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Chaffee, Emory Leon, 1885-1975.
Oral history interview with Emory Leon Chaffee, 1964 January 31.
Graduate study at Harvard University; greatest influence was Wallace C. Sabine; Ph.D. on e/m as a function of accelerating voltage supervised by Harry Moss, 1907; as corollary he developed the "Chaffee quenched gap" for producing continuous oscillations. Work on oxide filament in thermionic vacuum tubes, 1910; the Chaffee Gap used in wireless telegraphy experiments, 1911; mercury arc work with Pierce resulting in mercury vapor detector. World War I: torpedo detectors, double modulation, warbling the spectrum by rotating condenser, super-heterodyne; travels to France and Italy to demonstrate his transmitter. Starts first vacuum tube course in U.S. at Harvard, 1920; work on regeneration in coupled circuits, 1924; elaborate equivalent circuits, 1929; works on electronic response of retina with Bovie (first application of vacuum tubes to biophysics; continued some work of Einthoven), 1920s. In 1930s, works on stimulation of autonomic responses in a monkey's brain (R. U. Light), and power tubes and non-linear systems; becomes chairman of Power Tubes Committee of the Institute of Radio Engineers. Also a short discussion of the invention of crystal oscillators by Cady, Pierce, and Arnold.
Cady, Walter G. (Walter Guyton), 1874-1974
Chaffee, Emory Leon, 1885-1975.
Moss, Harry.
Sabine, Wallace Clement.
Harvard University.
Anti-submarine warfare -- Research.
Condensers (Vapors and gases) -- Experiments.
Detectors -- Research.
Electrons -- Research.
Gas-detectors -- Research.
Mercury arc -- Research.
Modulators (Electronics) -- Research.
Oscillators, Crystal.
Physics -- Instrumentation.
Telegraph, Wireless.
Telegraph, Wireless -- Experiments.
Vacuum-tubes -- Study and teaching.
World War, 1914-1918 -- War work.
Oral histories. aat
Interviews. aat
Sound recordings. aat
Transcripts. aat
Light, R. U.
Institute of Radio Engineers Power Tubes Committee.
Hunt, Frederick V. interviewer.
American Institute of Physics. Niels Bohr Library & Archives. One Physics Ellipse, College Park, MD 20740, USA