Mehl, J.
and Moldover, M.
(1986),
Measurement of the ratio of the speed of sound to the speed of light, Physical Review A, [online], https://doi.org/10.1103/PhysRevA.34.3341, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=925220
(Accessed January 15, 2025)
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Measurement of the ratio of the speed of sound to the speed of light
Published
Author(s)
James B. Mehl,
Abstract
Measurements of the resonance frequencies of the acoustic modes and of the microwave modes of a single cavity can determine u/c, the ratio of the speed of sound of a gas to the speed of light. Such measurements with a monatomic gas would determine the thermodynamic temperature T with unprecedented accuracy. By judicious choices of cavity geometry and resonance modes, u /c can be measured to part-per-million accuracy using cavities whose geometry is known only to parts per thousand. These techniques can also be applied to measurements of the universal gas constant R. A measurement of 8 would also require an accurate determination of the average atomic mass of the monatomic gas.Citation
Physical Review A
Volume
34
Issue
4
Pub Type
Journals
Download Paper
Citation
Issues
If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.
Created September 30, 1986, Updated October 12, 2021