The NIST Reference on Constants, Units and Uncertainty

Fundamental Physical Constants
Constants
Topics:
Values
Energy
Equivalents
Searchable
Bibliography
Background

Constants
Bibliography

Constants,
Units &
Uncertainty
home page
[skip navigation]
Click equation to show only symbol
hartree-kilogram relationship
 $  (1\,E_{\rm h})/c^2 = [2\,hc\, R_\infty/({\rm kg} \, c^2)]\, {\rm kg} $
 Numerical value  4.850 870 209 5432 x 10-35 kg
 Standard uncertainty  0.000 000 000 0094 x 10-35 kg
  Relative standard uncertainty  1.9 x 10-12
 Concise form  4.850 870 209 5432(94) x 10-35 kg    
 
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

 
Go to a new search