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fine-structure constant  Value  7.297 352 5698 x 10-3  Standard uncertainty  0.000 000 0024 x 10-3   Relative standard uncertainty   3.2 x 10-10  Concise form  7.297 352 5698(24) x 10-3       Click here for correlation coefficient of this constant with other constants Source: 2010 CODATA      recommended values  Definition of uncertainty       Correlation coefficient with any other constant