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 Uncertainty, Schrodinger's cat & Electron Behavior

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jimliew
post Aug 23 2010, 04:50 PM

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I dont think Heisenberg Principle and Schroedinger cat are related.
jimliew
post Aug 24 2010, 11:53 AM

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Here is my layman explanation of Uncertainty Principle.

Imagine a billiard ball rolling across the width of a billiard table. Now we shoot a few other balls from the bottom cushion.

top cushion
--------------------------------------------------------
<------ direction of target ball
--------------------------------------------------------

^ ^ ^ ^ ^

shoot balls to hit target ball

The balls that do not hit the target end up at the top cushion. There will be a single ball that hits the target and also end up somewhere at the top cushion. By measuring the position of the shooting balls and the time it takes to reach the top cushion, we can calculate the position and momentum of the target ball.

The only way to measure position and momemtum is to hit the ball with something and observe the effect, and this very act affects both.

Hope this is a valid way of explaining. Do correct me if otherwise. Please note that there is something called "quantum memory" which has been proposed to overcome the Uncertainty Principle.
jimliew
post Aug 27 2010, 01:07 PM

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QUOTE(mrsmile @ Aug 26 2010, 07:51 PM)
I believe this though experiment is only an analogy to explain wave function.
it might have some loophole
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You are quite right. I 'm just trying to explain it in a simple to understand way
jimliew
post Sep 8 2010, 04:00 PM

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QUOTE(nice.rider @ Sep 8 2010, 12:00 AM)
Good explanation. Agreed that it was a thought experiment.

Eugene Wigner, who proposed that the consciousness of the observer is what causes collapse of the wavefunction. Colloquially known as "consciousness causes collapse", this interpretation of quantum mechanics states that observation by a conscious observer is what makes the wave function collapse.

The interpretation identifies the non linear probability projection transformation which occurs during measurement with the selection of a definite state by a mind from the different possibilities which it could have in a quantum superposition.
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If "consciousness causes collapse" then we need to understand more about consciousness to understand the universe around us. So what was the universe and how did it behave before the first consious mind appeared?

 

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