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Radio Frequencies (table)
(Encyclopedia)Radio FrequenciesHertz, Heinrich Rudolf
(Encyclopedia)Hertz, Heinrich Rudolf hĕrts [key], 1857–94, German physicist. He confirmed J. C. Maxwell's electromagnetic theory and in the course of experiments (1886–89) produced and studied electromagnetic...inductor
(Encyclopedia)inductor, electric device consisting of one or more turns of wire and typically having two terminals. An inductor is usually connected into a circuit in order to raise the inductance to a desired valu...interval
(Encyclopedia)interval, in music, the difference in pitch between two tones. Intervals may be measured acoustically in terms of their vibration numbers. They are more generally named according to the number of step...stereophonic sound
(Encyclopedia)stereophonic sound, sound recorded simultaneously through two or more electronic channels. For live recordings, microphones are placed in different positions relative to the sound source. The recorded...Wood, Robert Williams
(Encyclopedia)Wood, Robert Williams, 1868–1955, American physicist, b. Concord, Mass., grad. Harvard (B.A., 1891). After studying abroad he became associated with Johns Hopkins as professor of experimental physic...Yang, Chen-ning
(Encyclopedia)Yang, Chen-ning chĕn-nĭng yäng [key], 1922–, American physicist, b. China, Ph.D. Univ. of Chicago, 1948. Yang was a member of the Institute for Advanced Study at Princeton, N.J. from 1949 to 1955...Ditko, Steve
(Encyclopedia)Ditko, Steve (Stephen John Ditko), 1927–2018, American comic-book artist, b. Johnstown, Pa., studied early 1950s Cartoonist and Illustrator School (later School of Visual Arts), New York City. Much ...Hopper, Dennis Lee
(Encyclopedia) Hopper, Dennis Lee, 1936-2010, American filmmaker and actor, b. Dodge City, Ks. Hopper’s family relocated several times during his childhood, settli...Tombaugh, Clyde William
(Encyclopedia)Tombaugh, Clyde William tŏmˈbô [key], 1906–97, American astronomer, b. Streator, Ill. Although lacking formal training or a college degree, he was hired in 1929 as an assistant by the Lowell Obse...Browse by Subject
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