Dunwoody, General Henry H.C.

Dunwoody, General Henry H.C.
fl. c.1906 USA
American soldier and engineer noted for his discovery of the carborundum radio-signal detector.
An associate of Lee De Forest, Henry Dunwoody discovered in 1906 that the newly invented material silicon carbide (SiC) could be used as a solid-state detector of radio waves. His invention was patented in the UK on 23 March 1906.
23 March 1906, British patent no. 5,332 (use of silicon carbide as a solid-state detector of radio waves).
Further Reading
G.G.Blake, 1926, History of Telegraphy and Telephony, London: Radio Press. See also Branly, Edouard Eugène.

Biographical history of technology. - Taylor & Francis e-Librar. . 2005.

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