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#Mon Aug 09 11:51:18 CEST 2010
Text__pn9ncKObEd-WfYQ0GneCwQ_title=The Core of the Einstein-Podolsky-Rosen Experiment
Text__pn9ncKObEd-WfYQ0GneCwQ_text=Einstein explains the core idea behind the Einstein-Podolsky-Rosen essay, which he feels was not explained clearly enough in the paper. As an example of a quantum-mechanical state, Einstein considers two closed boxes. There is a ball in one box, but nobody knows, in which. Is it a physical fact that the ball either is or is not in the first box even if one hasn\u2019t opened any box \u2013 as Einstein claims \u2013 or is it only a fact after a box is opened \u2013 which is Bohr\u2019s position? Einstein argues that Bohr\u2019s position requires that the physical state in one of the boxes changes when the other one is opened. And that contradicts the fundamental intuitions of physics.