The NIST Reference on Constants, Units and Uncertainty

Fundamental Physical Constants
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conventional value of henry-90
 $H_{90} = (R_{\rm K}/R_{{\rm K}-90})\,{\rm H}$
 Numerical value  1.000 000 017 79... H
 Standard uncertainty  (exact)
  Relative standard uncertainty  (exact)
 Concise form  1.000 000 017 79... H    
 
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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