This video claims that the act of observing particles in the double-slit experiment makes the particles create a particular pattern on the back wall that they won't otherwise create.
http://video.google.com/videoplay?docid=-4237751840526284618
I read that it's not the act of observing that effects the particle, it's just that we can only observe particles that are hit by photons. But that doesn't explain why, if we don't MAKE photons collide with any of the particles, the back wall pattern is still effected by our observing (I mean, if we observe only particles that are hit by photons naturally).
What happens if we, in the future, become able to observe double-slit experiments made years ago on another planet? Imagine they took place some years ago, and the light has traveled to us during that time. Will those particles behave as though they were observed, although they cannot possibly "know" that we will observe them years later? What would happen?
2007-01-20
10:43:35
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1 answers
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asked by
Justin Case
1
in
Physics