[ExI] CQT Researcher Uncovers Quantitative Link Between Quantum Non-Locality and Uncertainty.
spike66 at att.net
Sun Dec 5 15:50:56 UTC 2010
>... On Behalf Of Damien Broderick
>Can you bounce the light off a mirror, or send it through a lens, before
running it through the two slits, and still get fringes?
Yes to both, although I haven't actually done those experiments, so I am
relying on my suspect understanding. A laser beam doesn't know it has been
reflected off a mirror, as far as I can tell. In every case where I have
used them, they behave the same coming off as they did coming into the
mirror. Sending a light source thru a lens: the double slit result predates
lasers by a long ways. I don't know how the beam was focused, but it stands
to reason they did it somehow.
> I would assume that you can't, because that *would* be a "measurement".
Excellent questions, but it isn't clear to me that sending photons at a
mirror or thru a lens constitutes a measurement. I don't see how a mirror
or refractive element gains any information about a photon with which it
interacts. But I am no expert on this. Open to suggestion.
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