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Recollections of physics community in 1920s and early 1930s; opportunities for physics work in Europe; awareness of political climate in Germany (1932); relationship with Werner Heisenberg at University of Leipzig; awarded Rockefeller Fellowship to study at University of Rome; contacts with physicists after Leipzig and before Rome; John Von Neumann's list of refugee physicists; offered appointment to position at Stanford University; visit to University of Copenhagen and Niels Bohr's advice to accept appointment; relinquishing of second half of fellowship; influenced by Bohr, Heisenberg and others; Bloch's influence on Enrico Fermi leading to theory of neutrino; met by Gregory Breit on arrival in New York; initial teaching duties at Stanford; theoretical physics in America in 1934; distinctions between Europe and America on theory vs. experiment; seminars with J. Robert Oppenheimer; first interest in experimental work; early research on neutrons; recollections of 1935 Michigan Summer School; started Stanford Summer School in 1936 with George Gamow as first visitor (Fermi 1937, Isidor Isaac Rabi 1938, Victor F. Weisskopf 1939); origin of idea of neutron polarization; 1936 paper proposing neutron magnetic moment experiment; 1937 Galvani Conference in Bologna; use of Berkeley 37-inch cyclotron for magnetic moment experiment; decision to build cyclotron at Stanford; construction supported by Rockefeller Foundation; initial involvement with Manhattan Project; recollections of receiving news of fission; neutron work for Manhattan Project at Stanford; marriage in 1940; work on implosion at Los Alamos Scientific Laboratory; reasons for leaving Los Alamos; work on radar at Harvard University; first ideas on measuring nuclear magnetic resonance (NMR); helpfulness of radar experience in NMR work; William W. Hansen and the klystron; fate of the first Stanford cyclotron; knowledge of Edward M. Purcell's work on NMR; publication of initial results, 1946-1948; Rabi and Polykarp Kusch's work on molecular beams; development of NMR field; Nobel Prize award; association with CERN, 1954; contributions of greatest impact.
Born in Oregon 1912, entered Purdue University, 1932, studying solid state physics, teaching assistant work with Lothar Nordheim on crystal structure, 1937; Ph.D. thesis, 1937 (published 1940); physics department under Karl Lark-Horovitz grows in the 1930s, visiting lecturers (refugees from Germany and Europe: Lothar Nordheim, Hans Bethe, Edward Teller, Eugene Wigner). First cyclotron (homemade), 1935. War work: basic research in germanium, rectification of crystals (Bethe), close connections with Massachusetts Institute of Technology, Columbia University, University of Pennsylvania; Lark-Horovitz chose solid state physics as less sensitive field with respect to clearance; showed silicon-germanium intrinsic semiconductors, 1942; General Electric’s germanium interest; success interpreting resistivity and thermoelectric behavior in germanium, 1944. American Physical Society meeting intense interest in Purdue presentations, January 1946; the transistor, 1948 (William Shockley, Ralph Bray); how to grow germanium crystals, 1949; Esther Conwell’s thesis (Victor Weisskopf). Also prominently mentioned are: John Backus, Seymour Benzer, Hubert Maxwell James, A. A. Knowlton, K. W. Meissner, E. P. Miller, Ronald Smith, Herbert J. Yearian; and Purdue University Department of Physics.