Nobel Prize-winning physicist (1868-1953) who was the first to isolate the electron and measure its charge. TLS signed “R. A. Millikan,” one page, 8.5 x 11, California Institute of Technology letterhead, June 3, 1930. Letter to Seymour Halpern, in full: "Replying to the inquiry contained in your letter of May 26th, if I have had what you call success, which is a matter of considerable doubt, I don't think I have the ability to analyze usefully the causes. Some of them have undoubtedly been, as is the case with all of us, entirely outside of my control. If there were any of them which are due to my own qualities I presume they are the result largely of pretty intense and prolonged application, a habit which I learned early in youth." In fine condition, with light creasing to the bottom edge.
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