The NIST Reference on Constants, Units and Uncertainty

Fundamental Physical Constants
Constants
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Rydberg constant times hc in eV
 $R_\infty hc$
 Value  13.605 692 53 eV
 Standard uncertainty   0.000 000 30 eV
  Relative standard uncertainty   2.2 x 10-8
 Concise form  13.605 692 53(30) eV    
 
Click here for correlation coefficient of this constant with other constants
Source: 2010 CODATA     
recommended values
 
Definition of
uncertainty
 
     Correlation coefficient with
any other constant

 
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