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A New Determination of the Free-Space Velocity of Electromagnetic Waves
K. D. Froome
Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences
Vol. 247, No. 1248 (Sep. 9, 1958), pp. 109-122
Published by: Royal Society
Stable URL: http://www.jstor.org/stable/100591
Page Count: 15
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The paper describes the determination of the free-space phase velocity of electromagnetic waves in vacuo by means of a millimetre-wave interferometer capable of high precision. As already provisionally announced (Froome 1958) the result is: c0 = 299 792· 50 ± 0· 10 km/s, where the variation represents the standard deviation of a single determination in statistical combination with estimated systematic errors.
Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences © 1958 Royal Society