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
kilogram-kelvin relationship
 $(1 \ {\rm kg})c^2/k$
 Value  6.509 651 x 1039 K
 Standard uncertainty  0.000 011 x 1039 K
  Relative standard uncertainty   1.7 x 10-6
 Concise form  6.509 651(11) x 1039 K    
 
Click here for correlation coefficient of this constant with other constants
Source: 2006 CODATA     
recommended values
 
Definition of
uncertainty
 
     Correlation coefficient with
any other constant

 
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