFerner|JackFerner]] 12:23, 2 April 2012 (EDT)

== Bare links ==

I noticed that [http://conservapedia.com/index.php?title=E%3Dmc%C2%B2&diff=971455&oldid=971446 this edit] removed publication information about the references. Personally, I think this information is useful for two reasons: it helps Conservapedia editors locate the references from other sources if (and when) the links go dead, and it helps who print out Conservapedia articles and wish to look up the references offline. (Of course, I'm not suggesting that the URLs be removed, but this could be in addition to the publication information). Of course, there may be perfectly good reasons for removing the publication information of which I am not aware, but I otherwise think that the publication information should be included again (and I plan to do this once the protection expires). [[User:GregG|GregG]] 23:17, 30 March 2012 (EDT)

:Great point. I retrieved and added many of the citations back. If I missed any then I'd be happy to add them also.--[[User:Aschlafly|Andy Schlafly]] 23:37, 30 March 2012 (EDT)

== Niels Bohr ==
Andy, for how often you rail against the Nobel Prize I'm surprised that you would try and use a former winner as an authority to support your misguided assertion. [[User:DennisR|DennisR]] 21:48, 1 April 2012 (EDT)

:Even a broken clock (like the Nobel Prize) gets it right every once in a while!--[[User:Aschlafly|Andy Schlafly]] 22:07, 1 April 2012 (EDT)

::''. As a general claim of equivalence between mass, energy and the speed of light, it was widely rejected at the time by the leading 20th century physicists, including Niels Bohr. '' Who were these physicists? And what said Niels Bohr? I couldn't find anything. In the famous ''Gedankenexperiment'' at Solvay, he accepted ''E=mc²! [[User:AugustO|AugustO]] 02:14, 2 April 2012 (EDT)

:::And of course it ''isn't'' a "general claim of equivalence between mass, energy and the speed of light." It's a statement of equivalence between energy and matter. Andy seems to be obsessed with the idea that light is involved somehow, and that conflicts with his rather odd idea that the Bible forbids a unified theory. I can only wonder what he'll do if science comes up with a unified theory. Probably deny that too. --[[User:SamCoulter|SamCoulter]] 02:16, 2 April 2012 (EDT)

Aschlafly, according to the information I found (Einstein and Bohr at the Solvay-conference), Niels Bohr accepted ''E=mc²''. So, a fact-tag was the only alternative to downright deleting the sentence: it allows you to bring up your sources! [[User:AugustO|AugustO]] 02:31, 2 April 2012 (EDT)
:I'd have been amazed if he hadn't. Bohr was on the British team for the Manhattan Project, and he wouldn't have been much use at nuclear weapon design if he didn't accept E=mc2. --[[User:SamCoulter|SamCoulter]] 02:41, 2 April 2012 (EDT)

::Aschlafly, you have a tendency to make up claims (''As a general claim of equivalence between mass, energy and the speed of light, it was widely rejected at the time by the leading 20th century physicists, including Niels Bohr. '', ''Undoubtedly many other experiments contradict the formula'', and, yes, '' "suddenly" or "at that time" is a nuance of the Greek ἰδού''). And when your bluff is called, you are miffed! [[User:AugustO|AugustO]] 03:00, 2 April 2012 (EDT)
::''Protected "E=mc²": insertion of a fact tag instead of finding and adding a reference.'' That is ridiculous: there is no way of ''finding and adding a reference'' for this made-up "''fact''"!
::It is, however, not very difficult to show that the ''fact'' was invented: just take a look into ''"Foundations of Quantum Physics I''", a book written by Niels Bohr and Jorgen Kalckar. Here Bohr uses what he calls ''Einstein's relation'' without any trepidation! [[User:AugustO|AugustO]] 09:00, 2 April 2012 (EDT)
:::Presumably, then, the relevant text should be changed to something like "it was widely rejected at the time by the leading 20th century physicists, although Niels Bohr later accepted it." and then add the citation. Or you could clarify with something like "the liberal Nobel Prizewinner Niels Bohr".--[[User:CPalmer|CPalmer]] 09:18, 2 April 2012 (EDT)
::::*There is no reason to think that there was a time at which Niels Bohr didn't accept it!
::::*Is there any source which shows that it was ''widely rejected at the time''? Of course, there was the [[Deutsche Physik]], but does this count?
::::*That said: the <nowiki>{{fact}}</nowiki> tag was absolutely appropriate.
::::[[User:AugustO|AugustO]] 09:44, 2 April 2012 (EDT)

:::::You make some valid points as the online evidence is remarkably scant, even though the disagreement between Bohr and Einstein is well-known. This may be a (rare) example where the internet is less adequate than books. I did add an explanatory footnote and the protection to the page should be expiring soon, if not already.--[[User:Aschlafly|Andy Schlafly]] 10:22, 2 April 2012 (EDT)

*Einstein disagreed with Bohr regarding quantum mechanics. Could you provide a source that Bohr disagreed with Einstein on the theory of relativity? I can't find one!
*As I said, the <nowiki>{{fact}}</nowiki> tag was absolutely appropriate, and I'll reinsert it, as I don't think that there are any sources to back-up your claim.
*Furthermore, I have difficulties to believe that Lord Rutherford had problems with ''E=mc²'', he seemed to appreciate the liquid-drop-model of Gamov, Bohr, et al.
*''a general claim of equivalence between mass, energy and the speed of light'': no one claims that the '''three''' are equivalent!
[[User:AugustO|AugustO]] 11:22, 2 April 2012 (EDT)

== First sentence ==

I've changed the introduction to something a bit more encyclopaedic. Please don't revert without discussing it first. Thanks. --[[User:SamCoulter|SamCoulter]] 16:28, 2 April 2012 (EDT)

== Political Pressure ==

''Political pressure has since made it impossible for anyone pursuing an academic career in science to even question the validity of this nonsensical equation''

More likely the fact that similar experiments as the one Cockcroft and Walton are performed by undergraduates in each department teaching physics around the world! [[User:AugustO|AugustO]] 02:30, 3 April 2012 (EDT)

:No, that would not explain why it "is impossible for anyone pursuing an academic career in science to even question the validity of" E=mc2. Even if you think the formula is somehow true, surely you do not deny the political pressure in academia against anyone who might consider questioning it.--[[User:Aschlafly|Andy Schlafly]] 10:37, 3 April 2012 (EDT)
::It's entirely possible for someone who questions the validity of E=mc2 to pursue a career in science; scientists are encouraged to question the validity ''everything''. However if they ''deny'' the validity of E=mc2 then a scientific career is indeed off-limits to them, for the same reason as it's off-limits to someone who denies that 1+1=2. The fact is, E=mc2. It's been verified time and time again. --[[User:SamCoulter|SamCoulter]] 18:44, 3 April 2012 (EDT)

To talk about political pressure in this context is ridiculous. The conversion of Mass to Energy and vice versa and the validity of E=mc2 has been demonstrated experimentally so often(an early example is given in the main page) that to deny that the equation describes observed nature flies in the face of observation and is thus unscientific. To question its validity without hard experimental evidence or a sound theoretical argument (neither of which has been demonstrated) would simply be a matter of scientific (in)competance.[[User:Jloveday|Jloveday]] 15:16, 3 April 2012 (EDT)

:*Aschlafly, if you argue against ''E=mc²'' out of a position of (willful) ignorance, you won't be taken seriously. Unfortunately this is what you are doing, as your (non-) answer [[Talk:E=mc²#A few questions for Aschlafly regarding the experiment of Cockroft and Walton|above]] is showing.
:*Criticism of ''E=mc²'' on ideological grounds just doesn't work, as the adherents of the [[Deutsche Physik]] found out in the early 1940s.
:*But obviously, the theory is under constant discussion, as is the concept of energy or mass.
:[[User:AugustO|AugustO]] 18:34, 3 April 2012 (EDT)

Ministry of Defence (United Kingdom)

2012-04-02T21:58:37Z

SamCoulter: The vile Jock Stirrup is, I'm happy to say, no longer CDS.

The Ministry of Defence (MoD) is the [[United Kingdom]] [[government]] department responsible for implementation of government [[Defense|defence]] [[policy]] and is the headquarters of the British Armed Forces.

The main aims of the MoD are to defend the United Kingdom and its interests and to strengthen international [[peace]] and stability. The MoD also manages day to day running of the armed forces, contingency planning and defence procurement.

==Senior Officials==

Ministers:

Secretary of State for Defence
Rt Hon Philip Hammond MP

Minister of State for the Armed Forces
Nick Harvey MP

Minister for International Defence and Security
Gerald Howarth MP

Under Secretary of State and Minister for Defence Equipment and Support
Peter Luff MP

Under-Secretary of State for Defence and Minister for Veterans
Rt Hon Andrew Robathan MP

House of Lords Spokesman

Lord Astor of Hever

Chiefs of Defence Staff:

Chief of the Defence Staff
The professional head of the UK Armed Forces and the principal military adviser to the Secretary of State for Defence and the Government.
General Sir David Richards GCB, CBE, DSO, ADC Gen (late [[Royal Artillery]])

First Sea Lord and Chief of Naval Staff
Professional head of the Royal Navy.
Admiral Sir Johnathan Band GCB ADC

Chief of the General Staff
Professional head of the British Army.
General Sir Peter Wall, KCB, CBE, ADC Gen (late [[Royal Engineers]])

Chief of the Air Staff
Professional head of the Royal Air Force.
Chief of the Air Staff - Sir Glenn Torpy KCB CBE DSO ADC BSc(Eng) FRAeS FCGI RAF

[[Category:United Kingdom]]

Talk:E=mc²

2012-04-02T20:28:14Z

SamCoulter: /* First sentence */ new section

==I'm Finding This a Little Hard to Understand==
First off, E = mc2 describing a relationship between energy and matter is only one corollary. It is also part of a well known problem in chemistry... Or is isotopic mass not less than the sum of it's parts? The equation itself HAS been derived from the Theory of Relativity, and is a direct consequence of the energy momentum four vector for an object with 0-momentum. The quote you provide from the paper states that the theory is not enough for a rigorous PROOF, but it never tries to deny the derivability of the equation. Derivation and proof are two entirely different things.

==This Article Could Use Sources or Better Explanation==
Wow. Classic Andy. Unsourced statements supposedly contradicting well-established theories of physics. No real proof other than "the Bible says it's not true," even though this is an extremely uncommon interpretation Genesis. --[[User:AndreaM|AndreaM]] 01:06, 25 March 2012 (EDT)

:It's a start for now, and will expand over time. That's how wikis work.--[[User:Aschlafly|Andy Schlafly]] 01:18, 25 March 2012 (EDT)
::Doesn't it relate energy to mass? The speed of light is just a constant here. [[User:IanR|IanR]] 02:22, 25 March 2012 (EDT)

== Humbug ==

The phrase ''meaningless, almost nonsensical, statement '' (as used in the article) fits the first paragraph to a t.

Aschlafly, please try to refute the explanation of the experiments of John Cockroft and Ernest Walton, which is accepted generally under physicists. And try to give some sources - or if not, some of your own calculations!

If not, just erase the first section.

[[User:AugustO|AugustO]] 11:23, 25 March 2012 (EDT)

== Nobel Lecture ==

I took out the link to the Nobel lecture, it can be found in the short summary. But be aware that John Cockroft is using the dreaded formula with ease (but without stating so explicitly - why should he, it's already generally accepted!) An astute reader, who not only searches for the formula finds e.g., the formulation:

:'''This energy could be provided by a diminution of mass of 0.0184 mass units.'''

Indeed, these are the ≈ 17MeV!
[[User:AugustO|AugustO]] 11:51, 25 March 2012 (EDT)

==Irrelevant claims==
Are these claims of so called "experimental verification" valid or useful? If you look at enough so-called science you can find people claiming anything. --[[User:DavidEdwards|DavidEdwards]] 12:59, 25 March 2012 (EDT)
:''you can find people claiming anything'' Indeed - and that's why there is a difference between the unsubstantiated claims in the first section, and the actual experiments in the following paragraphs. If you have a good explanation of the outcome of these experiments (some math would be nice), feel free to add your personal ''claim''.
:[[User:AugustO|AugustO]] 13:03, 25 March 2012 (EDT)
::Why do you feel that I need to do that? I understand that you may wish to believe relativity is true, but that is no reason to impose your personal beliefs on others.--[[User:DavidEdwards|DavidEdwards]] 13:40, 25 March 2012 (EDT)
:::Thinking that all claims have the same validity seems not a very conservative position. I don't expect you to accept my personal beliefs, but there is a tendency in physics that the claims which are backed up by those willing to do the experiments and the maths have a greater following than random insights. [[User:AugustO|AugustO]] 13:47, 25 March 2012 (EDT)
::::I don't understand why your personal beliefs are even included in the article.--[[User:DavidEdwards|DavidEdwards]] 13:58, 25 March 2012 (EDT)
:::::*Because they are bolstered by experiments...
:::::*...and they aren't just my beliefs - in fact it will be very hard to find a physicist who doesn't share them. And that's something which shouldn't be easy to ignore in an article on a physical subject.
:::::[[User:AugustO|AugustO]] 14:02, 25 March 2012 (EDT)
::::::If science is your religion then you will find scientists who share your views. I still don't see why they should be hosted here. The introduction makes the Biblical position clear.--[[User:DavidEdwards|DavidEdwards]] 14:07, 25 March 2012 (EDT)
:::::::Religion is my religion, science is my hobby. And just because there is one single interpretation of a few verses of Genesis out there which you think to contradict the experiments of the physicists doesn't shatter my religious beliefs nor my trust in physics. [[User:AugustO|AugustO]] 14:35, 25 March 2012 (EDT)
::::::::Then why do you insist with this anti-religious pseudoscience?--[[User:DavidEdwards|DavidEdwards]] 14:41, 25 March 2012 (EDT)
← Now you have intrigued me: what's your definition of pseudoscience? [[User:AugustO|AugustO]] 14:45, 25 March 2012 (EDT)

Pssst! DavidEdwards! You're trying waaaaay too hard. --[[User:JoshuaB|JoshuaB]] 21:20, 25 March 2012 (EDT)
:Too hard about what?
:As far as the pseudoscience question is concerned - "science" which is used to promote a worldview which has no basis in moral reality is pseudoscience. Science which is designed to suggest that morality is relative clearly falls into this category.--[[User:DavidEdwards|DavidEdwards]] 18:40, 26 March 2012 (EDT)

==Question==
This snipet of sentence appears in the introduction: "...''a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory.''" Let's compare that to the entire sentence it was lifted from: "'''''Leaving aside that it continues to be affirmed experimentally,''' a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory.''" One can't help but notice that the part of the sentence that states that the theory has been observed to be valid in real world experimentation, has been surgically removed. Why is this? Is it because it stands in contradiction to the claim the lead author of this article is trying to promulgate? --[[User:JoshuaB|JoshuaB]] 20:55, 25 March 2012 (EDT)

:Peer-reviewed journals won't publish a criticism of relativity. That's obvious. Although I don't have a copy of the full paper, I doubt it attempts to fully support the [[hearsay]] that was excluded, and I would not be surprised if it was included simply to safeguard against complaints for what followed. It adds nothing to the basic point that follows and is quoted here.--[[User:Aschlafly|Andy Schlafly]] 21:19, 25 March 2012 (EDT)

::Why won't a peer-reviewed journal publish a criticism of SR or GR? Liberal conspiracy? Also, do you not accept that mass and energy are interchangeable or is it a problem with this specific equation? --[[User:JoshuaB|JoshuaB]] 21:24, 25 March 2012 (EDT)

:::JoshuaB, do you accept the possibility that the [[Theory of Relativity]] may be false, and would you approve a well-written paper that criticized it? It's a simple "yes" or "no" question.--[[User:Aschlafly|Andy Schlafly]] 21:55, 25 March 2012 (EDT)

::::Yes. We already know the Theory of Relativity is an incomplete model of our universe. So yes, the theory may be "false", but the one that takes it's place will most likely have many of the same properties. Secondly, would I approve of a "well-written paper that criticized it"? I don't know what that means. I'm not a physicist, so I don't see what difference my "approval" of said paper would make. Now that I've been so kind as to answer your questions, would you return the courtesy and answer the ones I posted above? --[[User:JoshuaB|JoshuaB]] 22:35, 25 March 2012 (EDT)

:::::The qualifications on your answer render it almost meaningless. I'm not asking whether your approval of a paper would make a difference, or your opinion about whether you think the replacement of the [[Theory of Relativity]] will "most likely" be another theory of relativity. The question was simple and straightforward, referring to a paper critical of the theory of relativity without any appeasement to those who insist on believing in it. An unqualified answer is requested.

:::::Also, did you ever answer my simple question on [[Talk:Main Page]] about how much time you've spent reading the [[Bible]] this month?--[[User:Aschlafly|Andy Schlafly]] 22:50, 25 March 2012 (EDT)

::::::Come off it Schlafly. This article is not about my Bible reading, is it? No. Does my opinion of the publishing criteria of physics academia have any bearing on the assertions you are trying make? No. Again: Do you not accept that mass and energy are interchangeable or is it a problem with this specific equation? --[[User:JoshuaB|JoshuaB]] 23:11, 25 March 2012 (EDT)

:::Andy, do you accept the possibility that the Theory of Relativity may be correct, and would you approve a well-written paper or book that supported it? It's a simple "yes" or "no" question. --[[User:FrederickT3|FrederickT3]] 03:28, 26 March 2012 (EDT)

== Some points ==

*''Misplaced claims of experimental verification'': if you want to put on the disclaimer ''misplaced'', please explain the results of the experiments in another way.
*''Why won't a peer-reviewed journal publish a criticism of SR or GR?'' But they do: remember the neutrino thing? Or the papers of H. Ives? In fact the first event has shown that especially the publication of experiments (seemingly) violating currently accepted theories gets attention!
*Taking only the second half of ''"Leaving aside that it continues to be affirmed experimentally, a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory."'' makes you looking deceptive. Take the whole sentence and try to explain the motivation of the first half. Otherwise anyone who looks the quote up will suspect an ulterior motive!
*The whole first section is a train wreck.
*''[[Mass]] is a measure of an object's inertia, and is directly related to the forces of [[gravity]].'' Only when you accept the general theory of relativity it is, otherwise inertial mass and gravitational mass are quite different animals.
[[User:AugustO|AugustO]] 02:46, 26 March 2012 (EDT)

::I have attempted to clarify the last point on the [[Mass]] page, and also removed the fact template from the first paragraph, since the explanation is given later on. As it stood, the "citation needed" banners following important points tended to undercut the authority of the article.--[[User:CPalmer|CPalmer]] 08:29, 26 March 2012 (EDT)
::The problem is not a confusion of weight and mass, but the conflation of gravitational and inertial mass. In the classical theory, there is no reason why both should be the same, it's just an experimental fact.
::So, I'm sorry, your new entry didn't help.
::[[User:AugustO|AugustO]] 08:40, 26 March 2012 (EDT)

:::But they always are the same, aren't they? I don't see why knowing or not knowing the reason (yet) has any bearing on the question.--[[User:CPalmer|CPalmer]] 08:43, 26 March 2012 (EDT)

::::Aschlafly writes: ''Mass is a measure of an object's inertia, and is directly related to the forces of gravity. In contrast, the intrinsic energy of an object (such as an atom) is a function of electrostatic charge and other non-inertial forces, having nothing to do with gravity.''
::::E=mc² isn't about gravity, to invoke it here is a deflection. [[User:AugustO|AugustO]] 08:49, 26 March 2012 (EDT)

::::: OK. But bear in mind that this page clearly exists to provide a counterweight to certain liberal views. To do that, clarity of message is needed, and a "citation needed" banner has a deflating effect on the strength of that clarity. So perhaps you could suggest a wording that might be acceptable without the "citation needed" bit?--[[User:CPalmer|CPalmer]] 09:03, 26 March 2012 (EDT)

No, I can't. Frankly, I don't see the clarity in this piece: at the moment, it is still sadly missing. So I hope, that Aschlafly taking care of the fact-tags (other then trimming them away) will add to this clarity! [[User:AugustO|AugustO]] 09:13, 26 March 2012 (EDT)

== Examples of how meaningless E=mc² is: descriptions for the layman ==

Try to explain a complicated formula in 1-2min, then have a single sentence of this soundbit taken out. You can bet that this may sound meaningless. That's no fault of the formula. I'll change the title back. [[User:AugustO|AugustO]] 09:58, 26 March 2012 (EDT)

:The quotes (and others that could be added) illustrate how meaningless the formula is.--[[User:Aschlafly|Andy Schlafly]] 10:02, 26 March 2012 (EDT)
::The quotes illustrate how difficult it is to explain the concept to a layman. Take a look [http://www.pbs.org/wgbh/nova/einstein/expe-text.html here], where you can find the quotes in context. [[User:AugustO|AugustO]] 10:16, 26 March 2012 (EDT)

:::The quotes were solicited to describe the meaning of the equation to laymen, not to illustrate how difficult that is. The difficulty arises from the meaningless nature of the equation.--[[User:Aschlafly|Andy Schlafly]] 11:01, 26 March 2012 (EDT)
::::Actually the meaning of the equation is very clear: the total energy contained in matter is its mass multiplied by the speed of light in a vaccum squared. Experiment after experiment, and nuclear reactor after nuclear reactor, has clearly demonstrated that the total energy released by a reaction is the lost mass multiplied by c2. Therefore whether the theories of relativity are true or not, E=mc2 is true. Equally, even if classical Newtonian mechanics was false, the kinetic energy of a moving mass would still be accurately described by Ek=1/2mv2. --[[User:SamCoulter|SamCoulter]] 16:34, 28 March 2012 (EDT)
::::Indeed. Internet quotes are really not very useful. A skilled researcher can always find someone saying something to justify their position however bizarre or immoral. This is a typical weakness (and response!) of those who have no real moral or religious basis for their convictions. --[[User:DavidEdwards|DavidEdwards]] 19:04, 26 March 2012 (EDT)
::::These quotes are absolutely meaningless. It looks like you took random sentences from the PBS article and then inserted them into the article as if they had any real significance. This is made even more moot when you consider the fact that the article claims that "Ten top physicists were asked to describe in laymen's terms E=mc²" and then you go on to quote three. Not to mention, most of the quotes aren't actually explaining what the equation means - a basic understanding of algebra and what the symbols mean is sufficient to understand its basic meaning - but rather what it entails, its implications. Tim Halpin-Healy's quote I think is better than taking some random sentences and then implying that they mean that physicists don't know what E=mc² means. --[[User:Tyg13|Tyg13]] 15:58, 1 April 2012 (EDT)

:::::The problem is that '''E=m2does not meaning anythimg that makes sense. Anyone is welcome to try to explain it here. Eating a pound of cake does not cause one's energy to increase by the speed of light squared.--[[User:Aschlafly|Andy Schlafly]] 16:06, 1 April 2012 (EDT)
::::::No, it doesn't. It causes your energy to increase by a number of foot-pounds equal to '''one pound''' times the speed of light squared. I've explained this to you already and it isn't difficult. --[[User:SamCoulter|SamCoulter]] 16:23, 1 April 2012 (EDT)
:At any rate, eating a pound of cake, is not nuclear physics, it is chemistry, where your cells digest and utilize the sugars within. Protiens are also converted into sugar.[[User:JonM|JonM]] 18:28, 1 April 2012 (EDT)

== Aschlafly, could you give us... ==

... your interpretation of the results of the experiment by Cockroft and Walton? Cockroft describes in his Nobel Lecture how the kinetic energy of the alpha-particles could be provided by ''diminution of mass of 0.0184 mass
units.'' (p. 170). Please take into account that this isn't about energy in form of electromagnetic waves!

If you don't address the results of the actual experiments, all your claims are just meaningless verbiage.
[[User:AugustO|AugustO]] 10:39, 26 March 2012 (EDT)

:Cockcroft (please spell his name correctly) does not even cite E=mc2 in his Nobel lecture.--[[User:Aschlafly|Andy Schlafly]] 11:01, 26 March 2012 (EDT)
::You don't think that it is ''implied'' by the quote that AugustO provided? --[[User:FrederickT3|FrederickT3]] 11:10, 26 March 2012 (EDT)

:::No, I don't. E=mc2 is supposedly a general truth of universal applicability. The case for it, if true, needs to be far stronger than what is quoted above.--[[User:Aschlafly|Andy Schlafly]] 11:15, 26 March 2012 (EDT)

From the lecture: ''It was obvious then that lithium was being disintegrated into two α-particles with a total energy release of 17.2 million volts. This energy could be provided by a diminution of mass of 0.0184 mass
units.''

Aschlafly, your ignorance is showing:
17.2 MeV /c² = 1.602*10-19kg m²/s² *17.2 *109/(3*108 m/s)² = 3.0616 * 10-29kg = 0.0184 amu

In fact as this is such a ''general truth of universal applicability'', J. Cockroft could take it for granted that his scientifically literate audience would be able to make this calculation.
[[User:AugustO|AugustO]] 11:26, 26 March 2012 (EDT)

:::One question, though: We have four protons and four neutrons on the left hand side of the equation, and four protons and four neutrons on the right hand side. So why the difference in mass?
:::Also, forgive my ignorance, but why is the 'energy' measured in volts? Volts are not a measure of energy.--[[User:CPalmer|CPalmer]] 11:40, 26 March 2012 (EDT)

*Bainbridge measured the mass of 7Li directly, using mass spectrometry.
*Indeed, three protons and four neutrons weight less than a 7Li - kernel
*Energy is measured in this cases in [[Electron-Volts]]. One electron volt is the energy of an electron which passed through a potential of 1 Volt.
[[User:AugustO|AugustO]] 11:54, 26 March 2012 (EDT)
:AugustO, please contribute something substantive instead of talking up a storm. Thanks.--[[User:JamesWilson|James Wilson]] 11:56, 26 March 2012 (EDT)
:::James Wilson, please don't interfere in interesting and substantive discussions. Thank you! [[User:Baobab|Baobab]] 12:12, 26 March 2012 (EDT)
::::"Baobab", please state what substance is coming out of this conversation. You have had a history of engaging in hefty talk. Please start contributing. I have had some great insights contributing in a few articles today and will continue to do so. Many thanks for your future contributions.--[[User:JamesWilson|James Wilson]] 12:47, 26 March 2012 (EDT)
:::::"James Wilson", AugustO is clarifying things and giving us some great insights, as CPalmer's latest reply shows. Discussions will often lead to better articles, which is why your interference was totally uncalled for. I guess your only motive was to defend Mr. Schlafly, but he can take care of himself and really doesn't need your help. Regards, [[User:Baobab|Baobab]] 13:30, 26 March 2012 (EDT)
::Thanks, AugustO. Relativity or no relativity, I am learning a lot from this discussion.--[[User:CPalmer|CPalmer]] 12:00, 26 March 2012 (EDT)
:::You are posing excellent questions! Indeed it should be of interest for Aschlafly, too:
:::'''Aschlafly, two protons (1.0073amu) and two neutrons (1.0087amu) have a combined mass of 4.0320 amu. An alpha-particle - existing from two protons and two neutrons - has a mass of 4.0015 amu. How do you explain this diminution of mass?
:::[[User:AugustO|AugustO]] 13:42, 26 March 2012 (EDT)
::::What real evidence do you have that these particles even exist? No doubt you've read it in a book or some "qualified person" has said it is true. In reality you accept these things on the word of somebody else - in other words your belief in the existence of these particles is a matter of scientific faith in something which you have no personal knowledge. There is obviously no problem with believing things on faith, but please don't pretend it's "true because science says it's true". Christians get their real truth from a higher authority.--[[User:DavidEdwards|DavidEdwards]] 18:49, 26 March 2012 (EDT)
:::::I find Mr O's position to be rather odd. He insists that Mr Schlafly - and only Mr Schlafly answers his questions. Yet at the same time Mr O steadfastly ignores comments specifically directed at him.--[[User:DavidEdwards|DavidEdwards]] 16:11, 28 March 2012 (EDT)
::::::If you're referring to your question about how he knows that protons and neutrons really exist, I suspect he thought it wasn't worth answering. I tend to agree. --[[User:SamCoulter|SamCoulter]] 16:15, 28 March 2012 (EDT)

@DavidEdwards: Sorry, [[User:DavidEdwards|DavidEdwards]], I didn't want to ignore you. I hadn't caught up after the databank mishap, I'm afraid.
So, to answer your questions: At school, we performed a couple experiments -there were teltron tubes, the Millikan the photo-electric effect, the Millikan Oil Drop experiment, de Broglie's electron diffraction experiments, etc. These experiments confirmed my persuasion that the electrons, protons and neutrons are physically real entities. The proposed theories explained these effects - and sitting in front of a computer, I'm surprised that you aren't willing to accept the theories behind semi-conductors. [[User:AugustO|AugustO]] 16:25, 28 March 2012 (EDT)
@SamCoulter: There is some truth in your statement, too: it's like asking a priest: ''let's talk about your religion without mentioning Jesus''... [[User:AugustO|AugustO]] 16:28, 28 March 2012 (EDT)

== Restoration ==

I could restore this page to the last version which I had edited. I don't know whether there were more entries. This should help to restore the article: perhaps one positive effect could be that Aschlafly marvels about the questions in the previous section for a while and rethinks his position! [[User:AugustO|AugustO]] 18:36, 26 March 2012 (EDT)

== Instead of the source - tag ==

*''E=mc² is a meaningless, almost nonsensical, statement in physics that purports to relate all matter to light.''
It relates matter to energy, the square of the speed of light is just the conversation factor
*''In fact, no theory has successfully unified the laws governing mass (i.e., gravity) with the laws governing light (i.e., electromagnetism).''
It isn't about gravitational mass, but about inertial mass. To identify both means to invoke the General Theory of Relativity
* ''Simply put, E=mc² is liberal claptrap. ''
How so? It works!
* ''Biblical Scientific Foreknowledge predicts that a unified theory of all the laws of physics is impossible, because light and matter were created at different times, in different ways, as described in the Book of Genesis.''
So, physicists should just give up looking for it? I dare to say that there are many Christian physicists - they may just not follow your special interpretation of Genesis!
[[User:AugustO|AugustO]] 09:29, 27 March 2012 (EDT)

== A few questions for Aschlafly regarding the experiment of Cockroft and Walton ==

I'd appreciate an answer by Aschlafly (and him alone) to the following questions:

'''1.''' Do you accept that the mass of the Lithium-kernel (7Li), of alpha-particles (4He) and of protons (1H) can be measured fairly accurately, as these are charged particles?

'''2.''' Do you accept the measurements for the mass of the particles as used by Cockroft and Walton, i.e.
:::{|
!particle
!mass
|-
|1H||1.0072 amu
|-
|4He||4.0011 amu
|-
|7Li||7.0130 amu
|}
If not, which values do you think to be right?

'''3.''' Do you agree that before the reaction the mass of the particles involved was 8.0202 amu?

'''4.''' Do you agree that after the reaction the mass of the particles involved is 8.00220 amu?

'''5.''' Do you agree that there is a mass decrease of 0.0180 amu?

'''6.''' Before the experiment, the Li was at rest and the proton had a kinetic energy of less than 1MeV. Do you accept these values?

'''7.''' After the experiment, a pair of alpha-particles was observed, both having an kinetic energy of 8.6MeV. Do you think that this value is correct?

'''8.''' Can you tell me where the mass went? Can you tell me where the energy came from?

'''9.''' If your answer to question 8. is ''no'' in both accounts, than my answer is that there is a theory which explains the conversion of mass to energy, even if you don't like it!

As this theory works for this experiment, and for all the other fissions and fusions, it isn't liberal claptrap, but a meaningful theory. And you can't blame physicists for using it! Of course, you can blame journalist to abuse the formula - but this isn't the result of ''liberal physics'', but of ''bad reporting'', as an abuse of the dictum ''1+1=2'' doesn't reflect badly on number-theorists, but only on the person misattributing it.

Thanks, [[User:AugustO|AugustO]] 08:04, 28 March 2012 (EDT)

:AugustO, chemical reactions can release energy, typically based not on the size of their mass but on the electrostatic energy prior to the reaction. Cockcroft's own paper accepting the Nobel Prize does not claim that his work proved that '''''E=mc2'''''. Undoubtedly many other experiments contradict the formula, or else we'd have seen far more claims of experimental verification of it.--[[User:Aschlafly|Andy Schlafly]] 11:20, 31 March 2012 (EDT)

Aschlafly, you haven't answered any of the questions above! Instead you are talking about something completely different:
*We are not talking about a ''chemical'' reaction! You should know the difference.
*Cockroft claims that the energy comes from the loss of mass - and he calculates it according to ''E=mc²''. Please read (and understand!) his lecture.
*Please give a list of a few (or at least a single) experiment which contradicts the formula. This should be easy, as you stated that ''Undoubtedly many other experiments contradict the formula''. Oh, wait, you made that up...
*Please answer the questions 1 to 9: all the question are covered in Cockroft's lecture, so I'd be interested in your explanation!
[[User:AugustO|AugustO]] 11:32, 31 March 2012 (EDT)
:AugustO, if you cannot even spell Cockcroft's name properly, how can Andy take anything you say seriously? --[[User:AndreaM|AndreaM]] 22:03, 31 March 2012 (EDT)

== Move ==

Could you please move this article to [[Essay:E=mc²]]? Then I could ignore all the misleading and outright wrong statements in the first section! Thanks, [[User:AugustO|AugustO]] 15:57, 28 March 2012 (EDT)

== Experimental Facts ==

Aschlafly, on the one hand side, you state that ''no experiment distinguishes between "gravitational" and "inertial" mass'' - and that seems good enough for you. On the other hand side, you have a problem with the statement that E=mc² ''continues to be affirmed experimentally''. Do you spot the inconsistency? Indeed, I could write: ''the equivalence between inertial mass and gravitational mass has never been mathematically derived from first principles in classical mechanics, indeed, a rigorous proof of this equivalence is probably beyond the purview of classical theory.''

BTW, omitting the first part of the sentence ''"Leaving aside that it continues to be affirmed experimentally..."'' makes you look very disingenuous (even if you have good motives) to anyone who looks up the link to the abstract!

[[User:AugustO|AugustO]] 16:07, 28 March 2012 (EDT)

:It's hair-splitting jargon of doubtful significance. 99% of people know what mass is, and it's directly related to weight, not electrostatic energy.--[[User:Aschlafly|Andy Schlafly]] 16:38, 28 March 2012 (EDT)
::And the remaining percent are the physicists which draw such distinctions with good reason! [[User:AugustO|AugustO]]
:::Even more confusing is that the article states mass is a measure of inertia. Inertia is resistance to acceleration, and that has nothing to do with gravity at all. The article as it stands is simply inaccurate. --[[User:SamCoulter|SamCoulter]] 16:51, 28 March 2012 (EDT)

::::Aschlafly: ''....may not even have any justification in the paper''
::::Aschlafly, havn't you read the paper? Here is a part of the conclusion:
:::::''Einstein produced about 18 virtuoso derivations and demonstrations all aimed at establishing the mass-energy principle. We have shown that although each of them gave evidence for the applicability of E0 = mc² to a particular set of circumstances, no one derivation, or collection of them taken together, succeeded in providing a definitive proof of its complete generality. That should not be surprising because the same situation occurs, for example, with F = ma, which is a different kind of relation than E0 = mc². Even so, 300 years of successful theoretical work have not proven the correctness of F = ma. Indeed, relativity showed that this expression, one of the bedrocks of classical mechanics, holds only approximately.
::::Here is another excerpt, on mass, electromagnetism etc:
:::::''In the 19th century, a number of European physicists, including the leading theoretician of the time, Hendrik Lorentz, were working to establish that mass was, in whole or in part, electromagnetic. There were primarily two competing theories, one by Lorentz, the other by Max Abraham. Both agreed that depending on the relative direction of its velocity and acceleration, an “electron” a generic charged particle moving through the aether could manifest both transverse and longitudinal speed-dependent mass components. There was even experimental evidence that seemed to confirm as much. Electromagnetic theory was then at the center of physics.''
::::[[User:AugustO|AugustO]] 16:56, 28 March 2012 (EDT)

::::(May I add that I think one shouldn't make such fundamental statements as ''E=mc² has no meaning'', if one only skims a few abstracts! [[User:AugustO|AugustO]])

Aschlafly, maybe you have not the time (or the access) to read the actual papers - as you should when drawing conclusions. But perhaps you can take a look at [http://www.lbl.gov/abc/Basic.html Lawrence Berkeley National Laboratory's ABC of Nuclear Science] to refresh the basics?Even there, they use ''Einstein's famous equation...''... [[User:AugustO|AugustO]] 08:44, 29 March 2012 (EDT)

== ...purports to relate all matter to light ==

When I write that for iron I get:
::V [cm³] * 7.874 g/cm³ = M [g]
I don't relate the mass to 7.8474, but to the volume. So, similarly Einstein's equations says that mass is proportional to energy, not light. [[User:AugustO|AugustO]] 10:38, 29 March 2012 (EDT)
:But the constant applied in this case is the (square of the) speed of light! Are you saying that that is a coincidence? If so, why not just say "E=mc"?--[[User:CPalmer|CPalmer]] 10:57, 29 March 2012 (EDT)
::no, of course not, but we could write, e.g., Eε0 = m/μ0: the relationship is given between mass and energy... [[User:AugustO|AugustO]] 11:04, 29 March 2012 (EDT)
:::But the relationship itself is somehow connected to light. Or maybe, the relationship is connected with some third factor that also determines the speed of light.--[[User:CPalmer|CPalmer]] 11:58, 29 March 2012 (EDT)
::::yes, but the c² is a constant. Does the equation E/c²=m relate all energy to light? [[User:AugustO|AugustO]] 12:18, 29 March 2012 (EDT)
:::::Yes - the equation in any form relates mass, energy, and the speed of light. I think the article doesn't emphasise the light-energy relationship because it's the mass-energy relationship that appears absurd once the theory of relativity is discounted.--[[User:CPalmer|CPalmer]] 12:22, 29 March 2012 (EDT)

Even if you discount the theory of relativity, the experimental facts remain: in experiments where mass is deleted or created, this happens with the release or absorption of energy. And this energy is given by ≈8.99*1016m²/s² times the mass... [[User:AugustO|AugustO]] 13:31, 29 March 2012 (EDT)

== Misleading footnote ==

::(Your footnote about the units is bogus. SI units are not arbitrary, since eg Joules can be derived from other SI units including kilograms, metres and seconds. Therefore, the relationship to light ''is'' (purported to be) a natural one.)--[[User:CPalmer|CPalmer]] 11:00, 29 March 2012 (EDT)

Which footnote about units? [[User:AugustO|AugustO]] 11:04, 29 March 2012 (EDT)

Ah, I see, no, not ''my'' footnote. The text was inserted by [[User:GregG/RSS_6#Mon.2C_26_Mar_2012_18:05:11_GMT_.28edit_by_MihailD.29_2|MihailD]], and obviously the equation holds in other systems, too. [[User:AugustO|AugustO]] 11:10, 29 March 2012 (EDT)

I took out the main part of the footnote: it should be obvious that in a physical equation only compatible physical units can be used, and that otherwise conversion factors have to be introduced. But there is no problem, if we have c in feet/h, m in pounds, and E in pound*feet²/h²
[[User:AugustO|AugustO]] 11:30, 29 March 2012 (EDT)

:I see - my apologies. I thought you had added the footnote in order to try and make the point above. I agree that in any sensible unit system the equation will work (assuming the theory is right of course).--[[User:CPalmer|CPalmer]] 11:32, 29 March 2012 (EDT)

:Looks like [[User:MihailD|MihailD]] received a lifetime block for this and related edits, so he'll be unable to explain or justify his comments. --[[User:JasperK|JasperK]] 08:58, 30 March 2012 (EDT)

::That's a pity! [[User:AugustO|AugustO]] 09:38, 30 March 2012 (EDT)

== We will, we will, we will ==

Generally I enjoy the great contribution of SamHB. My only rub: the ''royal we'' - ''we will dispel'', ''we will show'', ''we don't do''. I don't think that this is the best way to phrase an encyclopedic article, and I'd like to see alternatives. For the moments, I just commented out some of the occurrences which in my opinion spoiled the fun of reading the article....

[[User:AugustO|AugustO]] 09:38, 30 March 2012 (EDT)

:It is a bit chatty. The first one could be rephrased "This article sets out to...". I have reworded two of the others, and the rest might possibly be omitted entirely.--[[User:CPalmer|CPalmer]] 09:44, 30 March 2012 (EDT)

== I don't understand... ==

Why you guys destroyed a wonderful original piece of work by Mr. Schlafly. There are hundreds of books and web sites that explain relativity, why did you feel the need to reproduce that content here? --[[User:AlejandroH|AlejandroH]] 16:18, 30 March 2012 (EDT)
:Perhaps because they are right and he is wrong? [[User:AugustO|AugustO]] 16:39, 30 March 2012 (EDT)

::Aschlafly, you still haven't answered my [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|reasonable questions abouts this subject]]. To be ignorant on a subject isn't that big a deal, but to willfully stay ignorant while lecturing about it, that is! [[User:AugustO|AugustO]] 17:32, 30 March 2012 (EDT)

BTW, the ''wonderful original piece of work'' was not destroyed - you find it embedded in the text. A blanket reversion of the work of a couple of editors should be a no-no, please give reasons for reverting at least for each paragraph! And answer the [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|questions!]] [[User:AugustO|AugustO]] 17:42, 30 March 2012 (EDT)

== Protection of the Article ==

Stated reason: ''(with reluctance, and repeated reversions; for now, post specific suggestions for edits on the talk page)''

Aschlafly, this must be one of these definitions of irony, as I asked for specific reasons for your deletions of material. Isn't that censorship? BTW, you still haven't replied to the [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|sections above]], and frankly I'm starting to call your knowledge on this matter in question! Ignorance is not always bliss!

And if you are not willing to address the points made above by various contributors, are you at least willing to read and answer to ''specific suggestions for edits on the talk page''? Or is this a sham to force-feed your view to the readers?

[[User:AugustO|AugustO]] 18:39, 30 March 2012 (EDT)

:The lead focus of the entry was converted into a parade of [[hearsay]] rather than logical analysis. Simply put, the entry had denigrated into the ''antithesis'' of the truth-seeking integrity expected of ''Conservapedia''.--[[User:Aschlafly|Andy Schlafly]] 19:41, 30 March 2012 (EDT)
::And what about the current entry? The fact is that E=mc2 is a perfectly valid equation demonstrating the equivalence of matter and energy and it has been thoroughly verified; the energy a piece of matter contains DOES equal its mass times ''c'' squared. This has been repeatedly demonstrated by experiments, which consistently show that the energy released by a reaction is equal within measuring limits to the overall mass lost. It's perfectly reasonable to reject any claim that this demonstrates the truth of moral relativism, atheism or anything else, but to criticise the equation itself as "meaningless" or "liberal claptrap" demonstrates no truth-seeking or integrity. E=mc2 is no more liberal than d=vt or 1+1=2. --[[User:SamCoulter|SamCoulter]] 19:53, 30 March 2012 (EDT)

:::The entry explains how nonsensical the formula is as a general principle -- and how it has never been derived as a matter of logic or demonstrated in any general, meaningful manner. Reliance on [[hearsay]] is not a serious alternative.--[[User:Aschlafly|Andy Schlafly]] 20:24, 30 March 2012 (EDT)

::::But it ''isn't'' a general principle. It's a mathematical expression of matter-energy equivalence and it's perfectly valid. Whether or not it's ever been derived as a matter of logic or not is irrelevant because it's been repeatedly demonstrated to be true in the most meaningful manner possible: if you turn matter into energy the amount of energy that comes out is always equal to the lost mass times ''c'' squared. --[[User:SamCoulter|SamCoulter]] 20:59, 30 March 2012 (EDT)

:::::You restate the claim as though its repetition would make it true. It doesn't. If someone gains one pound in weight, then it is preposterous for anyone to claim that his energy has thereby increased in proportion to the speed of light squared.--[[User:Aschlafly|Andy Schlafly]] 21:07, 30 March 2012 (EDT)

::::::Yes, it would be absolutely preposterous. In fact his energy would have increased by a number of foot-pounds equal to one pound times ''c''2 in feet per second. --[[User:SamCoulter|SamCoulter]] 21:11, 30 March 2012 (EDT)
:::::::To explain that further, his energy would have increased in proportion to his '''weight''', not to the speed of light. If a person who weighed 150lb gained 1lb the energy contained in their mass would increase from 1.4467x1017 ft lb to 1.4564x1017 ft lb. --[[User:SamCoulter|SamCoulter]] 21:39, 30 March 2012 (EDT)

::::::::The formula '''E=mc2''' does assert that his energy for a fixed gain in weight would increase in proportion to the speed of light squared and, as you say, that is preposterous.--[[User:Aschlafly|Andy Schlafly]] 23:37, 30 March 2012 (EDT)

:::::::::No, his energy for a fixed gain in weight will increase in proportion to his '''weight'''. In my example of a 150lb man gaining 1lb, his new energy content will be 0.6667% higher, '''as will his weight'''. ''c''2 is just a constant. --[[User:SamCoulter|SamCoulter]] 00:52, 31 March 2012 (EDT)
::::::::::Andy seems to imagine that this energy should be immediately available for sports or doing work around the house, and that we should all be superheroes after having eaten a bar of chocolate. This is, of course, not so. The energy is still locked up in the mass, and it would require nuclear or particle reactions to convert even small parts of it into useful forms of energy. --[[User:FrederickT3|FrederickT3]] 03:28, 31 March 2012 (EDT)
''The lead focus of the entry was converted into a parade of [[hearsay]] rather than logical analysis''. Then let's get factual: just answer a [[Talk:E%3Dmc²#A_few_questions_for_Aschlafly_regarding_the_experiment_of_Cockroft_and_Walton|few questions]]. Shouldn't be difficult, as you are so insightful. [[User:AugustO|AugustO]] 01:26, 31 March 2012 (EDT)

Of course this is hearsay - and so it should be. Conservapedia is an encyclopedia - a collection of established information cited from other sources. Hearsay may be inappropriate in court, but it is the lifeblood of an encyclopedia. Anything that is not 'hearsay' is personal opinion or original research, and should be reserved for articles prefixed 'Essay:'. --[[User:JasperK|JasperK]] 08:23, 1 April 2012 (EDT)

:Then again, heresy tends to be more reputable when it comes from a professional who has studied the issue for years, instead of a man who doesn't understand how food works. [[User:JackFerner|JackFerner]] 12:23, 2 April 2012 (EDT)

== Bare links ==

I noticed that [http://conservapedia.com/index.php?title=E%3Dmc%C2%B2&diff=971455&oldid=971446 this edit] removed publication information about the references. Personally, I think this information is useful for two reasons: it helps Conservapedia editors locate the references from other sources if (and when) the links go dead, and it helps who print out Conservapedia articles and wish to look up the references offline. (Of course, I'm not suggesting that the URLs be removed, but this could be in addition to the publication information). Of course, there may be perfectly good reasons for removing the publication information of which I am not aware, but I otherwise think that the publication information should be included again (and I plan to do this once the protection expires). [[User:GregG|GregG]] 23:17, 30 March 2012 (EDT)

:Great point. I retrieved and added many of the citations back. If I missed any then I'd be happy to add them also.--[[User:Aschlafly|Andy Schlafly]] 23:37, 30 March 2012 (EDT)

== Niels Bohr ==
Andy, for how often you rail against the Nobel Prize I'm surprised that you would try and use a former winner as an authority to support your misguided assertion. [[User:DennisR|DennisR]] 21:48, 1 April 2012 (EDT)

:Even a broken clock (like the Nobel Prize) gets it right every once in a while!--[[User:Aschlafly|Andy Schlafly]] 22:07, 1 April 2012 (EDT)

::''. As a general claim of equivalence between mass, energy and the speed of light, it was widely rejected at the time by the leading 20th century physicists, including Niels Bohr. '' Who were these physicists? And what said Niels Bohr? I couldn't find anything. In the famous ''Gedankenexperiment'' at Solvay, he accepted ''E=mc²! [[User:AugustO|AugustO]] 02:14, 2 April 2012 (EDT)

:::And of course it ''isn't'' a "general claim of equivalence between mass, energy and the speed of light." It's a statement of equivalence between energy and matter. Andy seems to be obsessed with the idea that light is involved somehow, and that conflicts with his rather odd idea that the Bible forbids a unified theory. I can only wonder what he'll do if science comes up with a unified theory. Probably deny that too. --[[User:SamCoulter|SamCoulter]] 02:16, 2 April 2012 (EDT)

Aschlafly, according to the information I found (Einstein and Bohr at the Solvay-conference), Niels Bohr accepted ''E=mc²''. So, a fact-tag was the only alternative to downright deleting the sentence: it allows you to bring up your sources! [[User:AugustO|AugustO]] 02:31, 2 April 2012 (EDT)
:I'd have been amazed if he hadn't. Bohr was on the British team for the Manhattan Project, and he wouldn't have been much use at nuclear weapon design if he didn't accept E=mc2. --[[User:SamCoulter|SamCoulter]] 02:41, 2 April 2012 (EDT)

::Aschlafly, you have a tendency to make up claims (''As a general claim of equivalence between mass, energy and the speed of light, it was widely rejected at the time by the leading 20th century physicists, including Niels Bohr. '', ''Undoubtedly many other experiments contradict the formula'', and, yes, '' "suddenly" or "at that time" is a nuance of the Greek ἰδού''). And when your bluff is called, you are miffed! [[User:AugustO|AugustO]] 03:00, 2 April 2012 (EDT)
::''Protected "E=mc²": insertion of a fact tag instead of finding and adding a reference.'' That is ridiculous: there is no way of ''finding and adding a reference'' for this made-up "''fact''"!
::It is, however, not very difficult to show that the ''fact'' was invented: just take a look into ''"Foundations of Quantum Physics I''", a book written by Niels Bohr and Jorgen Kalckar. Here Bohr uses what he calls ''Einstein's relation'' without any trepidation! [[User:AugustO|AugustO]] 09:00, 2 April 2012 (EDT)
:::Presumably, then, the relevant text should be changed to something like "it was widely rejected at the time by the leading 20th century physicists, although Niels Bohr later accepted it." and then add the citation. Or you could clarify with something like "the liberal Nobel Prizewinner Niels Bohr".--[[User:CPalmer|CPalmer]] 09:18, 2 April 2012 (EDT)
::::*There is no reason to think that there was a time at which Niels Bohr didn't accept it!
::::*Is there any source which shows that it was ''widely rejected at the time''? Of course, there was the [[Deutsche Physik]], but does this count?
::::*That said: the <nowiki>{{fact}}</nowiki> tag was absolutely appropriate.
::::[[User:AugustO|AugustO]] 09:44, 2 April 2012 (EDT)

:::::You make some valid points as the online evidence is remarkably scant, even though the disagreement between Bohr and Einstein is well-known. This may be a (rare) example where the internet is less adequate than books. I did add an explanatory footnote and the protection to the page should be expiring soon, if not already.--[[User:Aschlafly|Andy Schlafly]] 10:22, 2 April 2012 (EDT)

*Einstein disagreed with Bohr regarding quantum mechanics. Could you provide a source that Bohr disagreed with Einstein on the theory of relativity? I can't find one!
*As I said, the <nowiki>{{fact}}</nowiki> tag was absolutely appropriate, and I'll reinsert it, as I don't think that there are any sources to back-up your claim.
*Furthermore, I have difficulties to believe that Lord Rutherford had problems with ''E=mc²'', he seemed to appreciate the liquid-drop-model of Gamov, Bohr, et al.
*''a general claim of equivalence between mass, energy and the speed of light'': no one claims that the '''three''' are equivalent!
[[User:AugustO|AugustO]] 11:22, 2 April 2012 (EDT)

== First sentence ==

I've changed the introduction to something a bit more encyclopaedic. Please don't revert without discussing it first. Thanks. --[[User:SamCoulter|SamCoulter]] 16:28, 2 April 2012 (EDT)

E=mc²

2012-04-02T20:25:59Z

SamCoulter: Inertia has nothing to do with gravity.

'''E=mc²''' is an equation that, according to the [[theory of relativity]], describes the equivalence of matter and energy.<ref>The equation claims that the total energy ''E'' of a body in all forms is equal to that body's mass ''m'' multiplied by the square of the speed of light ''c''. In [[natural units]], where ''c'' is set to be ''1'' and without dimension, the equation becomes ''E''=''m''.</ref> In fact, no theory has successfully unified the laws governing mass (''i.e.'', gravity) with the laws governing light (''i.e.'', electromagnetism). Simply put, E=mc² is [[liberal]] claptrap. As a statement of equivalence between mass and energy, it was initially rejected at the time by the leading 20th century physicists, including [[Niels Bohr]].<ref>Bohr disagreed with Einstein's 1905 paper, and many other scientists (including Lord Rutherford and Princeton Physics Professor [[Robert Dicke]]) rejected the [[Theory of Relativity]]; Bohr later agreed to some parts of relativity but continued to defend [[quantum mechanics]] against criticism by Einstein.</ref>{{fact}}

[[Biblical Scientific Foreknowledge]] predicts that a unified theory of all the laws of physics is impossible, because light and matter were created at different times, in different ways, as described in the [[Book of Genesis]].

[[Mass]] is a measure of an object's inertia, in other words its resistance to acceleration. In contrast, the intrinsic [[energy]] of an object (such as an [[atom]]) is a function of electrostatic charge and other non-inertial forces, having nothing to do with gravity. Declaring the object's energy to be a function of inertia rather than electrostatics is an absurd and impossible attempt to unify the forces of nature, contrary to [[Biblical Scientific Foreknowledge]].

For more than a century, the claim that '''E=mc²''' has never yielded anything of value. Often it seems to be used as a redefinition of "[[energy]]" for pseudo-scientific purposes, as by the [[lamestream media]]. There have been attempts to find some justification for the equation in already understood processes involved in [[nuclear power]] generation and [[nuclear weapon]]s, and in the speculation about [[antimatter]].<ref>Tyson, Peter. "The Legacy of E=mc²." October 11, 2005. PBS ''NOVA''. http://www.pbs.org/wgbh/nova/physics/legacy-of-e-equals-mc2.html</ref>

The [[Theory of Relativity]] has never been able to mathematically derive '''E=mc²''' from first principles, and a physicist observed in a peer-reviewed paper published in 2011 that "a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory."<ref>[http://adsabs.harvard.edu/abs/2011AmJPh..79..591H Eugene Hecht: ''How Einstein confirmed E0=mc²'', American Journal of Physics, Volume 79, Issue 6, pp. 591-600 (2011)]</ref>

It has been known for a long time that radiation has a mass equivalence, which was correctly derived by [[Henri Poincare]] in 1904,<ref>[http://www.opticsinfobase.org/josa/abstract.cfm?uri=josa-42-8-540 Herbert E. Ives ''Derivation of the Mass-Energy Relation'', JOSA, Vol. 42, Issue 8, pp. 540-543 (1952)]</ref> but the equation '''E=mc²''' makes a claim far beyond that limited circumstance:

{{cquote|The equality of the mass equivalent of radiation to the mass lost by a radiating body is derivable from Poincaré’s momentum of radiation (1900) and his principle of relativity (1904).|||Herbert Ives, 1952}}

== Description for the layman ==
Ten top physicists were asked to describe in laymen's terms '''E=mc²''':<ref>[http://www.pbs.org/wgbh/nova/einstein/experts.html Lexi Krock, David Levin (editors) ''E=mc² explained'', June, 2005. PBS ''NOVA'']</ref>{{cquote|''Things that seem incredibly different can really be manifestations of the same underlying phenomena.''|||Nima Arkani-Hamed, Theoretical Physicist, Harvard University}}{{cquote|''You can get access to parts of nature you have never been able to get access to before.''|||Lene Hau, Experimental Physicist, Harvard University}}{{
cquote|''It certainly is not an equation that reveals all its subtlety in the few symbols that it takes to write down.''|||Brian Greene Theoretical Physicist Columbia University}}

== History of '''E=mc²''' ==

The [[liberal]] [[Public Broadcasting Service]] explained the history of '''E=mc²''' for its NOVA series as follows:<ref>[http://www.pbs.org/wgbh/nova/physics/ancestors-einstein.html David Bodanis ''Ancestors of E=mc²''], NOVA, Nov 10, 2005]</ref>

{{cquote|Over time, [[physicist]]s became used to multiplying an object's mass by the square of its [[velocity]] (mv²) to come up with a useful indicator of its energy. If the velocity of a ball or rock was 100 mph, then they knew that the energy it carried would be proportional to its mass times 100 squared. If the velocity is raised as high as it could go, to 670 million mph, it's almost as if the ultimate energy an object will contain should be revealed when you look at its mass times c squared, or its mc².}}

==Experimental verification==
The first experimental verification for the equation was performed 1932 by a team of an English and an Irish physicist, John Cockcroft and Ernest Walton, as a byproduct of ''"their pioneer work on the transmutation of atomic nuclei by artificially accelerated atomic particles"''<ref>[http://www.nobelprize.org/nobel_prizes/physics/laureates/1951/# Nobel Prize Organization]</ref> for which they were honored with the [[Nobel Prize]] in physics in 1951. The idea of the mass defect - and its calculation using ''E=mc²'' can be found on page 169-170 of his Nobel lecture.<ref>[http://www.nobelprize.org/nobel_prizes/physics/laureates/1951/cockcroft-lecture.pdf John D. Cockroft ''Experiments on the interaction of high-speed nucleons with atomic nuclei''], Nobel Lecture, Dec 11, 1951]</ref>

They bombarded [[Lithium]] atoms with [[protons]] having a [[kinetic energy]] less than 1 [[Electron-Volts|MeV]]. The result were two (slightly less heavy) [[α-particle]]s, for which the [[kinetic energy]] was measured as 17.3 MeV

:::::<math>{}_3^7\mathrm{Li}\, +\, {}_1^1\mathrm{H}\,\rightarrow\,2\, {}_2^4\mathrm{He}</math>

The mass of the particles on the left hand side is 8.0263 [[atomic mass units|amu]]s, the mass on the right hand side ''only'' 8.0077 amu.<ref>Gerard Piel ''The age of science: what scientists learned in the 20th century'', Basic Books, 2001, p. 144-145</ref> The difference between this masses is .00186 amu, which results in the following back-of-an-envelope calculation:

::::<math>0.00186\,\mathrm{amu} \cdot c^2 = 0.0186 \cdot 1.66 \cdot 10^{-27}\,\mathrm{kg}\cdot\left(3\cdot10^8\,\mathrm{\frac{m}{s}}\right)^2</math>
::::<math>\approx\,2.79\cdot 10^{-12} \,\mathrm{kg}\mathrm{\frac{m^2}{s^2}}</math>
::::<math>\approx \,17.3\,\mathrm{MeV}</math>

Accurate measurements and detailed calculations allowed for verifying the theoretical values with an accuracy of ±0.5%. This was the first time a nucleus was artificially split, and thereby the first transmutation of elements using accelerated particles:

Some claim that the best empirical verification of '''E=mc2''' was done in 2005 by Simon Rainville et al., as published in ''Nature'' (which is not a leading physics journal).<ref>[http://www.nature.com/nature/journal/v438/n7071/full/4381096a.html Nature 438, 1096-1097 (22 December 2005)] doi:10.1038/4381096a; Published online 21 December 2005</ref> The authors state in their article in ''Nature'' magazine that "Einstein's relationship is separately confirmed in two tests, which yield a combined result of 1−Δmc²/E=(−1.4±4.4)×10−7, indicating that it holds to a level of at least 0.00004%. To our knowledge, this is the most precise direct test of the famous equation yet described."

==A Famous Example -- Nuclear Fission of Uranium==

For most types of physical interactions, the masses of the initial reactants and of the final products match so closely that it is essentially impossible to measure any difference. But for nuclear reactions, the difference is measurable. That difference is related to the energy absorbed or released, described by the equation E=mc². (The equation applies to '''all''' interactions; the fact that nuclear interactions are the only ones for which the mass difference is measurable has led people to believe, wrongly, that E=mc² applies only to nuclear interactions.)

The [[Theory of Relativity]] played no role in this work, but later tried to retrofit the theory to the data in order to explain the explain the observed mass changes. Here is the most famous example of the mass change.

Nuclear fission, which is the basis for nuclear energy, was discovered in experiments by [[Otto Hahn]] and [[Fritz Strassman]], and analyzed by [[Lise Meitner]], in 1938.

The decay path of [[Uranium]] that figured in the ''Hahn-Strassmann experiment'' may have been this:

:235U → 140Xe + 91Sr + 4n

(The [[Xenon]] decayed within about a minute to 140Ba. There are a large number of fission paths and fission products, but they were searching for the chemical signature of [[Barium]].)

The masses of the particles are:

{| class="wikitable" border="1" cellpadding="8" cellspacing="0"
! Substance
! 235U
! 140Xe
! 91Sr
! 4 neutrons
|-
| Number of protons
| 92
| 54
| 38
| 0
|-
| Number of neutrons
| 235
| 140
| 91
| 4
|-
| Number of electrons
| 92
| 54
| 38
| 0
|-
| Mass
| 235.04393
| 139.92164
| 90.910203
| 4.03466
|}

The mass of the Uranium atom is 235.04393, and the sum of the masses of the products is 234.866503. The difference is .177427 amu, or, using the E=mc² equation, 165 million electron volts. (The generally accepted value for the total energy released by Uranium fission, including secondary decays, is about 200 million electron volts.)

The insight that the conversion from Uranium to Barium was caused by complete fission of the atom was made by Lise Meitner in December, 1938. She had the approximate "mass defect" quantities memorized, and so she worked out in her head, using the E=mc² equation, that there would be this enormous release of energy. This release was observed shortly thereafter, and the result is nuclear power and nuclear weapons.

==A Topical Example: Speed of Extremely Energetic Neutrinos==
Here is another example of the use of this formula in physics calculations. Recently there has been quite a controversy over whether neutrinos were observed traveling at a speed faster than light. Relativity doesn't allow that, and, since neutrinos have nonzero (but incredibly tiny) mass, they aren't even supposed to travel ''at'' the speed of light. This very issue came up on the [[Talk:Main_Page#Neutrinos]]. The speeds under discussion were calculated by the use of E=mc2.

The mass of a neutrino is about 0.44x10-36kilograms. (Normally all of these things are measured in more convenient units such as Giga-electron-Volts, but that makes implicit use of E=mc2. If we don't accept that, we have to do the calculations under classical physics, using SI (meter/kilogram/second) units.) The neutrinos were accelerated to an energy of about 17GeV, or .27x10-8Joules. Using the classical formula <math>\mathrm{E} = \frac{1}{2}mv^2</math>, we get v=110x1012meters per second. This is about 370,000 times the speed of light.
However, the classical formula breaks down at speeds close to <math>c</math>, and indeed, as the speed of a massive object approaches <math>c</math>, the object's kinetic energy approaches <math>+\infty</math>.

Several scientists have gone on record stating that the neutrinos, which have mass, travel at precisely the speed of light. If true, this disproves the [[Theory of Relativity]] and the claim that '''E=mc2'''. However, it is more likely that those scientists are using language inaccurately. It is impossible to measure the speed of neutrinos precisely. What is meant is the difference between the speed of light and the speed of the neutrinos is too small to measure.

==Deducing the Equation From Empirical Observation==

While the equation was historically developed on theoretical grounds as an inevitable consequence of special relativity, it is possible to deduce it purely from empirical observation.

So, for the purposes of this section, imagine that one is in the era of "classical physics"; prior to 1900 or so. Relativity has not been invented, but, inexplicably, nuclear physics has. Imagine that the phenomena of radioactivity and nuclear fission have been observed, without any knowledge of relativity.

A well-accepted physical law of classical physics was the law of conservation of mass. This was not easy to deduce. It required careful analysis of such phenomena as combustion, in the 1700's, to eliminate the various confounding sub-phenomena that made the law difficult to see. But, by 1900, the law was well established:

:::*'''In all interactions, mass is precisely conserved.'''

For example, the mass of a TNT molecule is 227.1311 Daltons, or 227.1311 g/mol, which is, for all practical purposes, the same as the mass of its constituent Carbon, Hydrogen, Nitrogen, and Oxygen atoms. It is essentially impossible to measure the difference. The principle of conservation of mass is upheld.

But when nuclear phenomena are discovered, we notice something different. The masses of the result particles after an event (e.g. alpha decay, nuclear fission, or artificial transmutation) is measurably less than the masses of the original particle(s). With the invention of the mass spectrometer around 1920, it became possible to measure atomic weights of various isotopes with great precision.

Radium-226 decays into Radon-222 by emission of an alpha particle with an energy of 4.78 MeV.

1 kg of Radium-226 = <math>\frac{.622 \times 10^{27}}{226.0254}</math> atoms. (The numerator is Avogadro's number, and the denominator is the atomic weight of Radium-226.) This is 2.6643647 * 1024 atoms.

That number of Radon-222 atoms has mass .98226836 kg. That number of alpha particles has mass .01770863 kg.
The mass lost is .00002301 kg.

Each emitted alpha particle has energy of 4.78 MeV, or 4.78 * .1602 * 10-18 Joules. The total alpha energy from the decay of 1 kg of radium is 2.04 * 1012 Joules.

Also, Radon-222 decays into Polonium-218 by emission of an alpha particle with an energy of 5.49 MeV.

1 kg of Radon-222 = <math>\frac{.622 \times 10^{27}}{222.0176}</math> atoms. This is 2.7124611 * 1024 atoms.

That number of Polonium-218 atoms has mass .98194467 kg. That number of alpha particles has mass .01802830 kg.

The mass lost is .00002703 kg.

Each emitted alpha particle has energy of 5.49 MeV. The total alpha energy from the decay of 1 kg of polonium is 2.39 * 1012 Joules.

It looks as thought we have to rewrite the law of conservation of mass:

:::*'''In all "ordinary" interactions, mass is precisely conserved.'''
:::*'''In nuclear interactions, there is a small but measurable loss of mass.'''

:By the way, we can clearly see that atomic weights of pure isotopes are not integers, and that it has something to do with the energy released by nuclear disintegration. In retrospect, the formula E=mc² explains the non-integer character of atomic weights.

Making special cases like this is unsatisfactory, of course.

We do this for a few other interactions, including the explosion of TNT. This would include the Lithium-plus-Hydrogen and Uranium fission phenomena described above. We won't bother with the details. As observational scientists, we look for patterns in the behavior of nature. We make a table:

{| class="wikitable" border="1" cellpadding="8" cellspacing="0"
! interaction
! energy released per kg, Joules
! mass lost per kg of original substance, kg
|-
| explosion of TNT
| 4.184 * 106
| seems to be zero
|-
| alpha decay of Ra-226
| 2.04 * 1012
| .00002301 kg
|-
| alpha decay of Rn-222
| 2.39 * 1012
| .00002703 kg
|}

We plot these, and a few others, not shown, on graph paper, and find to our amazement that the relationship is linear.

For Ra, m/E = .112794118 E-16
For Po, m/E = .113096234 E-16

If this is linear, the mass defect for TNT would have been .47 * 10-10. We couldn't possibly have measured this.

So we can rewrite the rule for conservation of mass in a more satisfactory way:

:::*'''In all interactions, there is a loss of mass, equal to about .113 * 10-16 kg per Joule of energy released.'''

What we thought was exact conservation is just very nearly exact, and we hadn't been able to measure it before.

But maybe there's more. This constant has dimensions of kilograms per Joule. From high-school physics, we know that that is seconds squared divided by meters squared. That is, it is the reciprocal of the square of a velocity. We calculate that velocity. It is about 2.97 * 108 meters per second. Very close to the speed of light! Very interesting! (The calculations above were not extremely precise. The formula has been verified with great precision, but not here.)

We don't understand why (that will have to wait for the invention of relativity), but we can formulate a hypothesis:

:::*'''In all interactions, there is a loss of mass, equal to <math>\frac{1}{c^2}</math> times the amount of energy released.'''

We don't have to give the units any more, since everything is now dimensionally correct.

::There is a very interesting analogy with the discovery of [[Maxwell's Equations]]. Maxwell found an interesting relationship involving the fundamental constants <math>\epsilon\,</math> and <math>\mu\,</math> appearing in his equations. Specifically, <math>\epsilon\mu\,</math> has the dimensions of seconds squared divided by meters squared, and that:

:::::<math>\frac{1}{\epsilon\mu} = c^2</math>

::where "c" was the known velocity of light. He also showed that his equations predict electromagnetic waves, propagating at that speed.

This is a common way that scientific discoveries are made. But, as stated above, this is not how E=mc² was discovered. But it could have been. But in the event, it wasn't.

==See also==
[[Counterexamples to Relativity]]

[[essay:Rebuttal to Counterexamples to Relativity]]

== References ==
<references />
[[Category:relativity]]
[[Category:physics]]
[[Category:science]]
[[Category:Bible]]

E=mc²

2012-04-02T20:24:59Z

SamCoulter: To say that E=mc2 equates mass, energy AND the speed of light is just wrong.

'''E=mc²''' is an equation that, according to the [[theory of relativity]], describes the equivalence of matter and energy.<ref>The equation claims that the total energy ''E'' of a body in all forms is equal to that body's mass ''m'' multiplied by the square of the speed of light ''c''. In [[natural units]], where ''c'' is set to be ''1'' and without dimension, the equation becomes ''E''=''m''.</ref> In fact, no theory has successfully unified the laws governing mass (''i.e.'', gravity) with the laws governing light (''i.e.'', electromagnetism). Simply put, E=mc² is [[liberal]] claptrap. As a statement of equivalence between mass and energy, it was initially rejected at the time by the leading 20th century physicists, including [[Niels Bohr]].<ref>Bohr disagreed with Einstein's 1905 paper, and many other scientists (including Lord Rutherford and Princeton Physics Professor [[Robert Dicke]]) rejected the [[Theory of Relativity]]; Bohr later agreed to some parts of relativity but continued to defend [[quantum mechanics]] against criticism by Einstein.</ref>{{fact}}

[[Biblical Scientific Foreknowledge]] predicts that a unified theory of all the laws of physics is impossible, because light and matter were created at different times, in different ways, as described in the [[Book of Genesis]].

[[Mass]] is a measure of an object's inertia, and is directly related to the force of [[gravity]]. In contrast, the intrinsic [[energy]] of an object (such as an [[atom]]) is a function of electrostatic charge and other non-inertial forces, having nothing to do with gravity. Declaring the object's energy to be a function of inertia rather than electrostatics is an absurd and impossible attempt to unify the forces of nature, contrary to [[Biblical Scientific Foreknowledge]].

For more than a century, the claim that '''E=mc²''' has never yielded anything of value. Often it seems to be used as a redefinition of "[[energy]]" for pseudo-scientific purposes, as by the [[lamestream media]]. There have been attempts to find some justification for the equation in already understood processes involved in [[nuclear power]] generation and [[nuclear weapon]]s, and in the speculation about [[antimatter]].<ref>Tyson, Peter. "The Legacy of E=mc²." October 11, 2005. PBS ''NOVA''. http://www.pbs.org/wgbh/nova/physics/legacy-of-e-equals-mc2.html</ref>

The [[Theory of Relativity]] has never been able to mathematically derive '''E=mc²''' from first principles, and a physicist observed in a peer-reviewed paper published in 2011 that "a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory."<ref>[http://adsabs.harvard.edu/abs/2011AmJPh..79..591H Eugene Hecht: ''How Einstein confirmed E0=mc²'', American Journal of Physics, Volume 79, Issue 6, pp. 591-600 (2011)]</ref>

It has been known for a long time that radiation has a mass equivalence, which was correctly derived by [[Henri Poincare]] in 1904,<ref>[http://www.opticsinfobase.org/josa/abstract.cfm?uri=josa-42-8-540 Herbert E. Ives ''Derivation of the Mass-Energy Relation'', JOSA, Vol. 42, Issue 8, pp. 540-543 (1952)]</ref> but the equation '''E=mc²''' makes a claim far beyond that limited circumstance:

{{cquote|The equality of the mass equivalent of radiation to the mass lost by a radiating body is derivable from Poincaré’s momentum of radiation (1900) and his principle of relativity (1904).|||Herbert Ives, 1952}}

== Description for the layman ==
Ten top physicists were asked to describe in laymen's terms '''E=mc²''':<ref>[http://www.pbs.org/wgbh/nova/einstein/experts.html Lexi Krock, David Levin (editors) ''E=mc² explained'', June, 2005. PBS ''NOVA'']</ref>{{cquote|''Things that seem incredibly different can really be manifestations of the same underlying phenomena.''|||Nima Arkani-Hamed, Theoretical Physicist, Harvard University}}{{cquote|''You can get access to parts of nature you have never been able to get access to before.''|||Lene Hau, Experimental Physicist, Harvard University}}{{
cquote|''It certainly is not an equation that reveals all its subtlety in the few symbols that it takes to write down.''|||Brian Greene Theoretical Physicist Columbia University}}

== History of '''E=mc²''' ==

The [[liberal]] [[Public Broadcasting Service]] explained the history of '''E=mc²''' for its NOVA series as follows:<ref>[http://www.pbs.org/wgbh/nova/physics/ancestors-einstein.html David Bodanis ''Ancestors of E=mc²''], NOVA, Nov 10, 2005]</ref>

{{cquote|Over time, [[physicist]]s became used to multiplying an object's mass by the square of its [[velocity]] (mv²) to come up with a useful indicator of its energy. If the velocity of a ball or rock was 100 mph, then they knew that the energy it carried would be proportional to its mass times 100 squared. If the velocity is raised as high as it could go, to 670 million mph, it's almost as if the ultimate energy an object will contain should be revealed when you look at its mass times c squared, or its mc².}}

==Experimental verification==
The first experimental verification for the equation was performed 1932 by a team of an English and an Irish physicist, John Cockcroft and Ernest Walton, as a byproduct of ''"their pioneer work on the transmutation of atomic nuclei by artificially accelerated atomic particles"''<ref>[http://www.nobelprize.org/nobel_prizes/physics/laureates/1951/# Nobel Prize Organization]</ref> for which they were honored with the [[Nobel Prize]] in physics in 1951. The idea of the mass defect - and its calculation using ''E=mc²'' can be found on page 169-170 of his Nobel lecture.<ref>[http://www.nobelprize.org/nobel_prizes/physics/laureates/1951/cockcroft-lecture.pdf John D. Cockroft ''Experiments on the interaction of high-speed nucleons with atomic nuclei''], Nobel Lecture, Dec 11, 1951]</ref>

They bombarded [[Lithium]] atoms with [[protons]] having a [[kinetic energy]] less than 1 [[Electron-Volts|MeV]]. The result were two (slightly less heavy) [[α-particle]]s, for which the [[kinetic energy]] was measured as 17.3 MeV

:::::<math>{}_3^7\mathrm{Li}\, +\, {}_1^1\mathrm{H}\,\rightarrow\,2\, {}_2^4\mathrm{He}</math>

The mass of the particles on the left hand side is 8.0263 [[atomic mass units|amu]]s, the mass on the right hand side ''only'' 8.0077 amu.<ref>Gerard Piel ''The age of science: what scientists learned in the 20th century'', Basic Books, 2001, p. 144-145</ref> The difference between this masses is .00186 amu, which results in the following back-of-an-envelope calculation:

::::<math>0.00186\,\mathrm{amu} \cdot c^2 = 0.0186 \cdot 1.66 \cdot 10^{-27}\,\mathrm{kg}\cdot\left(3\cdot10^8\,\mathrm{\frac{m}{s}}\right)^2</math>
::::<math>\approx\,2.79\cdot 10^{-12} \,\mathrm{kg}\mathrm{\frac{m^2}{s^2}}</math>
::::<math>\approx \,17.3\,\mathrm{MeV}</math>

Accurate measurements and detailed calculations allowed for verifying the theoretical values with an accuracy of ±0.5%. This was the first time a nucleus was artificially split, and thereby the first transmutation of elements using accelerated particles:

Some claim that the best empirical verification of '''E=mc2''' was done in 2005 by Simon Rainville et al., as published in ''Nature'' (which is not a leading physics journal).<ref>[http://www.nature.com/nature/journal/v438/n7071/full/4381096a.html Nature 438, 1096-1097 (22 December 2005)] doi:10.1038/4381096a; Published online 21 December 2005</ref> The authors state in their article in ''Nature'' magazine that "Einstein's relationship is separately confirmed in two tests, which yield a combined result of 1−Δmc²/E=(−1.4±4.4)×10−7, indicating that it holds to a level of at least 0.00004%. To our knowledge, this is the most precise direct test of the famous equation yet described."

==A Famous Example -- Nuclear Fission of Uranium==

For most types of physical interactions, the masses of the initial reactants and of the final products match so closely that it is essentially impossible to measure any difference. But for nuclear reactions, the difference is measurable. That difference is related to the energy absorbed or released, described by the equation E=mc². (The equation applies to '''all''' interactions; the fact that nuclear interactions are the only ones for which the mass difference is measurable has led people to believe, wrongly, that E=mc² applies only to nuclear interactions.)

The [[Theory of Relativity]] played no role in this work, but later tried to retrofit the theory to the data in order to explain the explain the observed mass changes. Here is the most famous example of the mass change.

Nuclear fission, which is the basis for nuclear energy, was discovered in experiments by [[Otto Hahn]] and [[Fritz Strassman]], and analyzed by [[Lise Meitner]], in 1938.

The decay path of [[Uranium]] that figured in the ''Hahn-Strassmann experiment'' may have been this:

:235U → 140Xe + 91Sr + 4n

(The [[Xenon]] decayed within about a minute to 140Ba. There are a large number of fission paths and fission products, but they were searching for the chemical signature of [[Barium]].)

The masses of the particles are:

{| class="wikitable" border="1" cellpadding="8" cellspacing="0"
! Substance
! 235U
! 140Xe
! 91Sr
! 4 neutrons
|-
| Number of protons
| 92
| 54
| 38
| 0
|-
| Number of neutrons
| 235
| 140
| 91
| 4
|-
| Number of electrons
| 92
| 54
| 38
| 0
|-
| Mass
| 235.04393
| 139.92164
| 90.910203
| 4.03466
|}

The mass of the Uranium atom is 235.04393, and the sum of the masses of the products is 234.866503. The difference is .177427 amu, or, using the E=mc² equation, 165 million electron volts. (The generally accepted value for the total energy released by Uranium fission, including secondary decays, is about 200 million electron volts.)

The insight that the conversion from Uranium to Barium was caused by complete fission of the atom was made by Lise Meitner in December, 1938. She had the approximate "mass defect" quantities memorized, and so she worked out in her head, using the E=mc² equation, that there would be this enormous release of energy. This release was observed shortly thereafter, and the result is nuclear power and nuclear weapons.

==A Topical Example: Speed of Extremely Energetic Neutrinos==
Here is another example of the use of this formula in physics calculations. Recently there has been quite a controversy over whether neutrinos were observed traveling at a speed faster than light. Relativity doesn't allow that, and, since neutrinos have nonzero (but incredibly tiny) mass, they aren't even supposed to travel ''at'' the speed of light. This very issue came up on the [[Talk:Main_Page#Neutrinos]]. The speeds under discussion were calculated by the use of E=mc2.

The mass of a neutrino is about 0.44x10-36kilograms. (Normally all of these things are measured in more convenient units such as Giga-electron-Volts, but that makes implicit use of E=mc2. If we don't accept that, we have to do the calculations under classical physics, using SI (meter/kilogram/second) units.) The neutrinos were accelerated to an energy of about 17GeV, or .27x10-8Joules. Using the classical formula <math>\mathrm{E} = \frac{1}{2}mv^2</math>, we get v=110x1012meters per second. This is about 370,000 times the speed of light.
However, the classical formula breaks down at speeds close to <math>c</math>, and indeed, as the speed of a massive object approaches <math>c</math>, the object's kinetic energy approaches <math>+\infty</math>.

Several scientists have gone on record stating that the neutrinos, which have mass, travel at precisely the speed of light. If true, this disproves the [[Theory of Relativity]] and the claim that '''E=mc2'''. However, it is more likely that those scientists are using language inaccurately. It is impossible to measure the speed of neutrinos precisely. What is meant is the difference between the speed of light and the speed of the neutrinos is too small to measure.

==Deducing the Equation From Empirical Observation==

While the equation was historically developed on theoretical grounds as an inevitable consequence of special relativity, it is possible to deduce it purely from empirical observation.

So, for the purposes of this section, imagine that one is in the era of "classical physics"; prior to 1900 or so. Relativity has not been invented, but, inexplicably, nuclear physics has. Imagine that the phenomena of radioactivity and nuclear fission have been observed, without any knowledge of relativity.

A well-accepted physical law of classical physics was the law of conservation of mass. This was not easy to deduce. It required careful analysis of such phenomena as combustion, in the 1700's, to eliminate the various confounding sub-phenomena that made the law difficult to see. But, by 1900, the law was well established:

:::*'''In all interactions, mass is precisely conserved.'''

For example, the mass of a TNT molecule is 227.1311 Daltons, or 227.1311 g/mol, which is, for all practical purposes, the same as the mass of its constituent Carbon, Hydrogen, Nitrogen, and Oxygen atoms. It is essentially impossible to measure the difference. The principle of conservation of mass is upheld.

But when nuclear phenomena are discovered, we notice something different. The masses of the result particles after an event (e.g. alpha decay, nuclear fission, or artificial transmutation) is measurably less than the masses of the original particle(s). With the invention of the mass spectrometer around 1920, it became possible to measure atomic weights of various isotopes with great precision.

Radium-226 decays into Radon-222 by emission of an alpha particle with an energy of 4.78 MeV.

1 kg of Radium-226 = <math>\frac{.622 \times 10^{27}}{226.0254}</math> atoms. (The numerator is Avogadro's number, and the denominator is the atomic weight of Radium-226.) This is 2.6643647 * 1024 atoms.

That number of Radon-222 atoms has mass .98226836 kg. That number of alpha particles has mass .01770863 kg.
The mass lost is .00002301 kg.

Each emitted alpha particle has energy of 4.78 MeV, or 4.78 * .1602 * 10-18 Joules. The total alpha energy from the decay of 1 kg of radium is 2.04 * 1012 Joules.

Also, Radon-222 decays into Polonium-218 by emission of an alpha particle with an energy of 5.49 MeV.

1 kg of Radon-222 = <math>\frac{.622 \times 10^{27}}{222.0176}</math> atoms. This is 2.7124611 * 1024 atoms.

That number of Polonium-218 atoms has mass .98194467 kg. That number of alpha particles has mass .01802830 kg.

The mass lost is .00002703 kg.

Each emitted alpha particle has energy of 5.49 MeV. The total alpha energy from the decay of 1 kg of polonium is 2.39 * 1012 Joules.

It looks as thought we have to rewrite the law of conservation of mass:

:::*'''In all "ordinary" interactions, mass is precisely conserved.'''
:::*'''In nuclear interactions, there is a small but measurable loss of mass.'''

:By the way, we can clearly see that atomic weights of pure isotopes are not integers, and that it has something to do with the energy released by nuclear disintegration. In retrospect, the formula E=mc² explains the non-integer character of atomic weights.

Making special cases like this is unsatisfactory, of course.

We do this for a few other interactions, including the explosion of TNT. This would include the Lithium-plus-Hydrogen and Uranium fission phenomena described above. We won't bother with the details. As observational scientists, we look for patterns in the behavior of nature. We make a table:

{| class="wikitable" border="1" cellpadding="8" cellspacing="0"
! interaction
! energy released per kg, Joules
! mass lost per kg of original substance, kg
|-
| explosion of TNT
| 4.184 * 106
| seems to be zero
|-
| alpha decay of Ra-226
| 2.04 * 1012
| .00002301 kg
|-
| alpha decay of Rn-222
| 2.39 * 1012
| .00002703 kg
|}

We plot these, and a few others, not shown, on graph paper, and find to our amazement that the relationship is linear.

For Ra, m/E = .112794118 E-16
For Po, m/E = .113096234 E-16

If this is linear, the mass defect for TNT would have been .47 * 10-10. We couldn't possibly have measured this.

So we can rewrite the rule for conservation of mass in a more satisfactory way:

:::*'''In all interactions, there is a loss of mass, equal to about .113 * 10-16 kg per Joule of energy released.'''

What we thought was exact conservation is just very nearly exact, and we hadn't been able to measure it before.

But maybe there's more. This constant has dimensions of kilograms per Joule. From high-school physics, we know that that is seconds squared divided by meters squared. That is, it is the reciprocal of the square of a velocity. We calculate that velocity. It is about 2.97 * 108 meters per second. Very close to the speed of light! Very interesting! (The calculations above were not extremely precise. The formula has been verified with great precision, but not here.)

We don't understand why (that will have to wait for the invention of relativity), but we can formulate a hypothesis:

:::*'''In all interactions, there is a loss of mass, equal to <math>\frac{1}{c^2}</math> times the amount of energy released.'''

We don't have to give the units any more, since everything is now dimensionally correct.

::There is a very interesting analogy with the discovery of [[Maxwell's Equations]]. Maxwell found an interesting relationship involving the fundamental constants <math>\epsilon\,</math> and <math>\mu\,</math> appearing in his equations. Specifically, <math>\epsilon\mu\,</math> has the dimensions of seconds squared divided by meters squared, and that:

:::::<math>\frac{1}{\epsilon\mu} = c^2</math>

::where "c" was the known velocity of light. He also showed that his equations predict electromagnetic waves, propagating at that speed.

This is a common way that scientific discoveries are made. But, as stated above, this is not how E=mc² was discovered. But it could have been. But in the event, it wasn't.

==See also==
[[Counterexamples to Relativity]]

[[essay:Rebuttal to Counterexamples to Relativity]]

== References ==
<references />
[[Category:relativity]]
[[Category:physics]]
[[Category:science]]
[[Category:Bible]]

F-22 Raptor

2012-04-02T07:09:55Z

SamCoulter: Supercruise is not a unique ability.

[[Image:F-22_raptor.jpg|right|300px|thumb|F-22 Raptor]]

The '''F-22 Raptor''' is a [[stealth]] fighter produced by [[Lockheed Martin]]. It is capable of air-to-air combat, ground attack, electronic warfare and signals detection. It was originally developed to counter advances in technology in aircraft developed by the [[Soviet Union]] and replace the F-15 by incorporating the latest in stealth features and propulsion technology. However, the extremely high unit cost of the aircraft has meant successive and substantial cuts to the number of F-22s to be built. At present only 183 F-22s will be built. This will mean keeping the F-15 fleet in service for the foreseeable future.

The Raptor is powered by two Pratt & Whitney F119-PW-100 engines that produce in excess of 30,000 pounds of thrust each and posess 2D [[Thrust Vectoring|thrust vectoring]] capabilities. They give the Raptor the ability to "supercruise" at [[speed of sound|supersonic]] speeds without the use of [[afterburner]]s as required by previous [[turbojet]] designs. The aircraft has an internal armament bay which holds [[air-to-air missile]]s and can carry various small bombs internally or on pylons, and has a 20mm Gatling [[Gun]].

The F-22 Raptor evolved from the YF-22 experimental design produced for the [[United States Air Force|US Air Force]]'s Advance Tactical Fighter (ATF) competition in which the Lockheed Martin design defeated the rival [[Northrup Grumman]] designed YF-23.

[[Category:Aircraft]]
[[Category:Military Aircraft]]
[[Category:United States Air Force]]

Talk:E=mc²

2012-04-02T06:41:46Z

SamCoulter: /* Niels Bohr */

Far Eastern Republic

2012-04-02T06:38:42Z

SamCoulter: Creating a real (but short as yet) article to replace the parody one.

The '''Far Eastern Republic''' was a short-lived state that existed in the Russian Far East from 6 April 1920 to 15 November 1922. Although nominally independent it was really controlled by the Russian socialist republic, and was intended mostly as a buffer zone between Russia and the territory which [[Japan]] had occupied during the [[Russian Civil War]], as well as remaining anti-communist White forces. The recognition of the Republic by Japan ended a threat to the east of Russia from the Japanese army. [[Red Army]] units, claiming to be "The Army of the Far Eastern Republic," operated from the Republic against White forces in the east. The civil war ended on 25 October 1922 with the Republic's "Army" capturing Vladivostok, and three weeks later the Far Eastern Republic was merged with the Russian Soviet Federative Republic, becoming part of the [[USSR]].

The first capital of the Far Eastern Republic was Verkhneudinsk; in October 1920, when pro-White Cossacks withdrew from [[Chita]], it moved to that city and remained there until the end of the Republic.

[[Category:Countries]]

Talk:E=mc²

2012-04-02T06:16:48Z

SamCoulter: /* Niels Bohr */

Fremantle

2012-04-01T22:25:07Z

SamCoulter:

{{City
|picture =
|picture2 =
|map =
|country =Australia
|state =Western Australia
|region =Perth
|settled =1829
|charter =
|population =24,835
|area =
|density =
|mayor =Brad Pettitt
|demonym =
}}

Fremantle is a city and port of [[Western Australia]] adjacent to [[Perth, Australia|Perth]].

[[Category:Western Australian Cities and Towns]]

Fremantle

2012-04-01T22:24:35Z

SamCoulter:

{{City
|picture =
|picture2 =
|map =
|country =Australia
|state =Western Australia
|region =Perth
|settled =1829
|charter =
|population =24,835
|area =
|density =
|mayor =Brad Pettitt
|demonym =
}}

Fremantle is a city and port of [[Western Australia]] adjacent to [[Perth]].

[[Category:Western Australian Cities and Towns]]

Bed bug

2012-04-01T22:23:02Z

SamCoulter: /* Description */

{{Taxonomy
|name=Bedbug
|image=Bed bug.jpg
|caption=
|domain=Eukaryota
|kingdom=Animalia
|subkingdom=Bilateria
|branch=Protostomia
|superphylum=Panarthropoda
|phylum=Arthropoda
|subphylum=Mandibulata
|infraphylum=Atelocerata
|microphylum=
|superdivision=
|division=
|subdivision=
|superclass=Panhexapoda
|class=Insecta
|subclass=Dicondylia
|infraclass=Pterygota
|superorder=Condylognatha
|order=Hemiptera
|suborder=Heteroptera
|infraorder=Cimicomorpha
|superfamily=Cimicoidea
|families=
|family=Cimicidae
|subfamily=
|supertribe=
|tribe=
|subtribe=
|genera=
|genus=Cimex
|subgenus=
|species=C. lectularius
|binomialname=
|syn=
|sub=
|alt=
|regionimg=
|pop=
|conservation=
}}
A '''Bed bug''' is any of approximately 75 species of a small parasitical insect of the family Cimicidae, particularly the common bed bug (''Cimex lectularius'') of the temperate areas of the northern hemisphere. Bed bugs are an ecto[[parasite]], characterized by the nocturnal feeding of blood from man or warm-blooded animals.

==Description==
Bed bugs are approximately a fifth to a quarter of an inch (4-5 millimeters) long. They are broad and flat in shape, brown in color, and glisten from a distinctive, smelly oil secreted from scent glands. The wings are scale-like and vestigial. Females lay about 200 or more eggs during reproductive periods, and can lay around a thousand during several such periods within a year.

Bed bugs feed chiefly at night;<ref> "Bed bugs hide during the day and typically feed at night." [http://npic.orst.edu/pest/bedbug.html National Pesticide Information Center - Bed Bugs] </ref> in the wild they feed on the blood of birds and small mammals, and within human-inhabited areas they feed upon domesticated animals as well as man. They retreat to their hiding places during the daytime, using up to several days in which to digest their food.<ref>http://www.epa.gov/pesticides/bedbugs/</ref> Most bed bugs live full time within eight feet of where humans sleep. When hiding they are generally found in bedding and mattresses (hence the name), nearby furniture, carpeting, within dressers and clothes, curtains, and cushions.

==History==
Bed bugs have been plaguing humans since ancient times. Aristophanes wrote “The Clouds” in 423 B.C. referring to bed bugs living in a couch. Eva Panagiotakopulu, a University of Sheffield archaeologist, found that bed bugs have lived with man for at least 3500 years. <ref>http://www.stephentvedten.com/18_Bed_Bug_Control.pdf</ref>

Bed bugs spread throughout Europe and Asia, reaching Italy by 100 A.D., China by 600 A.D., and Germany and France in the 1200s and 1400s, and are mentioned in medieval European texts and in classical Greek writings back to the time of Aristotle. The earliest record of bed bugs in England is that of 1583. Migrating with European explorers to America, infestations first arose in busy seaport towns, and later on appearing farther inland. This pattern that was repeated in the late 1990s, with the reports of infestations first coming from such gateway cities as [[New York]], [[Los Angeles]], [[San Francisco]] and [[Miami]]. <ref>http://www.pctonline.com/Article.aspx?article_id=37608</ref> A 1920s guide advises treating infested mattresses with "high-test gasoline" and a 1935 guide prescribed powdered calcium cyanide.

In the 1800's, bed bugs were significant pest in parts of both the United States and the United Kingdom. Government Entomologist Dr. Riley, PhD, described the ubiquity of bed bugs in 1889:
{{cquote|I have occasionally met with a favored individual who had never seen a bed bug; but such fortunate people are rare and there are very few housekeepers who have not, by accident perhaps, or through slovenly servants, made the intimate acquaintance of the ubiquitous pest…. It’s odor and the effects of its bites are universally known, and the word “bed buggy” has entered our literature as descriptive of a particular class of odors.<ref>[http://books.google.com/books?id=j1Y7AAAAMAAJ&lpg=PA25&ots=b_vavYWYXE&dq=Entomologist%20%20Dr.%20Riley%2C%20PhD%20bed%20bugs&pg=PA25#v=onepage&q&f=false Good Housekeeping Journal], May 25. 1889, p. 25</ref>}}

In the 1930s there were large sections of London where every house was infested, resulting in an investigation by the Ministry of Health and the Public Health Act of 1936 which required councils to take action. Toxic fumigation using sulfur dioxide (sulfur candles) or hydrogen cyanide, are reported to have helped reduce infestations by up to 80% in one town under study. Before [[World War Two]] the primary treatment was either heat or fumigation, and barriers behind walls were even constructed to prevent bed bugs from crawling up, while harborage was encouraged using wire mesh below, which periodically would be burned with a blow torch. Some state laws once required that the furniture be tagged as fumigated before it could be resold. DDT became the primary insecticide beginning in 1945, and declining numbers overall continued from the late 30s through 1980s until the recent resurgence.

Diligence and use of the pesticide DDT in the 1950s and broad-based pesticides also resulted in a dramatic reduction of bed bugs overall in the United States, though significant reservoirs of bed bug infestation persisted
through this period, particularly in inner-city areas. During the bed bug recession period of the 1950s, infestations were
mainly found in homeless shelters, and prisons, while during in the period 1967-73, about 61% of infestations were found in domestic residential property, while about 25% were in institutional settings.<ref> [http://www.google.com/url?sa=t&source=web&cd=15&ved=0CI8BEBYwDg&url=http%3A%2F%2Fwww.icup.org.uk%2Freports%255CICUP911.pdf&ei=_7fkTMOcM4X7lwfpgvC1Cw&usg=AFQjCNHAv-kTckL-i94tT9QVwttxl-L2YQ&sig2=nWe_LzSDoRelL73t_I6ljg ''Bed bugs (Hemiptera: Cimicidae): An evidence-based analysis of the current situation,'' Proceedings of the Sixth International Conference on Urban Pests], p. 9, 2008</ref><ref>[http://www.birc.org/MarApril2007.pdf ''Bed Bugs bounce back'', IPM Practitioner], March/April 2007</ref><ref>>http://www.faqs.org/periodicals/201006/2054573271.html</ref>

A current resurgence of bed bug infestations appears to have started almost synchronously in the late 1990’s in Europe, the United States, and in Australia. 2007 data from a survey of pest control companies in the latter country indicated a 4500% increase over a seven year period.<ref>''Bed bugs (Hemiptera: Cimicidae): An evidence-based analysis of the current situation,'' Proceedings of the Sixth International Conference on Urban Pests, p. 1, 2008</ref><ref>Doggett S.L. and R.C. Russel, ''Bed bugs: Recent Trends and developments,'' Australian </ref>

According to a new survey from the National Pest Management Association (NPMA), one out of five Americans has had a bed bug infestation in their home or knows someone who has encountered bed bugs at home or a hotel.<ref>http://www.pctonline.com/bed-bugs-in-america.aspx</ref> The University of [[Kentucky]], which has provided much research on bed bugs, and the United States' National Pest Management Association reported that 95% of 521 U.S. pest management companies reported encountering a bed bug infestation in the past year. <ref>Potter MF, et al. ''Bugs Without Borders—Executive Summary'', Fairfax, VA:National Pest Management Association, Inc. (2010)</ref><ref>http://www.npmapestworld.org/documents/bbsurveyexecsummaryjuly26.pdf</ref> Canada reported similar numbers (98%), as well as Europe (92%), and Africa/Middle East (90%). In contrast, prior to the year 2000 only 25% of U.S. survey respondents reported bed bug infestations. In addition, 76 percent of survey respondents affirmed that bed bugs are the most difficult pest to treat, more so than cockroaches, ants and termites. "The results of the global study suggest that we are on the threshold of a bed bug pandemic, not just in the United States, but around the world," said Missy Henriksen, vice president of public affairs for NPMA. The global survey included pest control firms in Latin America and Asia, where stronger, organophosphate chemicals are permitted.<ref>[http://www.pestworld.org/bedbug National Pest Management Association (NPMA), July 26, 2010]</ref><ref>BBC New Magazine, ''Don't let the bedbugs bite'', 2 September 2010</ref> In the United States, state and local government officials say they are being overwhelmed with complaints of bed bug infestations.

===Causes of resurgence ===

The prime causes of the increased bed bug infestations are yet debated. Social aspects such as increased travel immigration and population density, clutter, etc. and even climate change (dismissed) have all been blamed, as well as changing pest control products and methods and the development of strains of bed bugs that are resistant to insecticides.

As regards the latter, this theory for the cause of bed bug resurgence postulates that use of DDT and its successors ([[DDT ban|DDT was banned]], effective Jan 1, 1973) on household pests such as the German [[cockroach]] also killed bed bugs before they became established in a home. After roaches developed resistance to insecticides being used, hydramethylnon bait was introduced in the early 1980s, which provided superior effectiveness. This resulted in a switch from spraying and dusting and baseboard treatment which also controlled bed bug populations, to the use of baits and Insect Growth Regulators (IGRs) in the early 1990s. In addition, many more broad spectrum residual pesticides besides DDT were banned or heavily restricted in the United States and many developing countries during the past few decades, due to the danger of harmful effects to humans. These included the organophosphates, ''chlorpyrifos'' (Dursban, and to which bed bugs show no resistance to) and ''diazinon'', and the carbamate ''propoxur'' (Baygon, also deadly) which had became the indoor insecticides of choice to control cockroaches and most other pests. Replacing them were pyrethroid insecticides, all of which bed bugs have now developed resistance to.<ref>[http://waronbedbugs.blogspot.com/2007/03/tracing-cause-of-bedbug-epidemic.html The War on Bedbugs]</ref><ref>[http://web.extension.illinois.edu/ipr/i6046_829.html#2 ''Bed Bug Increase Due to Pesticide Regulation?''], University of Illinois Extension, Illinois Pesticide Review, May, 2009</ref>

Dr. Michael Potter, a professor and urban entomologist at the University of Kentucky, stated, “What made this problem pretty much go away for decades was the availability of very effective, long-lasting insecticides that were cheap, affordable and available not only to pest control companies but to consumers over the counter,” he said. Having conducted a study comparing older pesticides to those used today, he found that insecticides in two families, organophosphites and carbamates, are especially effective at eradicating bed bugs. While some of these compounds can be found in insect traps or spot treatments, most are no longer permitted for use by pest-control professionals in North America.<ref>''FAQ about Bedbugs: Pesticide bans have led to a resurgence of the dreaded pest,'' National Post, August 7, 2010</ref>

In the light of colonies from all over the United States having a very high resistance to pyrethroid-type pesticides, some believe that these bugs likely came from a region where those pesticides are used extensively around beds. Entomologist Coby Schal believes that it is likely the bed bugs found in U.S. hotels, homes and apartments may be the progeny of bugs which came from areas of the world such as Africa, Southeast Asia or South America, in which bugs might have often encountered pyrethroid-treated bed nets, designed to prevent biting by malaria-carrying mosquitoes, and thus developed resistance to this class of insecticides.

An additional problem as a result of to minimal problems with bed bugs overall in the United States, was that research initiatives on bed bugs ceased in the 1950s.<ref>[http://www.cals.ncsu.edu/agcomm/news-center/media-releases/bed-bugs-target-of-research-extension-efforts ''Bed bugs target of research, extension efforts''], N.C. State University </ref>

With many factors possibly contributing to the exponential rise in bed bug infestations, it is difficult to know what physically is the primary caused of the current bed bug epidemic. Potter also, stated, "The bottom line is it may be a convergence of all those factors, but none of that really explains the rapid increase in recent years," said
<ref>http://waronbedbugs.blogspot.com/2007/03/tracing-cause-of-bedbug-epidemic.html</ref>

==Life and behavior==
[[File:Bed-bugs-group.jpg|right]]
===Reproduction, development and longetivity===
Like stable flies, sucking lice, bed bugs, mosquitoes, true bugs, and aphids, bed bugs have a piercing-sucking mouthpart consists of a long slender tube which is forced into plant or animal tissue to suck out fluids or blood.<ref>ttp://www.ksre.ksu.edu/library/entml2/s12.pdf</ref> Like mosquitoes and certain other insects, bed bugs inject an anticoagulant into their host before extracting blood, which results in a burning itching in persons who allergically react to the anticoagulant.

Male bed bugs grab and attempt to mate with any other bed bug that has had a full meal of blood recently, using its hypodermic reproductive appendage. Females grow a mass of the kinds of cells associated with immune defense in the the abdominal area most commonly pierced by the male. Male bed bugs lack this, and when [[homosexual]] mating attempts are made upon a male then the victim releases a blend of chemicals known as the bed bug alarm [[pheromone]]. This recent discovery has resulted in some bed bug insecticides containing the pheromone. <ref>''Scent of alarm identifies male bed bugs,'' Science news, November 21st, 2009; Vol.176 #11</ref> Bed bugs also release this substance when they are frightened, the smell of which has been described as a sickening sweet odor or as rotting raspberries.<ref>''The Best Control or Bed Bugs'', cp. 18</ref> Bed bugs in an all-male confinement experiment had reduced longevity compared to singly held males.<ref>The Association for the Study of Animal Behaviour, Volume 78, Issue 6, December 2009, Pages 1471-1475</ref>

Males will mate with females much more often (roughly 20 times more) than necessary for fertilization of eggs and as a result the females live about 25% less long than they would otherwise.<ref>http://newyorkvsbedbugs.org/2010/02/16/laundry-and-the-motivating-power-of-the-bed-bug-web-qa-with-richard-naylor/</ref>

An impregnated female bed bug will produce between 1- 7 eggs per day (but up to 20) for about 10 days after a single blood meal, and will then have to feed again to produce more eggs. The female bed bug lays her eggs in cracks and crevices in the vicinity of the host (and she seem to prefer wood over metal and plastic) and cements them firmly in position. The eggs are sticky, and able to adhere to most anything, and are yellowish-white, approximately 1 millimeter (1/25 inch) in length (a little larger than a speck of dust) and are covered with a protective layer, so that immersion in water does not kill them as would adult bed bugs. The estimated total number of eggs which may be laid by one female is estimated to be from about 113 to as high as 345. Under optimal conditions (between 70° F and 90° F), and with regular feeding, a bed bug population can double every 16 days. At room temperature (average 70° F), 60 percent of the eggs will hatch when they are 6 days old; around 90 percent will have hatched by the time they are 9 days old. Once born, the bed bug will go through five growth (molting) stages (shedding the exoskeleton) as ''nymphs''---- each nymphal stage requiring a blood meal and each time shedding its skin ---- before it becomes an adult, and able to reproduce. After hatching the color of the bed bug is like that of straw and no bigger than a pinhead, and which begin to feed immediately.

A second stage nymph is about the size of apple seed, and as it fills itself with blood then its color goes from white to bright red. Nymphal stages last from about 4 days to 24 days based on temperature and other environmental conditions. In ideal temperatures (about 70-90°F), the bugs go from birth to adulthood in a month to six weeks. Studies show that under favorable conditions more than 80 percent of all eggs survive to become reproductive adults. Adults are approximately 3/16-inch long and reddish-brown, with oval, flattened bodies.<ref>[http://docs.google.com/viewer?a=v&q=cache:jWEA45GhZtwJ:www.vdacs.virginia.gov/pesticides/pdffiles/bb-biology1.pdf+bed+bugs+die+low+temparute&hl=en&gl=us&pid=bl&srcid=ADGEESgoUkUjwUgf3XpWoxVK-_QO9xkbiPwqXep1_Cpmb5zYPTsAM2xEx4ut4cZ77-E-VC_MH4AfYYl4PMYD6H5NMWs2pdQB_kDwSWNkbKksgrNbrILWpSjo0kJ5NZfDa3xjchKFPW6X&sig=AHIEtbQ1fndzU5d9KHcHVwHe-zqvwtNqNA Dini M. Miller, Ph.D., Andrea Polanco, ''Bed Bug Biology and Behavior''], Department of Entomology, Virginia Tech Department of Entomology, Virginia Tech</ref ><ref>[http://www.google.com/url?sa=t&source=web&cd=6&ved=0CEgQFjAF&url=http%3A%2F%2Fwww.stephentvedten.com%2F18_Bed_Bugs.pdf&ei=o7DkTLWOIIGBlAf0tLW-CQ&usg=AFQjCNGPkGFo2XVKR8gyNsJSixC1UybqDw&sig2=88mOnHvsosbL2UrImkagMQ ''The Best Control or Bed Bugs''], cp. 18</ref>>

Cooler temperatures and less blood meals will slow bed bug development down, and at 55 degrees bed bug development and egg production stops,<ref>http://www.bedbugsite.com/faq.php</ref> but much lower temperatures are required to kill them, as adult laboratory bed bugs can survive without feeding for over a year in temperatures around 50°F, and the nymphs can survive for 3 months. In the laboratory at 10% humidity and 44°F degrees, bed bugs have survived as long as 560 days without a blood meal.<ref>http://www.bedbugbattleplan.com/content/view/19/35/ The Life Cycle of the Bed Bug</ref>

The original source of longevity statistics appears to be from a study from A.W Bacot in 1914, in which he reported that "After a single meal one newly hatched bug out of three lived for 270 days; while, out of 30 immature bugs in various stages of development, 7 were living and able to feed after a fast of 18 months."<ref>http://newyorkvsbedbugs.org/2009/08/18/they-are-also-able-to-withstand-chilling-thawing-rechilling-and-again-thawing/</ref> However, while this
may have been true for individual bed bugs in the UK living at very low temperatures, research showed that on average, modern bed bugs (at any life stage) collected from homes in the United States and held at room temperature without feeding, would die within 70 days. It is thought that these bed bugs were dying of dehydration, rather than starving to death. Also, the most recent studies indicate that a well-fed adult bed bug held at room temperature (avg. 70° F), will live between 99 and 300 days in the laboratory.<ref>Dini M. Miller, Ph.D., Andrea Polanco, ''Bed Bug Biology and Behavior''], p. 4, Department of Entomology, Virginia Tech Department of Entomology, Virginia Tech</ref> <ref>Science News, ''Do-it-yourself bed-bug detector'', January 16th, 2010 </ref><ref>http://bug-a-pest.com/Bedbug.pdf</ref>

===Feeding, nesting and travel===

Adults may feed many times throughout their lifespan, every 3-7 days varying with temperature and other factors.<ref>''The Best Control or Bed Bugs''</ref> When bed bugs bite, like mosquitoes, they inject an anesthetic that prevents the host from feeling the bite, and an anticoagulant for blood flow. Bed bugs are normatively nocturnal, and though they can bite during the day or with light, they usually occur while people are sleeping, usually when the host is in their deepest part of sleep, most typically 3-5AM. Feeding takes three to 15 minutes, depending on maturity, and immediately after feeding the bug crawls off to digest their meal in a safe place. The bite sites are usually small, pinprick-sized lesions that may or may not become inflamed, though often the human host finds that they itch. Bite marks can be random or in a straight line.<ref>http://www.cdc.gov/nceh/ehs/Publications/Bed_Bugs_CDC-EPA_Statement.htm</ref><ref>[http://www.michigan.gov/documents/emergingdiseases/Bed_Bug_Manual_v1_full_reduce_326605_7.pdf MICHIGAN MANUAL FOR THE PREVENTION AND CONTROL OF BED BUGS]</ref> The human bedbug has glands on its body which secrete an odorous oily material, leaving a room that is heavily infested with a characteristic odor. After feeding the bed bug defecates, which material appears as small black specks on mattresses, sheets or in the vicinity of their hiding places.<ref>http://plantboard.arkansas.gov/PlantIndustry/Documents/MP442Class2HouseholdPestRodent.pdf</ref>

Bed bugs do not have nests like ants or bees, but do tend to congregate in habitual hiding places. They are attracted by the carbon dioxide and (secondarily) the heat that people generate, and they will feed only through a membrane.<ref>[http://www.faqs.org/periodicals/201006/2054573271.html ''Bed Bugs: The Pesticide Dilemma'']</ref> Bed bugs can travel at the rate of 3 feet per minute and 100 feet in one night, but they tend to live within 8 feet of where people sleep. They appear to have an affinity for wood and fabric more so than metal or plastic. Bed bugs hide in such places as mattresses seams, box springs, bed frames and headboards, dresser tables, cracks or crevices, baseboards, behind wallpaper, and under any clothes, clutter or objects around a bed. Their small flat bodies allow them to fit into the smallest of spaces and they can remain in place for long periods of time, even without a blood meal. Bed bugs can be transported from place to place by people as they travel, and eggs and instar nymphs are especially hard to detect.

In addition to bites, bed bugs are made evident by areas marked by dark spotting and staining, which is the dried blood excrement of the bugs. Dark spots of dried bed bug excrement are often present along mattress seams or wherever the bugs have resided. Also present are eggs and eggshells, the brownish molted skins of maturing nymphs and the bugs themselves, though these may be hidden more deeply. Less often one may see rusty or reddish blood smears on bed sheets or mattresses from crushing an engorged bed bug. Some companies are beginning to use canines for detecting infestations, which, if properly trained, can be very effective.<ref>[http://www.ca.uky.edu/entomology/entfacts/ef636.asp BED BUGS]</ref>

Although bed bugs have the ability to drink water through their proboscis, they appear to do so rather sparingly, as they rely on blood to replenish water stores; none of the bed bugs examined in any stage had the capacity to absorb water vapor. As the bed bugs mature they need less water.<ref>http://www.ajtmh.org/cgi/reprint/76/5/987.pdf</ref>

Bed bugs can run at a rate of 1 inch per second/4ft. per minute, and can climb most walls and cling to ceilings, but are thought to be unable to detect a human presence beyond 5 feet.<ref>http://www.birc.org/MarApril2007.pdf</ref> As bed bugs become active when sensing human presence, in the 1960s the US Army considered them for use in a portable insect ambush detector or a stationary intrusion detector device.<ref>http://handle.dtic.mil/100.2/AD837100</ref>

===Effects of climate on longevity===

Bed bugs are remarkably resistant in almost every sense of the word, and are comfortable within all but the extremes of most inhabitable climates. They have a wide humidity tolerance range but tolerate dry climates better than humid. They can adapt to a wide range of temperatures, and remain active in a temperature as low as 44°F, as long as they are held at an intermediate temperature for a few hours first. Bed bugs have evidenced that can survive freezing temperatures (32°F) for days and tolerate much lower temperatures (5°F) for short periods.<ref> http://www.michigan.gov/documents/emergingdiseases/Bed_Bug_Manual_v1_full_reduce_326605_7.pdf</ref> <ref>[http://www.afpmb.org/pubs/tims/TG44/TG44.pdf Armed Forces Pest Management Board, TECHNICAL GUIDE NO. 44, ''Bed Bugs - Importance, Biology, and Control Strategies,''] p. 9</ref> Bed bugs of all stages of maturity can survive at least 5 days at 14°F, but all stages die after exposure to -26°F for 15 minutes. The upper lethal temperature for nymphs and adults is 113°F and 115°F for eggs.<ref>http://www.birc.org/MarApril2007.pdf</ref>

==Health issues==
Bed bugs have been found to be infected with over 25 disease organisms such as plague, relapsing fever, tularemia and Q fever,<ref> [http://www.bedbugsite.com/faq.php Budbegs FQA]</ref> but are not known to transmit disease to humans, despite possible associations with hepatitis B and Chagas disease. However, their bites often do leave red itchy welts on human skin due to an allergic reaction.<ref>[http://ehp03.niehs.nih.gov/article/fetchArticle.action?articleURI=info%3Adoi%2F10.1289%2Fehp.118-a429 ''Invasion of the Bedbugs'']</ref>

An addition issue is the stress caused by bed bugs. Respondents of one survey reported that 99% of clients who have had bed bugs were “upset and concerned” while 76 percent of surveyed respondents also reported that bed bugs are the most difficult pest to treat, more so than cockroaches, ants and termites.<ref>2010 Comprehensive Global Bed Bug Study</ref>

==Control and eradication==

Eradication of bed bugs often necessitates integrated pest management (IPM), which includes

*Vacuuming the mattress, especially tucks and along seams. Kill any live bugs using a spray of 70 or higher percent isopropyl alcohol.
*Isolating the bed from walls and coating the bed legs for 3 to 5 inches with petroleum jelly, and or encasing the bed legs in a water filled container to stop bed bugs (who can jump, but not swim) from crawling up into the bed is typically recommended. Box spring encasements are also promoted.
*Sealing cracks and crevices which bed bugs can hide and lay eggs (which can be as small as the width of a credit card) around the area in which bits occur.
*Washing bedding and clothes in 140°F degree water and drying at high heat, especially the latter which can be used alone.
*Dusting with pesticides such as silica or diatomaceous earth.
*Judicious use of effective chemical pesticides, beginning with non-repellent types (such as Phantom, where legal).

===Chemical insecticides===
[[Chemical]] [[Insecticide]]s known to control and kill bed bugs fall into four main different categories, with first being organochlorines, which include DDT. being powerful but also the most notorious class of pesticides is aldrin, chlordane, endrin, endosulfan, dicofol and others. These are typically effective against a broad spectrum of insects, and are relatively low in toxicity to mammals, but they often remain in the environment long after application (especially DDT) and in organisms long after exposure, which led to most of them of them being banned or their use being very restricted.

The second class is the organophosphates (OPs), which include parathion, malathion, diazinon, dichlorvos, chlorpyrifos, pirimiphos methyl (Actellic). These work by effecting over-stimulation of the nervous system which eventually causes the insect to die. While these break down much faster than organochlorines, they have much greater acute toxicity and can effects mammals as well as insects. After the passing of of the Food Quality Protection Act, a 10-year review by the [[Environmental Protection Agency]] (EPA)resulted in 17 of of the 49 of the OP pesticides which had been registered for use in pest control being banned or heavily restricted, including the popular household pesticides diazinon and chlorpyrifos.

The third class is that of carbamates, which include carbofuran, aldicarb (Temik), chlorfenapyr (Propoxur), carbaryl (Sevin), and bendiocarb (Ficam). Carbamates typically degrade faster than organochlorines, and some of them can be just as lethal, while others are seen as less toxic. The use of such is restricted by the EPA, and which has banned the highly toxic carbofuran, while the manufacturer of bendiocarb has voluntarily cancelled its registration, which can cost up to $100 million in order to obtain EPA approval.

Regarding the above classes being registered and intended for bedbug control (among other insects), on researcher (2007) found no organochlolines, and out of 341 organophosphates products, most had been cancelled, and only 24 products were available, with the active ingredient being either malathion or DDVP (dichlorvos), while out of 266 carbamate products, only 76 were still available, with the active ingredient being carbaryl.<ref>[http://waronbedbugs.blogspot.com/2007/03/tracing-cause-of-bedbug-epidemic.html "Tracing the cause of the bedbug epidemic]," The War on Bedbugs, Monday, March 19, 2007</ref>

The carbamate chlorfenapyr (marketed as ''Phantom'') is a relatively new non-pyrethrin material, which some claim has an overall greater long term effectiveness than pyrethrins,<ref>http://newyorkvsbedbugs.org/2010/08/12/the-workmanlike-chlorfenapyr</ref> with bed bug resistance being only a recent development.<ref>http://web.extension.illinois.edu/ipr/i6046_829.html#2</ref> Chlorfenapyr is a non-repellent, slower but virulent long-lasting residual killer.<ref>[http://onlinelibrary.wiley.com/doi/10.1002/ps.2002/abstract;jsessionid=0C9A4DABF17CB4DD010C0F263C46D8F3.d01t02 Alvaro Romero, Michael F Potter, Kenneth F Haynes, ''Evaluation of chlorfenapyr for control of the bed bug, Cimex lectularius L''], Pest Management, Science</ref>

Chlorfenapyr is part of a new class of chemicals called ''pyrroles'', which are technically pro-insecticide, meaning the biological activity depends on its activation to another chemical, in the case of bed bugs leads to lethargy and death. However, due to its hazardous nature Phantom is not legal for sale to consumers in AK, CT, NY, MA, SC, and "is intended for use by individuals/ firms licensed or registered by the state to apply termiticide and general pest control products as a spot or crack and crevice spray."<ref>http://store.parsonspestcontrol.com/msds/Phantom_Label.pdf</ref> <ref>http://www.domyownpestcontrol.com/phantom-termiticideinsecticide-p-209.html</ref> And as it may require ten or more days to kill the bugs, during which the insect may still be active and females may wander and deposit viable eggs in other locations.

Another carbamate agent which appears to be most effective against bed begs, with long residual effect, is propoxur (marketed under the registered trademark name Baygon) a pesticide with a somewhat murky regulatory history. In a test of its effectiveness against bed bugs, while some of today’s leading pesticides could not kill even half of the bugs, propoxur as well as chlorpyrifos (an organophosphate) killed them all in an hour. However, Propoxur is a neurotoxin, toxic to humans if ingested, and [[EPA]] research has found human nervous systems could be harmed, with infants and children being in the most danger. Serious overexposure can also cause death by cardiorespiratory depression.<ref>[http://www.faqs.org/periodicals/201006/2054573271.html ''Bed Bugs: The Pesticide Dilemma'']</ref> It is therefore, like chlorpyrifos,<ref>http://www.epa.gov/oppsrrd1/op/chlorpyrifos.htm</ref> banned by the EPA for use in locations where children may be present (residential buildings and hotels). Recently, the EPA denied a request by the state of Ohio to allow its use therein by licensed exterminators.<ref>http://bedbugger.com/2010/06/11/bed-bugs-cheer-ohios-propoxur-exemption-request-denied/</ref>

Propoxur volatilizes in the air and can be absorbed into the blood weeks after application. It is also thought to be a cardiovascular or blood toxicant, a possible human carcinogen, a reproductive toxicant, and a neurotoxicant, due to its cholinesterase inhibiting properties, but it is not thought to be bioaccumulative.<ref>http://toxipedia.org/display/toxipedia/Propoxur</ref>

The third and most widely used class is that of pyrethrins and pyrethroids, which come from the chrysanthemum plant. This class includes synthetic pyrethroids such as allethrin, tetramethrin, permethrin, esfenvalerate, bifenthrin, cyfluthrin, cypermethrin, deltamethrin, d-phenothrin, imiprothrin, lambda-cyhalothrin, resmethrin, and tralomethrin, and which are contained in a variety of insecticides. This class is one of the least poisonous to mammals, and break down more rapidly (thus being more of a contact killer and having less residual effect) and works to control or kill insects by paralyzing their nervous system. However, these are considered less effective than many organophosphates and carbamates, and might be repellent to bedbugs. In addition bed bugs have now developed resistance to all pyrethroids labeled to control them. <ref>"Bed Bug Increase Due to Pesticide Regulation?'', University of Illinois Extension, Illinois Pesticide Review, May, 2009</ref><ref>[http://www.bedbugbattleplan.com/content/view/42/33/ Bed Bug Insecticides]</ref> <ref>http://newyorkvsbedbugs.org/2009/04/14/worked-17-years-ago/</ref>

Currently, microencapsulated materials such as contain the pyrethroids esfenvalerate (''Onslaught'') or lambda-cyhalothrin (''Demand CS'') may offer the ''rapid'' reduction of susceptible populations.<ref>http://ento.psu.edu/extension/factsheets/bedbugs </ref>

Also reported effective against some pyrethroid-resistant bugs were two pyrethroid-based dusts, (''Tempo Dust;'' ''Drione'') as well as diatomaceous earth.<ref>http://newyorkvsbedbugs.org/2009/05/22/finally-researchers-on-the-efficacy-of-dusts/</ref>

Botanical insecticides containing natural pyrethrins are also sometimes employed, and repel and can “knock down” bed bugs for a some time, but natural pyrethrins deteriorate quickly and fail to provide the necessary residual action which some other materials supply.

Isopropyl (rubbing) alcohol also works as a contact killer, as do most insecticides while others also provide some degree of residual effectiveness. Insecticides are classified according to their application method: Crease and Crevice, Indoor Surface, Indoor Space, and Fumigation. An additional factor is whether an insecticide repels bed bugs (causing migration if not killed), or not.

A supplementary type of insecticide is that of Insect Growth Regulators (IGR’s), such as hydroprene (''Gentrol'') and methoprene, which do not actually kill bed bugs, but instead are said to work to prevent reproduction by disrupting the development of immature bed bugs, resulting in bed bugs being unable to reproduce. This process takes longer but it can ensure an eventual end of the infestation, if contact with all bed bugs is made, but usually this chemical is used in conjunction with other insecticides.<ref>http://www.bed-bug.org/insectisides-for-bed-bugs/</ref><ref>http://www.zoecon.com/pdfs/GentrolBedBug.pdf</ref>

Extensive testing determine the relative safety of insecticides (especially for mammals)is required before chemical insecticides may be registered for use, but which may result in some potentially effective and relatively safe products (perhaps such as Bendiocarb) from never being marketed. Dini M. Miller, Ph.D., an associate professor in Urban Pest Management at Virginia Tech's Department of Entomology, explains that,
<blockquote>
To get an EPA registration, the pesticide product has to be thoroughly tested for acute and chronic effects on mammals (laboratory rats and dogs), the potential effects on birds, fish, and honeybees has to be documented, and the environmental fate (half-life) of these products in water or soil also must be quantified. The cost of having a product registered is now estimated to be around $ 100 million. This cost naturally limits the number of products that make it to the marketplace. In addition, there has been a 10 to 15 year trend in reducing the number of pesticide products that receive registration for use in the indoor environment. In short, it is very hard to get new pesticides registered that are labeled for indoor use (as opposed to agricultural use). <ref>MSNBC Dateline, "Your bed bug questions answered"</ref>
</blockquote>

====Natural insecticides====
Natural insecticides include orange oil, cedar oil, freshwater food-grade [[Diatomaceous earth]]. The latter rightly applied, can slowly work to control or kill bed bugs by cutting them as they travel, often resulting in their death by dehydration. Silica aerogel (a synthetic desiccant dust) mixed with chemical insecticides has reported to be highly effective,<ref>http://www.mypmp.net/bed-bugs/bed-bugs-are-dusts-bed-bug-bullet</ref> especially when combined with a blend of bed bug alarm [[pheromones.]]<ref>[http://www.bioone.org/doi/abs/10.1603/033.046.0323 Journal of Medical Entomology, Addition of Alarm Pheromone Components Improves the Effectiveness of Desiccant Dusts Against Cimex lectularius]</ref> Lower humidity is recommended for using diatomaceous earth, and the manner of application as well as the source of diatomaceous earth can be a deciding factor in how well it works, and more research is needed to establish its effectiveness.<ref>http://newyorkvsbedbugs.org/2010/01/11/australian-de-trial</ref>

===Pesticide resistance===
Some studies have concluded that resistance to ''many'' of the chemical pesticides currently used is increasing in some bed bug populations in many areas of North America.<ref>http://newyorkvsbedbugs.org/2010/01/21/kdr-pyrethroid-resistance-widespread-in-u-s-bed-bug-populations/</ref><ref>http://www.faqs.org/periodicals/201006/2054573271.html</ref> This Resistance is genetically conferred to subsequent populations which then show resistance to other chemical tools within the same class of chemistry. Thus the problem involves all pyrethroids and is likely only to get worse.<ref>http://termidorpartners.com/store/Downloads/BASF-626-Bed-Bugs-Guide.pdf</ref> According to a report from the University of Kentucky College of Agriculture, some of the latest “super bed bugs” can survive for up to 16 days after being directly sprayed with currently used pesticides designed to kill insects immediately.

Bed bugs have a cuticle on the outside of their body that is almost impenetrable to many insecticides used today, therefore the bugs do not pick up the dried residues of such very well. Bed bugs developed resistance to DDT in the 1950s, and then to its successors such as organophosphates like diazinon and malathion which were being used to clear up remaining infestations.<ref>http://www.earthfiles.com/news.php?ID=1768&category=Environment</ref> DDT resistance can possibly lead to pyrethroid resistance, as both pesticide classes act on the same target site.<ref>http://newyorkvsbedbugs.org/2010/01/21/kdr-pyrethroid-resistance-widespread-in-u-s-bed-bug-populations/</ref> Entomologists at the University of Kentucky reported that some bed bug populations across the United States are resistant to pyrethroid insecticides, with some showing an 1,000-fold resistance to deltamethrin and lambda-cyhalothrin, compared to a susceptible laboratory strain. Researchers further found that seven of the eight field populations submitted by pest-management firms across the country were well over 100-fold resistant to deltamethrin.<ref>http://web.extension.illinois.edu/ipr/i4145_829.html#5</ref>

Before developing resistance, use of DDT dust, followed by malathion, diazinon, etc. (in addition to normal measures such as cleaning and laundering), was effective in largely eradicating bed bugs in the recent past, as a single thorough application of these older insecticides typically worked as bugs succumbed after crawling or resting contact with previously treated surfaces. As most of today's sprays lack similar residual potency (and with many also being repellent), desiccant (drying) dust formulations may play an increasing role in eliminating and preventing bed bugs in harborage areas.<ref>[http://www.mypmp.net/bed-bugs/bed-bugs-are-dusts-bed-bug-bullet ''Bed Bugs: Are Dusts the Bed Bug Bullet?''] Pest management professional, May, 2009</ref>

Repeat treatments with any insecticide are advised and are almost always necessary. Self-treatment is discouraged, and can make eradication much more difficult than when done by professional exterminators, trained in bed bug elimination. Spot treatment of bed bugs with chemical formulations can make matters worse by allowing them to disperse and or develop resistance to the insecticide used. Inhalation of all insecticides is to be avoided. Fogging is less advised, as besides the health risk to humans, they are considered to be less effective, and most contain pyrethroids, which has an associated excitatory flushing effect and by spraying into a space rather than harbourage, bugs are likely to disperse and can spread an infestation.<ref>[http://bedbugger.com/2007/05/30/bombs-dont-work-on-bed-bugs-citation-anyone/ Bombs and foggers don’t work on bed bugs and can make them worse]</ref>

===Laundering===
Certain items cannot be safely treated with insecticide, including cloths, and thus heat is prescribed. In one study, 30 minutes in the “hot” cycle of a dryer killed all life stages, while prolonged washing in 140°F water killed all life stages. Almost nothing died if soaked for two hours, and while all adults and nymphs died when soaked for 24 hours, yet all eggs survived.

===Freezing===
A study on freezing bed bugs showed that 2 hours at 1.4°F killed all bed bugs and eggs when placed directly (not in clothes) in the freezer. But when a bag of laundry was placed in the freezer, it took about 8 hours for the temperature at the center of the bag to reach 1.4°F.<ref>[http://www.ingentaconnect.com/content/esa/jee/2010/00000103/00000001/art00018 Naylor, R. A.; Boase, C. J. ''Practical Solutions for Treating Laundry Infested With Cimex lectularius (Hemiptera: Cimicidae)''] Journal of Economic Entomology, Volume 103, Number 1, February 2010 , pp. 136-139(4</ref>

The supercooling point of bed bugs is -4°F, and one study showed that all bed bugs were killed by a direct 1 hour exposure to −3°F. However, bed bugs have the capacity for rapid cold hardening, so that a 1-h exposure to 32°F improved their subsequent tolerance of −7°F and −3°F respectively, requiring either longer duration or lower temperatures. <ref>Medical and Veterinary Entomology, ''Responses of the bed bug, Cimex lectularius, to temperature extremes and dehydration: levels of tolerance, rapid cold hardening and expression of heat shock proteins'', Volume 23, Issue 4, pages 418–425, December 2009</ref>

Based upon research on other insects, it is stated that a minimum temperature of 23°F must be held for 5 days in order to kill bugs and eggs, while minus 15°F is said to instantly freeze the latter. Freezing also requires that bed bugs be actually in those temperature, versus simply the exterior of materials which house bed bugs being subjected to such.<ref>http://www.ipmctoc.umn.edu/Control_of_bedbugs_in_residences_US_Commercial.pdf</ref>

===Volumetric heating===

The most effective natural means of eliminating bed bugs involves pumping superheated air into an mildly pressurized (windows sealed) house, or heating individual room to around 140°F Temperature probes are used to ensure that internal temperatures are high enough to kill the bugs and their eggs.<ref>http://www.faqs.org/periodicals/201006/2054573271.html</ref>

One study concluded that it is important to achieve and maintain temperatures of above 118.4°F (48°C) for more than 20 min to effectively kill all life stages of bed bugs, considering the clutter in treated spaces and the fact that bed bugs move to cooler temperatures, treatment times must be much longer to penetrate cracks and crevices, At 60-min exposure to 113°F , approximately 50% of adult bed bugs exposed survived, while 20% survived after 4 hours. Complete mortality was obtained at temperatures 118.4°F, 122°F, and 131°F for all exposure times except 10- min at 118.4°F. Even if some nymphs emerged, they did not develop at temperatures higher than 118.4°F. No differences in mortality were shown between fed and unfed bed bugs.

90% higher temperatures than previously reported were required to kill bed bugs when the temperature rose slowly — possibly because of the way previous heat tests have been conducted — but it is not known what enables bedbugs to resist gradual heat stress.<ref>[http://www.propanecouncil.org/uploadedFiles/Council/Research_and_Development/REP_12221%20Efficacy%20of%20Heat%20on%20Bed%20Bugs.pdf Fundamental Research on the Efficacy of Heat on Bed Bugs and Heat Transfer in Mattresses''], TEMP-AIR, INC</ref>

===Fumigation/gases===
Use of controlled atmospheres (either single or gas mixtures) are an historical method used in the eradicating of bed bugs and other pests, typically offering superior effectiveness with less residual effects versus that of legal chemical pesticides, but which suffers from their own challenges and dangers.

====Vikane/sulfuryl fluoride====
Sulfuryl fluoride, gas, marketed under the name Vikane, is an option suited for use within contained entire structures, a procedure which takes one day and is reported to kills all bed bug adults, nymphs and eggs, if done properly. The manufacturer states that Vikane leaves no residue, rapidly dissipates, and that it does not cause significant damage to human health or environment, but it can dangerous to humans if breathed, and this use of Vikane is not legal everywhere.<ref>http://bedbugger.com/2007/04/06/vikane-gas-fumigation/</ref><ref>http://www.mypmp.net/bed-bugs/dows-vikane-effective-eliminating-bed-bugs</ref>

====Sulfur dioxide====
Sulfur, which when burned gives off sulfur dioxide gas, is the oldest known insecticide, when brimstone was used as a fumigant up to 3,000 years ago. It was used in the past against mildew and to sanitize houses quarantined due to infectious diseases such as [[smallpox]] and to kill household insects.<ref>The Environment and Encyclopedia Directory, 2001, Third Edition, p. 135</ref> Anecdotal<ref>http://thebedbugresource.com/phpBB2/viewtopic.php?t=623</ref> and clinical reports testify of the past use of fumigation with sulfur dioxide (such as through the use of sulfur candles) showing that it was highly effective against bed bugs. In the late 1930 to the mid 1940s it was used in the United Kingdom to fumigate entire homes, and it is reported to have helped reduce infestations by up to 80% in one town under study.<ref>Busvine J.R. 1964. Medical Entomology in Britain. Ann. of App. Biol. 53: 190-199</ref> One recommendation was the use of 20 fluid ounces of liquefied sulfur dioxide to 1200 cubic inches with a repeat treatment within two weeks.<ref> [http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2369743/pdf/brmedj07360-0033b.pdf British Medical Journal], p. 885, Nov. 11. 1933</ref>

However, despite its historical use and effectiveness, it apparently is no longer legal to sell for consumer use in homes, although depending on location it may be used in greenhouses and possibly by professional exterminators in some cases, as it is dangerous to use due to the poisonous and suffocating vapors of the sulfur dioxide gas, while its chemical action on metals and coloring fabrics may leave undesirable effects.<ref>[http://www.google.com/url?sa=t&source=web&cd=9&ved=0CF4QFjAI&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC2218860%2Fpdf%2Fjapha00004-0001b.pdf&ei=_7fkTMOcM4X7lwfpgvC1Cw&usg=AFQjCNG9DYw3T_grq4d_oLBTX7x-Wi0yTA&sig2=IawKCwC3s8zx6H7WlD9T3A Journal of the American Public Health Association,] p. 232, April, 1911</ref> Factors adversely affecting its effectiveness include the difficulty in penetrating all haborages, the higher resistance of eggs to the fumigant. Starvation and cold are factors which enhance the resistance of all bed bugs.<ref>http://newyorkvsbedbugs.org/2009/06/15/the-challenges-in-1941</ref> To be efficient it must burn rapidly, and some studies report it is not always successful. More clinical studies are needed in order to ascertain its effectiveness and the best manner of treatment. <ref>[http://onlinelibrary.wiley.com/doi/10.1111/j.1744-7348.1940.tb07481.x/abstract H. C. Gough, ''The toxicity of sulphur dioxide to the bed-bug Cimex Lectularius L.'']</ref>

====Carbon Dioxide====
Experiments subjecting bed bugs to atmospheres of carbon dioxide resulted in 100 % mortality of all stages within 6 hours in an atmosphere of 100% C02, while a 60% volume produced the same effect within 24 hours. An atmosphere of 98% nitrogen resulted in only 10 - 20 % mortality after 72 hours.<ref>[http://www.icup.org.uk/reports/ICUP511.pdf ''Efficacy of controlled atmospheres on cimex lectularius.'' Proceedings of the 3rd International Conference on Urban Pests]</ref>

===Natural predators===
Spiders are considered as primary natural predators of bed bugs. Several arthropod species such as cockroaches, ants, mites, etc. can attack and kill them. Rodents also can snack on the bed bugs. <ref>[http://www.metapathogen.com/bedbug/ ''Cimex lectularius, common bedbug'']</ref> An older report from 1902 describes the little red Pharaoh ant (MonoMorium Pharaonis) as being especially effective against bed bugs.<ref>[http://www.archive.org/stream/reportofstateent111896newy/reportofstateent111896newy_djvu.txt University of the State of New York ELEVENTH REPORT, Injurious and Other Insects of the State of New York], p. 112</ref>

==Environmentalism==

Environmentalists like to spread despair about bed bugs, hinting that evolution always makes them impervious to each new insecticide which people use to put down outbreaks. A typical examples is "[http://www.nytimes.com/2010/08/31/science/31bedbug.html?_r=2 They Crawl, They Bite, They Baffle Scientists]" in the August 30, 2010 ''[[New York Times]]''. The article lists half a dozen chemicals which don't kill bed bugs, while (carefully?) omitting any mention of effective chemicals.

The EPA will also soon be offering $550,000 in grants to state and tribal agencies for pilot projects relating to outreach and education. <ref>[http://bedbugger.com/2010/06/11/bed-bugs-cheer-ohios-propoxur-exemption-request-denied/ ''Bed bugs cheer: Ohio’s propoxur exemption request denied'']</ref>

Additional research suggests that pyrethroid resistant bed bugs developed faster but produced fewer eggs than the susceptible strain bed bugs. Additional evaluations also indicate that field strain bed bugs may not survive the long periods of starvation previously suggested.<ref>http://esa.confex.com/esa/2009/webprogram/Paper44657.html</ref>

==Economic Impact==

New York City's $30 billion tourism industry is threatened as travelers become skittish to travel where major infestations are occurring. <ref>[http://www.bostonherald.com/business/general/view/20101025nyc_bedbugs_scaring_off_nyc_tourists/ NYC bedbugs scaring off NYC tourists, Boston Herald, October 25, 2010]</ref>

==American Folklore==
Several variations of a children's rhyme exists whereby the bed bug is mentioned.

{{cquote|Sleep tight 
don't let the bed bugs bite, 
for if they do, take your shoe 
and smack them in two}}

Author is unknown but the first known use of 'Sleep tight' can be found in a 1866 publication by American author Susan Bradford Eppes.

==References==

{{reflist|2}}

==External links==
*[http://entsoc.org/PDF/2011/AE-Potter-spring2011.pdf Dr. Michael F. Potter, ''The History of Bed Bug Management'']
* [http://www.bedbugbattleplan.com/content/view/42/33/ Explanation of various Bed Bug Insecticides]
*[http://bedbugger.com/faqs/ How to get rid of bed bugs (Bedbugger FAQs)]
*[http://www.badbedbugs.com/bed-bug-bites/ Bed Bug Bites, with images]
*[http://www.badbedbugs.com/bed-bug-treatment Forum with extensive list of personal experiences]
[[Category:Insects]]

Talk:Mystery:Did a Fake Fidel Castro Meet the Pope?

2012-04-01T21:00:31Z

SamCoulter: /* Liberal Media */

==Body Doubles==
Castro was well known to have body doubles available in case of an emergency. Seeing as he was in such poor health a few years ago, and is now well enough to see the Pope, it is only logical to conclude that it probably isn't the same guy.
http://libertarianalliance.wordpress.com/2010/07/12/dead-castros-body-double-looking-moderately-healthy/

[[User:OllieB|OllieB]] 20:29, 28 March 2012 (EDT)

:The beard in the photos released today for the purported Fidel Castro is also slightly different from Castro's.--[[User:Aschlafly|Andy Schlafly]] 20:36, 28 March 2012 (EDT)

::So you can't think of any seriously ill person who recovered somewhat in a mere six years? Sorry, this is daft. What evidence would it take to convince some people that Castro is still alive? Is there ''anything'' that won't be dismissed as a fake?

::People can shrink several inches as they age, by the way. Castro was 6'3" when he was young; Ratzinger is 5'7" NOW. And my beard is slightly different to how it was last week because I trimmed it on Saturday, like I do every week, to look smart in church. --[[User:SamCoulter|SamCoulter]] 20:40, 28 March 2012 (EDT)

:::Actually, the Pope would have shrunk by more than Castro, I think. And do you think the shape of a nose changes from sloping slightly upward to sloping downward in just a few years?!--[[User:Aschlafly|Andy Schlafly]] 20:42, 28 March 2012 (EDT)

::::What I think is that the nose in these photos is exactly the same shape as the nose in a 2003 photo of Castro. As for the pope, as I said he is 5'7" ''now''. --[[User:SamCoulter|SamCoulter]] 20:46, 28 March 2012 (EDT)

:::Castro has a long history of using body doubles. It is unlikely that Havana would simply stop using them once he died. Or perhaps you think that the Cuban government wants Castro-lookalikes roaming the streets of Havana! Ridiculous! [[User:OllieB|OllieB]] 20:50, 28 March 2012 (EDT)

::::I don't see why not. The main reason that dictators use body doubles is to hide their movements or act as a decoy for potential assassins. Neither of these uses is much help to a dead man. The fact is that there is no evidence ''whatsoever'' that Castro is dead, but multiple photos and videos of him and records of several meetings in the last two years with individuals including the pope and the president of Brazil. Sure, they ''could'' all be body doubles, but you can say the same for anyone. Actors also use body doubles. I can claim right now that Clint Eastwood died in 1968 and every appearance by him since then has really been a body double. By your criteria, how are you going to disprove it? --[[User:SamCoulter|SamCoulter]] 20:55, 28 March 2012 (EDT)

:::::If you display a photo of a man a half-foot shorter than Clint Eastwood with a differently shaped nose, and lacking in other facial features, as the Miami Herald just published with respect to the alleged Fidel Castro, then that would disprove it. Surely you're not claiming that photo identification is impossible.--[[User:Aschlafly|Andy Schlafly]] 21:58, 28 March 2012 (EDT)

::::::I don't see this difference in nose shape you're talking about and in the photos it's clear that Castro is several inches taller than Ratzinger. I've checked several photos of Castro and his various facial markings look identical to those in the latest photos. In any case there's no evidence that Castro is dead and I don't understand your insistence that he is. --[[User:SamCoulter|SamCoulter]] 23:13, 28 March 2012 (EDT)

:::::::The man in the picture looks like Fidel Castro to me. He seems quite hunched over, which would explain why he doesn't tower over the pope.
:::::::Additionally, it must be quite hard to find a lookalike for an 80-year-old. Cuba is not a large or wealthy country, so how many 80-year-olds could they possibly have to choose from? The probability that they would have a plausible Castro lookalike capable of fooling the pope and his retinue seems low to me - perhaps less than 1%.--[[User:CPalmer|CPalmer]] 06:49, 29 March 2012 (EDT)

== Straight from ''Weekly World News'' ==

Could a communistic state pull such a stunt? Maybe. But there are many obstacles:
*How many conspirators are there? Nurses, doctors, make-up artists etc.
*You give power to a random character, something dictators don't like very much. And you allow this character to meet the pope!

Aschlafly, this claim is as sane as the claim that ''Elvis is ALIVE!!!1!1!'' - and your case isn't any more convincing! In fact, you are looking like a lunatic quoting from ''[http://weeklyworldnews.com/politics/22008/castro-flees-cuba-for-america/ Weekly World News]''. You had a hunch, and no reasonable evidence in the world will change your position! What does this say about your open-mindedness? This is almost as bad as your stance against physical reality at [[E=mc²]].

[[User:AugustO|AugustO]] 07:58, 29 March 2012 (EDT)

== Height ==

To me Castro looks significantly taller, easily the difference between 6'3" and 5'7". Look at the picture of both men seated: http://media.miamiherald.com/smedia/2012/03/28/15/16/86-OZ0Nk.St.55.jpg . The standing photos are consistent with tall older men whose posture begins to deteriorate. I can't speak to the other inconsistencies but I think we should be wary of [[confirmation bias]].[[User:KingHanksley|KingHanksley]] 12:36, 29 March 2012 (EDT)

== Yes ==

[[User:FrancisB52|FrancisB52]] 14:13, 29 March 2012 (EDT)

== No ==

I am not convinced that the real Fidel Castro is dead. With that said, to assume it is him and not question it, is to remain closed-minded and spoon-fed. Secretive groups like Communists, I think the phrase is Trust but Verify. --[[User:Jpatt|Jpatt]] 14:41, 29 March 2012 (EDT)
:Agreed. It's certainly ''possible'' that Castro is dead and it would be closed-minded to rule it out completely, but let's face it: there's no actual reason to think he is and for a dead guy he's not exactly been shy about his public appearances the last couple of years. --[[User:SamCoulter|SamCoulter]] 14:52, 29 March 2012 (EDT)
::Exactly. Personally I think Andrew Schlafly was murdered two years ago by a liberal godless homosexual and, to guarantee the survival of the encyclopedia, Conservative replaced him with a lookalike who thinks and writes exactly like he did. Prove me wrong! [[User:Baobab|Baobab]] 17:17, 29 March 2012 (EDT)

"he's not exactly been shy about his public appearances the last couple of years"??? [[Fidel Castro]] has not appeared in public since the frail man had a very serious operation in a Cuban hospital about six years ago.--[[User:Aschlafly|Andy Schlafly]] 17:41, 29 March 2012 (EDT)
:Yes he has. He met Cristina Kirchner in 2009. He spoke to the National Assembly in August 2010, and I think they might have recognised him. In September 2010 he spoke to a crowd outside the presidential palace. He publicly launched his memoirs this February. He's also made a couple of appearances on Cuban TV and met the presidents of Venezuela and Brazil. To say he hasn't appeared in public since 2006 is just wrong. Admittedly you can say that all those appearances were body doubles, but then you're just making an unfalsifiable argument: no evidence will change your mind. --[[User:SamCoulter|SamCoulter]] 18:01, 29 March 2012 (EDT)

::I have an open mind about this. Do you have a link for your best claim above? I don't think the alleged meetings with the presidents of Venezuela and Brazil were public appearances.--[[User:Aschlafly|Andy Schlafly]] 20:10, 29 March 2012 (EDT)

:::Here is an article from the conservative ''Daily Telegraph'' about Castro launching his memoirs, with [http://www.telegraph.co.uk/news/worldnews/fidel-castro/9062507/Fidel-Castro-makes-rare-public-appearance-at-Havana-book-launch.html video]. --[[User:SamCoulter|SamCoulter]] 20:16, 29 March 2012 (EDT)

::::And [http://www.juventudrebelde.co.cu/cuba/2009-01-21/fidel-castro-met-cristina-fernandez-de-kirchner here] is a photo of Castro with Kirchner in 2009. --[[User:SamCoulter|SamCoulter]] 20:21, 29 March 2012 (EDT)

:::::[http://www.perfil.com/fotogaleria/?filename=contenidos/2011/06/22/noticia_0007.html&fotoNro=1 Here] is Castro visiting Hugo Chavez in hospital last June. --[[User:SamCoulter|SamCoulter]] 20:30, 29 March 2012 (EDT)
:Fidel Castro is alive. While it is true that Soviet communist governments lied about the health of their leaders [http://www.nytimes.com/1996/09/27/world/for-many-russians-daily-struggle-eclipses-yeltsin-issue.html?pagewanted=all&src=pm], to stubbornly stick to the notion that Fidel Castro is dead or probably dead is pointless at this time. I don't think the proclamation that he is dead or probably dead should have been made in the first place. [[User:Conservative|Conservative]] 20:45, 29 March 2012 (EDT)

::::::"Conservative" ''Daily Telegraph''? Perhaps you're joking now. Regardless, the link I checked from your postings was not a public appearance.--[[User:Aschlafly|Andy Schlafly]] 20:41, 29 March 2012 (EDT)

:::::::Well it's right-wing, pro-USA, pro-Israel, pro-Christianity and anti-homosexual marriage, so I'm not sure what else I would call it. Anyway, the video showed Castro speaking to a large room full of people, which certainly seems public to me. The same article has a link to another talk by Castro the same day, about the Falkland Islands. --[[User:SamCoulter|SamCoulter]] 20:53, 29 March 2012 (EDT)
:::::::::Fidel called me today and bitterly complained about the Conservapedia atheism article which currently ranks #5 for atheism at Google Cuba. :) [http://www.google.com.cu/#sclient=psy-ab&hl=es-419&biw=1024&bih=560&q=atheism&oq=atheism&aq=f&aqi=g4&aql=&gs_l=hp.3..0l4.2756l3479l0l4197l7l6l0l0l0l0l126l539l1j4l5l0.frgbld.&pbx=1&bav=on.2,or.r_gc.r_pw.,cf.osb&fp=a9b6f6d949da842d] I told him, "Hasta la vista" and then hung up on him. :) [[User:Conservative|Conservative]] 20:54, 29 March 2012 (EDT)

::::::::::Several of the [[communist]]s in the "public" meeting Sam refers to above were probably Fidel's golfing buddies, and perhaps they all scored holes-in-one too in a round of golf with Fidel recently!!--[[User:Aschlafly|Andy Schlafly]] 22:31, 29 March 2012 (EDT)

== Do you love being told your wrong? ==

King Solomon wrote: "Do not reprove a scoffer, or he will hate you; reprove a wise man, and he will love you." - Proverbs 9:8

Pastor C. J. Maheney wrote: "Since God often uses the criticism of others to reveal the idols of our hearts and to accelerate our growth in humility, pastors should be eager to receive criticism. I should be eager to receive correction, but usually I’m not. And it’s no mystery why I’m not eager to receive criticism—I’m a proud man."[http://www.sovereigngraceministries.org/blogs/cj-mahaney/category/wisdom-2b-foolishness.aspx]

Andy, if memory serves and I believe it does, in the early days of this wiki you said that you hate being shown your wrong or something very similar to that. Do you love being shown your wrong?

Here is an excellent sermon give at the I'll Be Honest YouTube Christian YouTube channel: [http://www.youtube.com/watch?v=UBsVH_TBxHg Accepting correction]

[[User:Conservative|Conservative]] 18:56, 29 March 2012 (EDT)

:(your wrong > you're wrong) [[User:Baobab|Baobab]] 09:20, 30 March 2012 (EDT)

==His Castroness is alive==
In my opinion I believe Castro to be alive, for several reasons. First, he's wilyer that a coyote with a subscription to Acme; he knows how to stay alive. Second, he sends out for his doctors, so why should he risk the Cuban health care system when there's a better way to do it just a phone call away to an overseas location?

Third, and most important, they didn't parade his corpse about the country yet. Liberal, leftist commie societies, having lost any respect for God and the Ten Commandments, have a habit of fawning over their dear leaders so much that it breaks the first two commandments on the list. Think of how they reacted to Che's burial; lot's of tears (or was it drool?) involved. Think of Lenin (mummified and displayed); Stalin (ditto); Ho Chi whatever, Chairman Mao, the pair of Kim's (served under glass); and any one of the post-Stalin Russian pinkos who just had to be reported dead before the stench of decomposition informed the public before Pravda could.

Yes, His Fidelness is very much alive, because if he were dead every liberal in LaLa Land and beyond would weep and wail before that cigar-chomping commie would be reduced to room temperature. [[User:Karajou|Karajou]] 11:32, 30 March 2012 (EDT)

:But in Cuba Fidel's politically weaker brother Raul wanted to take and hold power. In addition, Republicans were in the White House at the time (2006) and Cuban exiles in Florida would have called for open elections if Fidel's passing had been announced. Raul had an enormous incentive not to announce that Fidel had passed away.--[[User:Aschlafly|Andy Schlafly]] 11:52, 30 March 2012 (EDT)
::Republicans and Cuban exiles have been rightly calling for open elections in Cuba for a long time. However I don't think Cuba cares very much. The fact is there is no reason to think Castro is dead. --[[User:SamCoulter|SamCoulter]] 14:40, 30 March 2012 (EDT)

== Liberal Media ==

Presumably the liberal American media couldn't have known in advance that Cuba would have used a fake Castro, right? They weren't clamoring for the Pope to meet the fake Castro, they were clamoring for the Pope to meet the real Castro. The Cuba media (communist media) wasn't clamoring for it in the first place. So I'm not sure what the point of invoking that is. [[User:Gregkochuconn|Gregkochuconn]] 09:28, 1 April 2012 (EDT)

:Smart folks in the liberal American media know that Cuba is probably using a fake Fidel Castro. If nothing else, leftists know how much other leftists rely on [[deceit]]. A careful review of liberal media articles about Fidel Castro shows that they are cautious in how they report about him, lest the truth leak out and embarrass them. Hence there are no calls by the liberal media for Obama to meet Fidel Castro.--[[User:Aschlafly|Andy Schlafly]] 11:14, 1 April 2012 (EDT)
::That is because the US does not engage in diplomatic relations with Cuba, and has not for more than 50 years. This is basic US history. [[User:MikeGardner|MikeGardner]] 15:41, 1 April 2012 (EDT)

:::[[Bill Clinton]], while president, met with [[Fidel Castro]]. [http://abcnews.go.com/International/story?id=82686&page=1] Why isn't the [[liberal media]] asking [[Barack Obama]] to do likewise???--[[User:Aschlafly|Andy Schlafly]] 15:45, 1 April 2012 (EDT)
::::Well, according to that article, Clinton's meeting was brief, unplanned and nonsubstantive and yet still led to criticism from anti-Castro groups and forced the White House to state officially that no change in policy was intended. Given the backlash following such an innocuous event, I, for one, am not at all surprised that no one is asking for Obama to meet with Cuban leaders. [[User:JustinD|JustinD]] 16:54, 1 April 2012 (EDT)
:::::There's also the fact that while Clinton was President, Castro was the leader of Cuba. Now he isn't. If a US President meets any Castro it should be Raul. Leaders who visit the UK don't meet Margaret Thatcher or John Major; they meet David Cameron. --[[User:SamCoulter|SamCoulter]] 17:00, 1 April 2012 (EDT)

Talk:E=mc²

2012-04-01T20:23:16Z

SamCoulter: /* Examples of how meaningless E=mc² is: descriptions for the layman */

Petition

2012-03-31T20:24:05Z

SamCoulter:

A '''petition''' is a document, written most often by an interest group, with a list of demands or statements written on it. Underneath the statement is space for [[signature]]s gathered from anyone who agrees with the statement. It is then sent to the person or [[organization]] which it is attempting to pressure, with the intent to show mass [[public]] opinion on the subject.

==Modern Developments==

Online petitions are becoming increasingly popular. The British government has an e-petition site, and any petition attracting more than a certain number of signatures is guaranteed a discussion (though not a vote) in the [[House of Commons]].<ref>http://epetitions.direct.gov.uk/ UK Government e-petition site</ref> However petitions distributed by chain email are worthless, as multiple copies quickly appear and it is impossible to get an actual count of the names.

==References==

<references/>

[[Category:Political Terms]]

Talk:E=mc²

2012-03-31T16:07:29Z

SamCoulter: /* Protection of the Article */ Fixing typo.

Talk:First Coalition

2012-03-31T04:57:43Z

SamCoulter: /* Suggested Move */ new section

If I were to guess, this probably has something to do with the French Revolution, but I'm not sure because there is very little context to it. --[[User:Colest|Colest]] 16:56, 29 May 2007 (EDT)

== Suggested Move ==

I think we should move this to '''War of the First Coalition'''. The Coalition formed after the war began but only existed in the context of that war, which is generally known as the War of the FIrst Coalition. --[[User:SamCoulter|SamCoulter]] 00:57, 31 March 2012 (EDT)

First Coalition

2012-03-31T04:56:11Z

SamCoulter:

The '''First Coalition''' was formed by many countries including [[Great Britain]], [[Spain]], [[The Netherlands]], [[Prussia]], and [[Austria]] to prevent the violence in Revolutionary France from spreading outside it. The origin of the Coalition was France's declaration of war on Austria on 20 April 1792; the other nations joined in to assist Austria and prevent the spread of Revolutionary ideas.

[[Category:History]]

National Security Advisor

2012-03-31T04:53:27Z

SamCoulter:

'''National Security Advisor''' is the position of chief adviser to the US President on national security issues. It is a position within the [[National Security Council]]

[[Category:United States]]

Talk:E=mc²

2012-03-31T04:52:09Z