Meaning of Larmor theorem

Lar'mor the"orem

Pronunciation: [key]
— Physics. Physics.
  1. the theorem that an electron subjected only to the force exerted by the nucleus about which it is moving will undergo Larmor precession but no other change in motion when placed in a magnetic field.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.