Photons and Angular Momentum

  • Thread starter Ontophobe
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  • #1
Ontophobe
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Do photons obey the conservation law of angular momentum?
 

Answers and Replies

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

Edit: Fixed weird typo
 
Last edited:
  • #5
jerromyjon
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refraction for example, wave interference also.
 
  • #6
Andy Resnick
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Do photons obey the conservation law of angular momentum?
Photons are circularly polarized ('helicity') to conserve angular momentum (Δl = ±1)
 

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