Autograph Letter Signed ("A. Einstein") in German, 2 pp, 16mo, on "California Institute of Technology, Pasadena" note card, with envelope addressed to Roy J. Kennedy Department of Physics, University of Washington, Seattle, Washington, stamp dated 27 Feb., 1932. Einstein writes to Roy J. Kennedy " Dear colleague! Mr. Tolman just presented in the seminar about your nice measurements with the interferometer. We all have admired the ingenious method by which you have observed such small displacements of the interference fringes. It was also very laudable to look so carefully for an influence of the electric potential on the emission frequency. With best regards, A. Einstein ." Einstein was a visiting professor at Caltech from 1931 to 1933. His friend Richard Tolman was a professor of mathematical physics at Caltech and made important contributions to theoretical cosmology in the years following Einstein's discovery of general relativity. The recipient of the note Roy J. Kennedy (1897-1986) at the Department of Physics at the University of Washington, published the findings, Einstein is probably referring to in "Experimental Establishment of the Relativity of Time," in the Physical Review, 42 (1 November 1932).
Autograph Letter Signed ("A. Einstein") in German, 2 pp, 16mo, on "California Institute of Technology, Pasadena" note card, with envelope addressed to Roy J. Kennedy Department of Physics, University of Washington, Seattle, Washington, stamp dated 27 Feb., 1932. Einstein writes to Roy J. Kennedy " Dear colleague! Mr. Tolman just presented in the seminar about your nice measurements with the interferometer. We all have admired the ingenious method by which you have observed such small displacements of the interference fringes. It was also very laudable to look so carefully for an influence of the electric potential on the emission frequency. With best regards, A. Einstein ." Einstein was a visiting professor at Caltech from 1931 to 1933. His friend Richard Tolman was a professor of mathematical physics at Caltech and made important contributions to theoretical cosmology in the years following Einstein's discovery of general relativity. The recipient of the note Roy J. Kennedy (1897-1986) at the Department of Physics at the University of Washington, published the findings, Einstein is probably referring to in "Experimental Establishment of the Relativity of Time," in the Physical Review, 42 (1 November 1932).
.jpg "Quelle: Christie's")
.jpg "Quelle: Christie's")
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