Oral history interview with Emory Leon Chaffee, 1964 January 31.


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.

Preliminary transcript.


SNAC Resource ID: 8286381

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Harvard University

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Sabine, Wallace Clement

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Moss, Harry.

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Chaffee, Emory Leon

http://n2t.net/ark:/99166/w6q8459q (person)

Hunt, Frederick V.

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Hunt (1905-1972) graduated from Harvard in 1928 and taught physics and communication engineering at Harvard. From the description of Papers of Frederick V. Hunt, 1927-1970 (inclusive). (Harvard University). WorldCat record id: 76973072 Lifespan 1905-1972. From the description of Oral history interview with Frederick Vinton Hunt, 1964 December 18. (Unknown). WorldCat record id: 83510555 Frederick Vinton Hunt (1905-1972), an American educator ...