Do Photons Conserve Angular Momentum?

[Ontophobe]

Do photons obey the conservation law of angular momentum?

 

[mfb]

There is no conservation law for single particles.
Processes with photons (and, in fact, all processes without external forces[/size]) conserve angular momentum.

 

[Ontophobe]

Thank you for the straight forward answer. What would constitute a process of photons?

 

[mfb]

Every physical system where photons are involved.

Edit: Fixed weird typo

 

[jerromyjon]

refraction for example, wave interference also.

 

[Andy Resnick]

Do photons obey the conservation law of angular momentum?

Photons are circularly polarized ('helicity') to conserve angular momentum (Δl = ±1)