All Questions
8
questions
2
votes
2
answers
76
views
What is the interplay between radiation and photon creation?
While trying to provide an answer to this question, a question popped into my mind. When a charge accelerates, is there always a photon associated with that radiation, or multiple photons? For ...
- 873
1
vote
0
answers
71
views
Why do some electromagnetic waves have more than one photon?
I know that the energy of an EM wave is equal to nhv, where n is the number of photons, but why/how do the number of photons in a wave vary? If a single atom emits an EM wave with an energy of 100 ...
- 53
0
votes
2
answers
170
views
Why do objects emit color even if they are not under the influence of heat?
Do correct me if I am wrong:
I am assuming that, when you heat a material, say iron, the electrons gain thermal energy and jump to a higher energy level. When they fall back, they emit photons of ...
- 185
1
vote
2
answers
198
views
Why is radiation of a particular frequency most intense in black body radiation?
Why is radiation of a particular frequency more intense than other frequencies in black body radiation? Does this mean that most electrons in the object are emitting photons of that frequency?
- 23
1
vote
0
answers
24
views
Feynman Lectures on Physics Vol-I 32-3 Radiation damping. How does this classical result relate to QM?
The following is from https://www.feynmanlectures.caltech.edu/I_32.html#Ch32-S3
Now let us actually calculate the Q of an atom that is emitting light—let us say a sodium atom. For a sodium atom, the ...
- 2,015
2
votes
0
answers
100
views
How can energy conservation not be violated in stimulated emission processes?
Fermis golden rule, derived from time-dependent perturbation theory, give the rate for a quantum system, disturbed by a weak harmonic pertubation with frequency $\omega$, to transition from a state $|...
user224659
-1
votes
1
answer
279
views
How is energy conserved in spontaneous emission?
I was reading through the section on spontaneous emission in Introduction to Quantum Mechanics (2nd Ed.) by Griffiths. In section 9.2.2 he explained that spontaneous emission is really a stimulated ...
- 434
1
vote
2
answers
166
views
Why is the energy expressed in an electron orbital change of state electromagnetic (photon)? [closed]
As I understand it, Schrodinger's wave equation predicts the allowable energy states an electron can have under the electromagnetic forces of a given nucleus (and I assume other 'orbital' electrons). ...
