The NIST Reference on Constants, Units and Uncertainty

Fundamental Physical Constants
Constants
Topics:
Values
Energy
Equivalents
Searchable
Bibliography
Background

Constants
Bibliography

Constants,
Units &
Uncertainty
home page
[skip navigation]
Click symbol for equation
Thomson cross section
 $\sigma_{\rm e}$
 Numerical value  6.652 458 7051 x 10-29 m2
 Standard uncertainty  0.000 000 0062 x 10-29 m2
  Relative standard uncertainty  9.3 x 10-10
 Concise form  6.652 458 7051(62) x 10-29 m2    
 
Click here for correlation coefficient of this constant with other constants
Source: 2022 CODATA     
recommended values
 
Definition of
uncertainty
 
     Correlation coefficient with
any other constant

 
Go to a new search