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Physics, Astronomy & Cosmology / Re: Quantum Entanglement and Interstellar Communication.
« on: 29/08/2023 16:01:26 »Don't think so, Alan, but I am not good enough( not good at all!No, you very much are good enough, and you are correct here.
Now force your particle into an up state: you therefore know mine is down, and I can measure it.This is very much wrong. Entanglement does not mean that 'what is done to one particle affects the other'. Yes, a message could be sent if that were true, but it isn't. Spooky action at a distance (as it is called) has never been demonstrated. If it was, all the local interpretations that forbid it would have been falsified.
Spin entanglement says (in short) that if you measure both things in the same way, the results will be correlated. If you force one of the particle spins, that is the same as declining to take one of the two measurements, leaving nothing to compare.