Definition: a constant in the equation relating the difference in energies between parallel and antiparallel spin alignments of electrons in a magnetic field; the net magnetic moment of one unpaired electron; used in electron spin resonance spectrometry for detection and estimation of free radicals; the smallest unit of magnetic moment (approximately 9.274 × 10-24 J T-1).
Synonym(s): electron magneton
[Niels H. D. Bohr]
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