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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Compton wavelength
 $\lambda_{\rm C}$
 Value  2.426 310 2175 x 10-12 m
 Standard uncertainty  0.000 000 0033 x 10-12 m
  Relative standard uncertainty   1.4 x 10-9
 Concise form  2.426 310 2175(33) x 10-12 m    
 
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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