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Old 01-16-2020, 06:22 PM
Location: UK
3 posts, read 204 times
Reputation: 10


Will some knowledgeable scientist please enlighten me (in simple terms) … by coincidence I watched a TV prog in the UK dealing with a recent experiment to prove particle entanglement and that it clashes with Einstein's theories. This was followed by one where Brian Cox explained entropy and that everything degrades with time. Now, my limited knowledge (and even greater limited intellect) led me to the following puzzle … If 2 entangled particles are filtered (observed, measured) at different times will the second one not have changed its structure or physical qualities due to entropy thus losing whatever 'entanglement' it had? And surely it is impossible to achieve simultaneity with the observations.
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Old 01-17-2020, 12:24 PM
1,061 posts, read 196,468 times
Reputation: 1315
I would suggest you email one of a university professors specialising in QM and pose that question to them.

Alternatively, you can try and post on https://www.physicsforums.com/ where there are a number of academics and professionals far more qualified to speak on the subject than anyone here.
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Old Today, 12:55 PM
Location: Seattle
3,270 posts, read 711,715 times
Reputation: 2878
The issue there is that simultaneity is a relative concept in physics. The two locations can only communicate with each other at the speed of light, so what is seen by one observer will differ from what is seen by another. Meanwhile, the collapse of the quantum wave function does happen simultaneously, without regard for the speed of light. Spooky action at a distance, as Einstein called it.

Last edited by rjshae; Today at 01:08 PM..
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