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Physics
Quantum Physics
Measurement of Entangled Particles causes up or down spin?
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[QUOTE="PeroK, post: 6380591, member: 493650"] What you are asking is whether the two particles have internal (so-called "hidden") variables that are preset with the outcomes of all spin measurements that may be made on them? This was the hypothesis of the [I]EPR paper[/I]. Actually, QM and its probabilities based on amplitudes predicts different results from any local hidden-variables theory. This was first identified by John Bell (see [I]Bell's Theorem[/I]) and has subsequently been tested. The results of these experiments show that the particles cannot have preset local hidden-variables. Note that QM does not propose any information transfer between the particles. All QM says is that the results of experiments are consistent with the original entangled state, hence measurements of spin on the particles are correlated. [/QUOTE]
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Physics
Quantum Physics
Measurement of Entangled Particles causes up or down spin?
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