Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Electrons get excited to different energy levels when photons of specific frequencies fall on them.But, is there other particles which absorb the energy of the photons?

share|cite|improve this question
Yes, photons are the mediators of the electric force, and so they interact with any particle with non-zero charge. – David H Nov 10 '13 at 13:21
@DavidH Sir, are the particles that pop in and out of existence which constitute vacuum charged? – Rajath Krishna R Nov 10 '13 at 13:36
Sure. Electrons and positrons for example. – David H Nov 10 '13 at 13:39
@DavidH, particles with magnetic dipole moment, too, no? – lionelbrits Nov 10 '13 at 14:14

Yes, for example nuclei can be resonantly excited in magnetic fields with photons from the radio frequency band, like in NMR.

share|cite|improve this answer

Yes, photons are the interactors of electromagnetic force, so they interact with every particle that has non 0 charge or non 0 magnetic angolar momentum. That means both spin (intrinsic angolar momentum) or orbital angular momentum.

share|cite|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.