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]
Cu x unit
 ${\rm xu}({\rm CuK}\alpha_{\rm 1})$
 Value  1.002 076 97 x 10-13 m
 Standard uncertainty  0.000 000 28 x 10-13 m
  Relative standard uncertainty   2.8 x 10-7
 Concise form  1.002 076 97(28) x 10-13 m    
 
Click here for correlation coefficient of this constant with other constants
Source: 2014 CODATA     
recommended values
 
Definition of
uncertainty
 
     Correlation coefficient with
any other constant

 
Go to a new search