Text: 1/137 The fine structure constant, designated by the Greek letter alpha (?), is a ratio of other "constants" of nature that, in some theories, could change over cosmic time. Equal to the square of the charge of the electron divided by the speed of light times Planck's constant, alpha would change, according to one recent theory, only if the speed of light changed over time. http://www.physorg.com/news3760.html

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