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View Full Version : weird quantum experiments mario 03-21-04, 12:40 AM I wonder if anybody else has heard of this. I have read about an experiment where "twin" particles had the same rotational spin. When scientists changed the spin of one of these particles to the opposite direction the other particle automatically changed it's spin on it's own. Somehow it "knew" that the spin of it's twin was changed and did the same. Has anybody heard of this phenomenom? Does it hint that ESP and quantum physics may be linked? Thoughts please. lethe 03-21-04, 01:35 AM I wonder if anybody else has heard of this. I have read about an experiment where "twin" particles had the same rotational spin. When scientists changed the spin of one of these particles to the opposite direction the other particle automatically changed it's spin on it's own. Somehow it "knew" that the spin of it's twin was changed and did the same. Has anybody heard of this phenomenom? Does it hint that ESP and quantum physics may be linked? Thoughts please. yeah, this phenomenon is called the Einstein Podolsky, Rosen (EPR) Paradox. James R 03-21-04, 02:18 AM The general phenomenon is a quantum effect known as "entanglement" between 2 particles. It has nothing to do with ESP. PhysMachine 03-21-04, 05:31 PM I'm curious as to how that information travels instantaneously. lethe 03-21-04, 05:39 PM I'm curious as to how that information travels instantaneously. the answer to this depends first of all on what exactly you mean by "how?". this is the apparent nonlocality of quantum mechanics. the answer also depends on what camp you live in. in Bohmian mechanics, the nonlocality is explicitly built in. the simplest answer is that the wavefunction collapse cannot actually carry information, so quantum nonlocality does not violate relativity. John Connellan 03-22-04, 05:19 AM I'm curious as to how that information travels instantaneously. take a look at the following link: http://math.ucr.edu/home/baez/physics/Quantum/bells_inequality.html blackholesun 03-22-04, 02:52 PM I'm curious as to how that information travels instantaneously. It doesn't. No useful info is transmitted through entanglement. John Connellan 03-23-04, 05:25 AM Well no information that WE can extract but there is still a connection somewhere which allows the instantaneous state to develop. |