The Velocity of Light


In a recent discourse broadcast by the B.B.C., reference was made to my communication in NATURE of April 4 on the subject of the velocity of light. Two objections were presented to the deduction that the velocity of light decreases, derived from the values quoted; these must have occurred to the readers of my letter, so that perhaps I may be allowed to refer to them briefly.

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GHEURY DE BRAY, M. The Velocity of Light. Nature 127, 739–740 (1931).

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