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Click symbol for equation inverse meter-joule relationship  Value  1.986 445 501 x 10-25 J  Standard uncertainty  0.000 000 099 x 10-25 J   Relative standard uncertainty   5.0 x 10-8  Concise form  1.986 445 501(99) x 10-25 J       Click here for correlation coefficient of this constant with other constants Source: 2006 CODATA      recommended values  Definition of uncertainty       Correlation coefficient with any other constant