The NIST Reference on Constants, Units and Uncertainty

Fundamental Physical Constants
Constants
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inverse meter-hartree relationship
 $ (1\,{\rm m}^{-1})\,h c = [{\rm m}^{-1}\,h c /(2\,hc\, R_\infty)]\, E_{\rm h} $
 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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