The Thomas precession factor in spin–orbit interaction

@article{Kroemer2004TheTP,
  title={The Thomas precession factor in spin–orbit interaction},
  author={Herbert Kroemer},
  journal={American Journal of Physics},
  year={2004},
  volume={72},
  pages={51-52}
}
  • H. Kroemer
  • Published 2 October 2003
  • Physics
  • American Journal of Physics
The origin of the Thomas factor 1/2 in the spin–orbit Hamiltonian can be understood by considering the case of a classical electron moving in crossed electric and magnetic fields chosen such that the electric Coulomb force is balanced by the magnetic Lorentz force. 
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