paschen back effect

Paschen-Back effect

[pah-shuhn-bahk]
noun Physics.
a splitting of spectral lines observed when the source of a radiation is subjected to a strong magnetic field, caused when the vectors associated with the spin and orbital angular momentum exhibit individual rather than common precession.
Compare Zeeman effect.


Origin:
1920–25; named after Friedrich Paschen (1865–1947) and Ernst Back (1881–1959), German physicists

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