Abstract
THE free-space phase velocity of electromagnetic waves in vacuo has been measured by means of a millimetre-wave interferometer operating at a frequency of 72 Gc./s., corresponding to a wave-length of about 4 mm. The result is: c0 = 299 792.50 ± 0.10 km./s.
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Froome, K. D., Proc. Roy. Soc., A, 223, 195 (1954).
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FROOME, K. Precision Determination of the Velocity of Electromagnetic Waves. Nature 181, 258 (1958). https://doi.org/10.1038/181258a0
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DOI: https://doi.org/10.1038/181258a0
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