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A New Determination of the Gas Constant by an Acoustic Technique

  • T. J. Quinn
  • A. R. Colclough
  • T. R. D. Chandler

Abstract

A New Determination of The Gas Constant has been made using a method in which the velocity of sound in argon was measured by means of an acoustic interferometer operated close to the triple point of water. Ninety eight independent velocity measurements were made over a pressure range from 30 to 200 kPa to enable the velocity at zero pressure to be obtained by extrapolation. Using this experimental value, a new value for the gas constant of 8316.00 ± 0.17 J K−1 kmole−1 was deduced. This is higher than the old value for R, obtained from measurements of the density of oxygen, by 191 ppm.

Keywords

Systematic Uncertainty Triple Point Boundary Layer Absorption Acoustic Technique Acoustic Absorption Coefficient 
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

© Springer Science+Business Media New York 1976

Authors and Affiliations

  • T. J. Quinn
    • 1
  • A. R. Colclough
    • 1
  • T. R. D. Chandler
    • 1
  1. 1.National Physical LaboratoryTeddington, MiddlesexEngland

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