An Etymological Dictionary of Astronomy and Astrophysics

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Paschen-Back effect
  ا ُسکر ِ پاشن-بک  
oskar-e Paschen-Back
Fr.: effet Paschen-Back  

An effect on spectral lines obtained when the light source is located in a strong magnetic field. The strong field disrupts the coupling between the orbital and spin angular momenta, resulting in a different pattern of splitting.

See also: Named for the German physicists Friedrich Paschen (1865-1947) and Ernst E. A. Back (1881-1959); → effect.