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Status of the Fundamental Constants

  • E. Richard Cohen

Abstract

In 1973 Cohen and Taylor1 published an analysis and adjustment of the fundamental physical constants which was subsequently adopted and recommended for general use by C0DATA.2 As is the usual fate of such publications, the paper was rapidly challenged by new measurements of the velocity of light, c; the Rydberg constant, R; the ampere realization, K; the Faraday constant, F; the proton gyromagnetic ratio, γp’; the Avogadro constant, NA; and the gas constant, Ro; as well as improved theoretical calculations of the anomalous moment of the electron and of the higher order corrections to fine structure and hyperfine structure separations in positronium, muonium and helium. The entire situation was reviewed by Taylor and Cohen at AMCO-V in 1975, where much of this new data was also reported.3

Keywords

Gyromagnetic Ratio Fundamental Constant Fine Structure Constant Compton Wavelength Avogadro Constant 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • E. Richard Cohen
    • 1
  1. 1.Rockwell International Science CenterThousand OaksUSA

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