Radio is the technology of using radio waves to carry information, such as sound, by systematically modulating properties of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width. When radio waves strike an electrical conductor, the oscillating fields induce an alternating current in the conductor. The information in the waves can be extracted and transformed back into its original form.

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Television

Television (TV) is a telecommunication medium used for transmitting moving images in monochrome (black and white), or in colour, and in two or three dimensions and sound. The term can refer to a television set, a television program ("TV show"), or the medium of television transmission. Television is a mass medium for advertising, entertainment and news.

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Radio

Let the future tell the truth and evaluate each one according to his work and accomplishments. The present is theirs; the future, for which I really worked, is mine.

Nikola Tesla, On patent controversies regarding the invention of Radio and other things, as quoted in "A Visit to Nikola Tesla" by Dragislav L. Petković in Politika (April 1927); as quoted in Tesla, Master of Lightning (1999) by Margaret Cheney, Robert Uth, and Jim Glenn, p. 73 ISBN 0760710058 ; also in Tesla: Man Out of Time (2001) by Margaret Cheney, p. 230 ISBN 0743215362 .

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Press

Whenever the press quits abusing me I know I'm in the wrong pew. I don't mind it because when they throw bricks at me—I'm a pretty good shot myself and I usually throw 'em back at 'em.

Harry S. Truman, speech at a dinner in his honor, Washington, D.C., February 22, 1958.—Text as recorded by The New York Times, February 23, 1958, p. 46.

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Television

Thanks to TV and for the convenience of TV, you can only be one of two kinds of human beings, either a liberal or a conservative.

Kurt Vonnegut, in Cold Turkey at In These Times (10 May 2004)

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