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→The Uncertainty principle doesn't invalidate Perpetual motion...
::::::::"no, such a machine cannot exist." Why? And in response to the prior comment above, I'm not asking what is "usually the answer" by others (i.e., [[hearsay]]). I'm asking for your opinion and explanation.--[[User:Aschlafly|Andy Schlafly]] 23:49, 12 April 2012 (EDT)
::::::::"no, such a machine cannot exist." Why? And in response to the prior comment above, I'm not asking what is "usually the answer" by others (i.e., [[hearsay]]). I'm asking for your opinion and explanation.--[[User:Aschlafly|Andy Schlafly]] 23:49, 12 April 2012 (EDT)
:::::::::Can I please point out that the 2nd Law, at present, does NOT have any consistent and/or accepted deep physical mechanism behind it involving quantum mechanics or whatever. It can be justified by the argument that systems will naturally move towards larger homogenous volumes in phase space, but the question of WHY we think the 2nd law is valid is still entirely open. The Uncertainty Principle as normally presented (i.e. the product of uncertainties between certain pairs of eigenvalues of observables - specifically, those that don't commute with each other) in no way has any time-asymmetry in it. The 2nd law DOES have time-asymmetry. There's no argument that you, I, or any of the most learned physicists in the world can currently make which directly attributes "entropy" to "quantum uncertainty". If you have one, with the mathematics to back it up, please submit it to Nature, and prepare for a trip to Stockholm... [[User:DanPW | Dan W]]
::::::::::I appreciate the flattering suggestion, but the [[Nobel Prize]] is never given to a [[conservative]] and/or anyone who has publicly criticized the [[Theory of Relativity]] or the [[Theory of Evolution]]. See, e.g., [[Robert Dicke]], [[Fred Hoyle]], [[Ronald Reagan]], etc.
::::::::::I agree that narrow interpretations of the Second Law are, well, limited in what they conclude. But a full view of the meaning of the Second Law does recognize that quantum uncertainty underlies it. Quantum uncertainty does have a time-asymmetry to it ... just as attempts at a perpetual motion machine do.--[[User:Aschlafly|Andy Schlafly]] 22:33, 5 May 2012 (EDT)
::::::::::Interesting; as I said before, if you indeed can demonstrate this, and were subsequently denied a Nobel prize for it, I may accept your opinion that the committee is biased against those with a conservative viewpoint. Please point me to a derivation / demonstration of the uncertainty principle (other than those I have come across in my career, which are based on the Fourier transform of a wavepacket, for example, and which are not inherently time asymmetric) to back up your claim. Alternatively, please point me towards evidence that all current holders of the Nobel prize are liberals. [[User:DanPW]]
:::::::::::High correlation, in the absence of another plausible explanation, suggests high likelihood of causation. Undeserving liberals, such as [[Obama]], have won the [[Nobel Prize]], while over-deserving [[conservatives]], such as [[Ronald Reagan]], have not. Also, over-deserving scientists who criticized the liberal-promoted [[Theory of Evolution]] or the [[Theory of Relativity]], such as [[Fred Hoyle]] and [[Robert Dicke]], were passed over for the prize.
:::::::::::As to the time asymmetry of [[quantum mechanics]], the uncertainty yields greater uncertainty over time, as in quantum tunneling.--[[User:Aschlafly|Andy Schlafly]] 17:47, 6 May 2012 (EDT)
::::::::::::As to your "argument" about quantum tunnelling, I see that since you clearly have absolutely no understanding of what these concepts actually mean, there's little point in arguing this anymore. For the record, though, quantum tunneling arises due to the non-zero amplitude of a wavefunction in a classically forbidden region of a potential. The uncertainty principle is not what "causes" tunneling, rather both tunneling and the uncertainty principle are consequences of the wave nature of the statefunction. As to the Nobel prize, 1) whether or not you agree with Obama winning it (I certainly do not think he should have!), the Nobel Peace prize should be separated from the scientific prizes since it's clearly actually something to do with politics, wheras the other prizes are not, save perhaps for economics. Also, the fact that the committee has sometimes missed out on giving deserved awards (e.g. Franklin, Burnell, Hoyle, not so convinced about Dicke but I do recognise he was a great scientist, particularly in the area of electronics), does not give you any evidence of a liberal bias. As far as I can see, no mention has ever been made to the politics of any of these people. Fred Hoyle might well have been a liberal, or a conservative, we have no idea. [[User: DanPW]]