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Talk:Theory of relativity (view source)
Revision as of 16:07, April 11, 2012
, 16:07, April 11, 2012→GPS and Relativity: the situation
::Aschlafly, please correct me if I am misunderstanding you, but it seems to me that you believe very firmly that relativity has nothing to do with GPS, even though you are unwilling to present any evidence to support this belief, and wish to put severe restrictions on what 'proof' of the relationship other folks may present. I raised some five questions above as to what sort of evidence you might consider. Could you please answer these questions.
::Aschlafly, please correct me if I am misunderstanding you, but it seems to me that you believe very firmly that relativity has nothing to do with GPS, even though you are unwilling to present any evidence to support this belief, and wish to put severe restrictions on what 'proof' of the relationship other folks may present. I raised some five questions above as to what sort of evidence you might consider. Could you please answer these questions.
::I'd like to ask Mr. Schafly if he could explain what the clock adjustments on GPS satellites are for, the article is not clear, and neither is anything on this talk page.--[[User:Cahnkj|Cahnkj]] 00:44, 11 April 2012 (EDT)
::I'd like to ask Mr. Schafly if he could explain what the clock adjustments on GPS satellites are for, the article is not clear, and neither is anything on this talk page.--[[User:Cahnkj|Cahnkj]] 00:44, 11 April 2012 (EDT)
:::Cahnkj, herewith a summary of the clock-adjustment situation as I (RolandPlankton) see it. Newton's equations of motions say nothing about how clocks keep time. Einstein's equations of relativity imply that identical clocks will vary in their timekeeping (tick at different rates) if they are travelling at different speeds, or if they are at different heights in a gravitational field, or if they are subject to different accelerations; see [http://tycho.usno.navy.mil/ptti/1996/Vol%2028_16.pdf GPS and Relativity: An Engineering Overview]. Now the satellites used in the GPS system require very accurate clocks which are in step with ground-based clocks. The paper just quoted provides the various relativistic equations which apply - the satellites are travelling faster than a ground-based receiver, and are at a different height in a gravitational field. Prior to launch the clocks in the GPS satellites are deliberately set to a different tick rate from ground-based clocks, so that when they are in orbit the clocks will appear to tick at the same rate; the difference in tick rates is about 38 nanoseconds per day, and this adjustment can be calculated from the relevant relativistic equations.
:::But the problem is that Aschlafly rejects the Theory of Relativity, and hence rejects any calculation based on that. The only serious argument he has put forth on this current talk page (see preceding section) is an appeal to [http://en.wikipedia.org/wiki/Wikipedia:The_Truth the truth]; the quote he provides above is also demolished above. You may wish to consult [[Counterexamples to Relativity]], which is rebutted point by point in [[Essay:Rebuttal to Counterexamples to Relativity]].
:::Hope this doesn't add too much to the confusion. [[User:RolandPlankton|RolandPlankton]] 12:07, 11 April 2012 (EDT)
::Aschlafly, as a separate issue, in view of of your apparent attitude to references, could I ask you to have a look at the articles I have been working on over the last two months: [[Pi]], [[Programming language]], [[Compiler]], and the work-in-progress [[Chomsky hierarchy]]. Obviously I'm only asking you to consider the changes I have made. In particular, can you check if the references are acceptable to you, and can you also check that the general style and level of writing is in accordance with Conservapedia's aims? The next article I intend to turn my intention to is [[Context-Free Grammar]], since it seems to me that this fails to satisfy [[Conservapedia:Guidelines#Style]] "Articles on complex topics need an introduction which assumes little or no previous knowledge". [[User:RolandPlankton|RolandPlankton]] 11:03, 9 April 2012 (EDT)
::Aschlafly, as a separate issue, in view of of your apparent attitude to references, could I ask you to have a look at the articles I have been working on over the last two months: [[Pi]], [[Programming language]], [[Compiler]], and the work-in-progress [[Chomsky hierarchy]]. Obviously I'm only asking you to consider the changes I have made. In particular, can you check if the references are acceptable to you, and can you also check that the general style and level of writing is in accordance with Conservapedia's aims? The next article I intend to turn my intention to is [[Context-Free Grammar]], since it seems to me that this fails to satisfy [[Conservapedia:Guidelines#Style]] "Articles on complex topics need an introduction which assumes little or no previous knowledge". [[User:RolandPlankton|RolandPlankton]] 11:03, 9 April 2012 (EDT)
:::Roland, your good edits are appreciated and I've seen no complaints about them. I agree that the [[Context-Free Grammar]] would benefit from a better introduction and look forward to reading what you add there.--[[User:Aschlafly|Andy Schlafly]] 17:39, 9 April 2012 (EDT)
:::Roland, your good edits are appreciated and I've seen no complaints about them. I agree that the [[Context-Free Grammar]] would benefit from a better introduction and look forward to reading what you add there.--[[User:Aschlafly|Andy Schlafly]] 17:39, 9 April 2012 (EDT)