The NIST Reference on Constants, Units and Uncertainty

Fundamental Physical Constants
Constants
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Constants,
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Uncertainty
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Click symbol for equation
inverse meter-hartree relationship
 $(1 \ {\rm m}^{-1})hc$
 Numerical value  4.556 335 252 9120 x 10-8 Eh
 Standard uncertainty  0.000 000 000 0088 x 10-8 Eh
  Relative standard uncertainty  1.9 x 10-12
 Concise form  4.556 335 252 9120(88) x 10-8 Eh    
The full description of unit m-1 is cycles or periods per meter.
 
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

 
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