01.01.70

Well, when we have clear radiation, it looks more or less as a wave. There is a strong electric field give out, oscillating with the given frequency. It is not useful to speak about "photons", because their tally is not known. For the totally incoherent radiation, the number of photons "is known" whatever that means. Among other things it means that the energized field is "not known". This is a simple account found in more up to date textbooks. But then we can have all those lucky coherence and fluctuations in the "real life".  It has to do with the start of the radiation. If we assume that it originates from transitions between discrete states, and without much stimulated emission, it should be in the attitude of quanta. If there can be a lot of stimulated emission, one could have a lot of coherence and thus a lot of wave-likeness. I feel it would depend on both the energy density and the matter density, but just now I have not the answers.

Source: Science 2.0

by Birdman

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by punpun

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I am in inside San Diego and it gets all of the HDTV stations, both UHF and VHF, and also some Mexican stations. It is in my attic and it has manipulate chain with a few couplers to take it two floors down to my TV. There it has a splitter for my two tuner cards.

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by admin

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