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PQUEUED Monday! (Sift Talk Post)

kulpims (Member Profile)

Quantum Physics Double Slit Experiment - amazing results

lucky760 says...

This stuff is really incredible. Read this text quoted from http://www.thekeyboard.org.uk/Quantum%20mechanics.htm
Pay special attention to the second paragraph regarding the existence of our universe... Whoa. These implications are mind-shattering...

The 'collapse of the wave function' theory in the Copenhagen Interpretation states that "when we are not looking at the particle, the probability wave, of even a single particle, is spread out and will pass through both slits at the same time and arrive at the detector as a wave showing an interference pattern. When we observe the electron by placing detectors at the slits, it is forced into revealing its location which causes the probability wave to collapse into a particle. If the theory is correct, its implications are staggering. What it suggests is that nothing is real until it has been observed!

Nothing is real until it has been observed! This clearly needs thinking about. Are we really saying that in the 'real' world - outside of the laboratory - that until a thing has been observed it doesn't exist? This is precisely what the Copenhagen Interpretation is telling us about reality. This has caused some very well respected cosmologists (Stephen Hawking for one) to worry that this implies that there must actually be something 'outside' the universe to look at the universe as a whole and collapse its overall wave function. John Wheeler puts forward an argument that it is only the presence of conscious observers, in the form of ourselves, that has collapsed the wave function and made the universe exist. If we take this to be true, then the universe only exists because we are looking at it."

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