- #1
Khrapko
- 64
- 0
Everyone affirms that a circularly polarized plane wave has no angular momentum, though it contains density of spin. However, a circularly polarized beam of any big diameter has spin angular momentum, which is localized at the surface of the beam, though the spin is allocated in the interior of the beam.
Now imagine that we rotate a huge cosmic body by lighting it with a circularly polarized beam of the correspondingly huge diameter. I ask: Where does the torque act?
Now imagine that we rotate a huge cosmic body by lighting it with a circularly polarized beam of the correspondingly huge diameter. I ask: Where does the torque act?