The NIST Reference on Constants, Units and Uncertainty Information at the foundation of modern science and technology from the Physics Laboratory of NIST

CODATA Internationally recommended values of the
Fundamental Physical Constants

Constants
Topics:
Values
Energy
Equivalents
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Bibliography
Background

Constants
Bibliography

Constants,
Units &
Uncertainty
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Latest (1998) values of the constants Version history and disclaimer
  (e.g., electron mass, most misspellings okay)
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See also
     Searchable bibliography on the constants
     Background information related to the constants
     Links to selected scientific data

 

 
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