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Going for a blast into the real past 11333

->http://seattlepi.nwsource.com/local/292378_timeguy15.html (score:256 / approval:80%)
* by mrwzrd Thu Nov 16th, 2006 3:03pm (from #bor)
Going for a blast into the real past
If his experiment with splitting photons actually works, says University of Washington physicist John Cramer, the next step will be to test for quantum "retrocausality." That's science talk for saying he hopes to find evidence of a photon going backward in time. More →

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mrwzrd said on Thu Nov 16th, 2006 3:09pm [#7604]
Because these two photons are entangled, the act of detecting the second as either a wave or a particle should simultaneously force the other photon to also change into either a wave or a particle. But that would have to happen to the first photon before it hits its detector -- which it will hit 50 microseconds before the second photon is detected.

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