SINCE the velocity of light is one of the most fundamental physical quantities, any measures which indicate its constancy with wave-length are of basic physical interest. Experimental determinations 1 ...
I. IN continuation of my article in the Relativity Number of NATURE (vol. cvi., p. 795, Feb ruary 17, 1921), I propose to discuss more fully, and to express as clearly and simply as possible, some of ...
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