The NIST Reference on Constants, Units and Uncertainty

Fundamental Physical Constants
Constants
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Wien wavelength displacement law constant
 $b$
 Value  2.897 7721 x 10-3 m K
 Standard uncertainty  0.000 0026 x 10-3 m K
  Relative standard uncertainty   9.1 x 10-7
 Concise form  2.897 7721(26) x 10-3 m K    
 
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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