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Dec 14, 2016 at 21:59 comment added eliu "phonons" is what other people are talking about. Almost like band structure view of matters but with classical mechanics mixed in. I m glad band structure can explain transparency, but it can not explain refraction and optical phenomenons.
Dec 13, 2016 at 17:10 comment added user137289 @eliu The term would be elastic scattering. Descriptions in terms of photons are problematic, I do not find them helpful at all. There is no measurable delay, for example.
Dec 13, 2016 at 16:32 comment added eliu I read about "elastic absorption" on this forum somewhere... the key idea was that: electrons in some material will absorb a photon, jump the band, jump back , then release an identical photon. That's elastic. electrons in other material will absorb a photon, jump to a very high band, jump back a bit, release a smaller photon, wait a bit, jump back a bit again and release a smaller photon again. Or just convert the original photon into vibration without ever releasing a photon. That is inelastic.
Dec 13, 2016 at 8:01 history edited user137289 CC BY-SA 3.0
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Dec 13, 2016 at 7:59 comment added user137289 I cannot guess what you mean by "elastic absorption".
Dec 13, 2016 at 0:46 comment added eliu That confirms my own line of thought regarding band gap. Would you care to comment on my other assertions? thanks
Dec 12, 2016 at 23:32 history answered user137289 CC BY-SA 3.0