Emission of a Photon: Origin and Role of Electron Constituents

In summary, electrons emit photons when they transition from one energy level to another. The photon comes from a three-way interaction vertex that allows electrons to emit or absorb them spontaneously. The transition is a gradual one, and the atom in a transition actually has an expectation value for a dipole moment.
  • #36
Fact that use of m as symbol for relativistic mass is outdated was the whole point of mfd's comment, and the reason for your reply to denisfl8 being at very least incomplete.

Mass, without qualifier, is assumed to be invariant mass. If you want to talk about relativistic mass, you should qualify that for clarity. Were you to reply that, "Energy is equivalent to relativistic mass," there would be no complaint.
 
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  • #37
K^2 said:
Fact that use of m as symbol for relativistic mass is outdated was the whole point of mfd's comment, and the reason for your reply to denisfl8 being at very least incomplete.

Mass, without qualifier, is assumed to be invariant mass. If you want to talk about relativistic mass, you should qualify that for clarity. Were you to reply that, "Energy is equivalent to relativistic mass," there would be no complaint.
Oh,sorry for that.
 

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