George Clark Southworth (August 24, 1890 – July 6, 1972), who published as G. C. Southworth, was a prominent

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best known for his role in the development of waveguides in the early 1930s.

Biography

Southworth was born in Little Cooley, Pennsylvania, graduated in 1914 with a physics degree from Grove City College, and studied one year at

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. In June 1917 he joined the National Bureau of Standards, then in 1918 moved to

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to teach in a Signal Corps school. He remained at Yale to complete a doctorate in 1923 on the measurement of the

dielectric constant The relative permittivity (in older texts, dielectric constant) is the permittivity of a material expressed as a ratio with the electric permittivity of a vacuum. A dielectric is an insulating material, and the dielectric constant of an insulat ...

of water at frequencies above 15 MHz. Southworth left Yale for a position with the American Telephone and Telegraph Company, where he first helped edit the

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, but then switched to researching

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. In 1931 he began to study wave propagation in dielectric rods, by early 1932 observed wave propagation in a water-filled copper pipe, and by May 1933 transmitted waves through air-filled copper pipes up to 20 feet in length. (He later recalled that the first message sent through a waveguide was "Send money.") After he constructed a 5-in.-diameter waveguide with a length of 875 feet, the project was moved to the Bell Telephone Laboratories in Holmdel, New Jersey, where he spent the rest of his career until retirement in 1955. Southworth received the Morris N. Liebmann Award in 1938, and the IEEE Medal of Honor in 1963 "For pioneering contributions to microwave radio physics, to radio astronomy, and to waveguide transmission."

Selected works

* ''Principles and applications of wave-guide transmission'', New York, Van Nostrand [1950], xi, 689 p. illus. 24 cm. Bell Telephone Laboratories series. LCCN 50009834. * ''Forty years of Radio Research'', 1962.

References

IEEE biography
* James Brittain, "George C. Southworth," ''Proceedings of the IEEE'', Vol. 81, No. 7, July 1993. * L. Van Atta, "A history of early microwave antenna development", ''IEEE Antennas and Propagation Society Newsletter'', volume 23, issue 5, October 1981, pages 10–14.

External links

* {{DEFAULTSORT:Southworth, George Clark 1890 births 1972 deaths Grove City College alumni Columbia University alumni Yale University alumni American electrical engineers Radio pioneers IEEE Medal of Honor recipients 20th-century American engineers 20th-century American inventors Microwave engineers