The fine structure constant and the speed of light
Recently, Davies, Davis and Lineweaver have concluded that a possible detection of a cosmological variation in the fine structure constant, a = e[superscript 2] /ħc (where e is the electronic charge, ħ is the reduced Planck constant and c is the speed of light) implies that the speed of light decreases as the Universe expands. In examining the two competing reasons for the variation of this fundamental parameter – an increase in the electronic charge or a decrease in the speed of light – they...[Show more]
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