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fine structure constant, α

Atomic fundamental physical constant, α = μ 0 e 2 c 0 2 h = 7.297 353 08 33 × 10 −3, where μ 0 is the permeability of vacuum, e the elementary charge, h the Planck constant, and c 0 the speed of light.
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IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
Last update: 2014-02-24; version: 2.3.3.
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