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"[EMAIL PROTECTED] \(formerly\)" <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>... > Dear Aleksandr Timofeev: > > "Aleksandr Timofeev" <[EMAIL PROTECTED]> wrote in message > news:[EMAIL PROTECTED] > > "[EMAIL PROTECTED] \(formerly\)" <[EMAIL PROTECTED]> wrote in message > news:<[EMAIL PROTECTED]>... > > > Dear Bill Hobba: > > > > > > "Bill Hobba" <[EMAIL PROTECTED]> wrote in message > > > news:[EMAIL PROTECTED] > > > > David Smith wrote: > > > > > > No detectable consequences. Determination of self-interference > of a > single > > > > > > photon is not possible. Only for a population of photons is a > statistical > > > > > > distribution measureable. > > > > > > > > > > > > > Craig Markwardt wrote: > > > > > Taken at its face value, this statement is not correct. The very > > > > > clever experiment by Grangier et al [ref. 1], first devised a > > > > > mechanism to select for single photons using a pair of calcium > > > > > transitions and a coincidence window. These "single" photons were > > > > > then passed, one at a time, through a Michelson interferometer, and > > > > > fringes were produced! I.e., the photon interfered with itself. > > > > > > > > > > The point is that addition of the interferometer introduces > > > > > uncertainty over which arm the photon passed through, and is thus > > > > > quantum probabilistic arguments play a role. > > > > > > > > Interesting effect - thanks for the reference. However I agree with > David - > > > > the results of one photon prove nothing - you need to do the > experiment > > > > several times (or equivalently with a number of different photons) to > > > > determine that is taking place. > > > > > > The experiment he cited actually had a lot of photons emitted and > detected, > > > I think you'll find. But the rate at which they were emitted was such > that > > > there was only "one" in the path at a time. "One" being some number > less > > > than one hundred, most likely. > > > > > > I think Mr. Markwardt just wanted to patch a hole he (rightly) felt I > had > > > left in the discussion. > > > > > > > Diffraction is a single photon interfering with > > > itself, a whole host of them. > > > > The self-interference of "photon" is impossible in VLBI physically > > on principle, the since each radio telescope is simultaneously both > > "slot" and "detector", and VIRTUAL of VLBI an interference is > > a corollary of mathematical addition of the information from > > video cassettes. > > You have claimed this many, many times, and when challenged, you unable to > support your claim. > > Rotate the polarizer, and see how many "signals" are lost. The readers of the thread hardly perceive physical sense of a hint written here by you. >;^)) Whether you can describe your problem in more detail? > David A. Smith
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