Melvin Schwartz of Columbia University has received the 1964 American Physical Society Prize, sponsored by the Hughes Aircraft Company. The $2500 award, which was presented by APS President Robert F. Bacher on December 22 during the Society's 1964 winter meeting in the west, honored Dr. Schwartz for his “experimental studies of weak interactions and in particular for the use of high‐energy neutrinos.” In 1962, Dr. Schwartz, together with L. M. Lederman, J. Steinberger, J. M. Gaillard, G. Danby, K. Goulianos, and N. Mistry, performed an experiment at Brookhaven National Laboratory which demonstrated the existence of two kinds of neutrinos, one associated with electrons and the other with muons. The experiment was subsequently reported in Physical Review Letters, Vol. 9, No. 1, July 1, 1962.

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