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radio frequency
(Encyclopedia) radio frequency, range of electromagnetic waves with a frequency or wavelength suitable for communication uses. Some of these waves serve as carriers of the lower-frequency audio waves…satellite radio
(Encyclopedia) satellite radio: see digital radio.radio altimeter
(Encyclopedia) radio altimeter: see altimeter.radio beacon
(Encyclopedia) radio beacon: see radio range.Radio City
(Encyclopedia) Radio City: see Rockefeller Center.radio compass
(Encyclopedia) radio compass: see radio range.radio telescope
(Encyclopedia) radio telescope: see radio astronomy.Jansky, Karl Guthe
(Encyclopedia) Jansky, Karl Guthe, 1905–50, American radio engineer; b. Norman, Okla. After graduating (1927) from the Univ. of Wisconson, he joined the Bell Telephone Laboratories. While trying to…Ryle, Sir Martin
(Encyclopedia) Ryle, Sir Martin, 1918–84, British radio astronomer, B.S. Oxford, 1939. Ryle was a researcher and professor at Cambridge from 1945 until his retirement in 1982. Knighted in 1966, he…De Forest, Lee
(Encyclopedia) De Forest, Lee, 1873–1961, American inventor, b. Council Bluffs, Iowa, grad. Yale, 1896. He was a pioneer in the development of wireless telegraphy, sound pictures, and television. His…Trending
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