Bohr magneton

noun

Definition of Bohr magneton 

: a magneton based on quantum theory equal to about 927.4×10−26 joule per tesla per particle States near the energy gap are predicted to have an orbital magnetic moment … that is much larger than the Bohr magneton (the magnetic moment of an electron due to its spin). —E. D. Minot et al., Nature, 1 Apr. 2004

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First Known Use of Bohr magneton

1923, in the meaning defined above

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The first known use of Bohr magneton was in 1923

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