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

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

http://www.worldcat.org/oclc/82630906

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.

American Institute of Physics, Niels Bohr Library

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SNAC Resource ID: 8286381

Related Entities

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Harvard University

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Harvard College was founded by a vote of the Great and General Court of Massachusetts on October 28, 1636 that allocated “400£ towards a schoale or colledge.” Subsequent legislative acts established the Board of Overseers, but it was the Charter of 1650 that created the Harvard Corporation as the College's primary governing board and defined its composition and authority. The College Charter became a contentious target for College officials, the Massachusetts Governor and General C...

Sabine, Wallace Clement

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Sabine (Harvard, Ph.D., 1888) taught physics at Harvard and was Dean of the Graduate School of Applied Science. From the description of Papers of Wallace Clement Sabine, 1899-1919 (inclusive) (Harvard University). WorldCat record id: 76972869 ...

Moss, Harry.

http://n2t.net/ark:/99166/w6q61hdc (person)

Cady, Walter G. (Walter Guyton), 1874-1974

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Prof. of Physics, Wesleyan University. Died 1974. From the description of Oral history interview with Walter Guyton Cady, 1963 August 28 and 29. (Unknown). WorldCat record id: 84584492 Physicist (electrical discharges in gases, pieozoelectricity, ultrasonics, peizoelectric resonators and oscillators, and crystal devices). Graduated from Brown University (B.Ph., 1895; A.M., 1896) and the University of Berlin (Ph.D. Physics, 1900). Served 1902-1946 as a professor of physics at...

Chaffee, Emory Leon

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

Hunt, Frederick V.

http://n2t.net/ark:/99166/w6br8tk3 (person)

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 ...