O/T: Quantum entanglement
David Shaw
(13 May 2020 19:57 UTC)
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Re: [TML] O/T: Quantum entanglement
James Davies
(13 May 2020 20:33 UTC)
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Re: [TML] O/T: Quantum entanglement
David Shaw
(13 May 2020 20:37 UTC)
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Re: [TML] O/T: Quantum entanglement
Thad Coons
(13 May 2020 20:57 UTC)
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Re: [TML] O/T: Quantum entanglement
Thomas Jones-Low
(13 May 2020 22:41 UTC)
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Re: [TML] O/T: Quantum entanglement
kaladorn@xxxxxx
(13 May 2020 23:25 UTC)
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Re: [TML] O/T: Quantum entanglement
Timothy Collinson
(14 May 2020 07:17 UTC)
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Re: [TML] O/T: Quantum entanglement
shadow@xxxxxx
(18 May 2020 19:02 UTC)
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Re: [TML] O/T: Quantum entanglement
kaladorn@xxxxxx
(18 May 2020 21:58 UTC)
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Re: [TML] O/T: Quantum entanglement
Richard Aiken
(19 May 2020 17:34 UTC)
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Re: [TML] O/T: Quantum entanglement shadow@xxxxxx (24 May 2020 16:39 UTC)
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Re: [TML] O/T: Quantum entanglement shadow@xxxxxx 24 May 2020 16:39 UTC
On 19 May 2020 at 13:33, Richard Aiken wrote: > What happens when different observers look at each entangled > particle? That is, one observer looking at the one Here and another > observer looking at the one Over There? That's exactly how they proved non-locality. The entangled particles are created and sent in different directions. At the "end" of each run there's a detector that measures a property of the particle. Usually it's photons and they are measuring polarization. Say "up-down" vs "right-left". As part of proving the non-locality, the setup doesn't "decide" which way the detectors are set until *after* the photons are emitted. If both detectors are set the same, you get either a detection at both (if they are aligned with the polarization) or a failure at both. If they are set differently, the one that's aligned properly gets a detection and the other one doesn't. If the hidden variables model was correct, you'd get a certain statistical pattern in the measures. If the state isn't determined until you measure it, you get a different set of statistics. You'll have to google things for details. anyway, the results of many, *many* tests by various labs all show that the state isn't determined until it's measured. So as one physicist said long ago in reply to Einstein's assertation that "God does not play dice with th universe", "Not only does God play dice, He sometimes throws them where they cannot be seen". -- Leonard Erickson (aka shadow) shadow at shadowgard dot com