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In this distinguished group which met in Pasadena, Calif., on January 10, 1931 to discuss scientific problems are, left to right: Walter S. Adams, astronomer and director of the Mt. Wilson Carnegie observatory; Dr. Albert A. Michelson, formerly of Chicago University, who measured the speed of light; Dr. Albert Einstein, famed for his theory of relativity; and Dr. Robert A. Millikan, president of the California Institute and discoverer of the cosmic ray. The latter three have been awarded the Nobel Prize. (Photo by AP Photo)
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