Photons and Angular Momentum

  • Thread starter Ontophobe
  • Start date
  • #1
60
1

Main Question or Discussion Point

Do photons obey the conservation law of angular momentum?
 

Answers and Replies

  • #2
34,037
9,870
There is no conservation law for single particles.
Processes with photons (and, in fact, all processes without external forces) conserve angular momentum.
 
  • #3
60
1
Thank you for the straight forward answer. What would constitute a process of photons?
 
  • #4
34,037
9,870
Every physical system where photons are involved.

Edit: Fixed weird typo
 
Last edited:
  • #5
1,241
189
refraction for example, wave interference also.
 
  • #6
Andy Resnick
Science Advisor
Education Advisor
Insights Author
7,377
1,827
Do photons obey the conservation law of angular momentum?
Photons are circularly polarized ('helicity') to conserve angular momentum (Δl = ±1)
 
Top