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Compton wavelength†  Numerical value  2.426 310 238 67 x 10-12 m  Standard uncertainty  0.000 000 000 73 x 10-12 m   Relative standard uncertainty  3.0 x 10-10  Concise form  2.426 310 238 67(73) x 10-12 m     †The full description of unit m is meter per cycle.   Click here for correlation coefficient of this constant with other constants Source: 2018 CODATA      recommended values  Definition of uncertainty       Correlation coefficient with any other constant