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IEVref: | 221-01-20 | ID: | |

Language: | en | Status: Standard | |

Term: | Bohr magneton | ||

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Symbol: | µ_{B}
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Definition: | physical constant used to express the magnetic moment of an electron
where NOTE 1 – The numerical value quoted is that adopted by the International Union of Pure and Applied Physics (IUPAP). NOTE 2 – The magnetic moment of a free electron due to its spin is approximately equal to 1,001 | ||

Publication date: | 1990-10 | ||

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Internal notes: | 2017-02-28: ": its value is" deleted, decimal point replaced by decimal comma, - replaced by − and leading article deleted. JGO | ||

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*e h*/4* π m* ≈ (9,274 078 ± 0,000 036) x 10^{−24} Am^{2}

where *e* is the elementary charge, *h* the Planck's constant, and *m* the electron rest mass
_{B}.