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Forums
Physics
Quantum Physics
Do atoms recoil when emitting a photon?
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[QUOTE="PeterDonis, post: 6847496, member: 197831"] Go read the second paragraph of my post #22 again. You don't seem to be reading responses very carefully. I strongly suggest that you stop and take a step back and think for a while about what you have been told. Yes. Once again, the reference you yourself gave in post #5 clearly shows that. Did you actually read what it said? This is just another way of saying that temperature is the average kinetic energy of the atoms. It does [I]not[/I], however, say that photons are "bound to the atoms", which is what I told you was nonsense. No, convection and conduction are always present whenever systems are in contact. Whether any [I]net heat transfer[/I] occurs by these modes will depend on the temperatures of the two systems. But the processes themselves are taking place (the atoms at the contact surface are still interacting and exchanging energy) even when the two systems are at the same temperature and aren't exchanging any net heat. [/QUOTE]
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Quantum Physics
Do atoms recoil when emitting a photon?
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