In quantum mechanics, the EPR paradox is a thought experiment which challenged long-held ideas about the relation between the observed values of physical quantities and the values that can be accounted for by a physical theory. "EPR" stands for Einstein, Podolsky, and Rosen, who introduced the thought experiment in a 1935 paper to argue that quantum mechanics is not a complete physical theory. It is sometimes referred to as the EPRB paradox for David Bohm, who converted the original thought experiment into something closer to being experimentally testable.
The EPR experiment yields a dichotomy. Either
1. The result of a measurement performed on one part A of a quantum system has a non-local effect on the physical reality of another distant part B, in the sense that quantum mechanics can predict outcomes of some measurements carried out at B or
2. Quantum mechanics is incomplete in the sense that some element of physical reality corresponding to B cannot be accounted for by quantum mechanics (that is, some extra variable is needed to account for it.)
Although originally devised as a thought experiment that would demonstrate the incompleteness of quantum mechanics, actual experimental results refute the principle of locality, invalidating the EPR trio's original purpose. The "spooky action at a distance" that so disturbed the authors of EPR consistently occurs in numerous and widely replicated experiments. Einstein never really accepted quantum mechanics as a "real" and complete theory, struggling to the end of his life for an interpretation that could comply with his Relativity without implying "God playing dice", as he condensed his dissatisfaction with QM's intrinsic randomness and (still to be resolved) counter-intuitivity.
The EPR paradox is a paradox in the following sense: if one takes quantum mechanics and adds some seemingly reasonable conditions (referred to as locality, realism, counter factual definiteness, and completeness), then one obtains a contradiction. However, quantum mechanics by itself does not appear to be internally inconsistent, nor — as it turns out — does it contradict relativity. As a result of further theoretical and experimental developments since the original EPR paper, most physicists today regard the EPR paradox as an illustration of how quantum mechanics violates classical intuitions, and not as an indication that quantum mechanics is fundamentally flawed.
2006-12-03 00:12:46
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answer #1
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answered by mhp_wizo_93_418 7
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My next word was "What?"
I see the intent of the paradox but surely there isn't really a paradox unless you are forced to answer the question immediately. Since mine was a "What?" I can then truthfully say the answer was no.
Or you could answer truthfully by writing the answer down "Yes" and then saying "No" or vica-versa.
2006-12-03 07:42:08
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answer #2
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answered by Anonymous
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Yes, I like thumbs up.
2006-12-03 07:21:36
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answer #3
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answered by Yellowstonedogs 7
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Thumbs up/no
2006-12-03 07:29:04
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answer #4
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answered by Anonymous
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For me thumb is just like any other part of body.......just a finger. up or down does not make any difference to me. I am happy as long as all parts of my body is safe. Can't imagine a broken thumb..... . It is just fake beliefs of modern thinking that thumbs up is symbol of victory while thumbs down is your defeat or something insulting.......what nonsense..........!!!!!!!!!
2006-12-03 08:08:08
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answer #5
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answered by Anonymous
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Yes to the first question. No to the second question. Up to the third question.
2006-12-03 12:10:57
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answer #6
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answered by HeyNowBrownCow 2
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no, the next word im going to say is "cotton headed ninny muggins"good try tho depends, whres the middle finger pointing?
2006-12-03 07:24:19
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answer #7
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answered by Licemen 2
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Correct, it was no and i like a thumbs up.
2006-12-03 07:27:33
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answer #8
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answered by parrothead2371 6
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Sure,.. Einstein-- I'd have to agree.
2006-12-03 07:56:07
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answer #9
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answered by ••Mott•• 6
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Depends...
2006-12-03 07:43:56
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answer #10
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answered by Anonymous
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