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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helion shielding shift
 $\sigma_h$
 Numerical value  5.996 743 x 10-5
 Standard uncertainty  0.000 010 x 10-5
  Relative standard uncertainty  1.7 x 10-6
 Concise form  5.996 743(10) x 10-5    
 
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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