Constants Topics: Values Energy Equivalents Searchable Bibliography Background Constants Bibliography Constants, Units & Uncertainty home page

Click symbol for equation electron mass in u  Numerical value  5.485 799 090 65 x 10-4 u  Standard uncertainty  0.000 000 000 16 x 10-4 u   Relative standard uncertainty  2.9 x 10-11  Concise form  5.485 799 090 65(16) x 10-4 u       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