Atomic fundamental physical constant, \(\alpha =\frac{\mu _{0}\ e^{2}\ c_{0}}{2\ h} = 7.297\ 353\ 08\ \left(33\right)\times 10^{-3}\), where \(\mu _{0}\) is the @P04504@, \(e\) the @E02032@, \(h\) the @P04685@, and \(c_{0}\) the speed of light.
Source: CODATA Bull. 1986,
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