Radio

Radio

Radio is the wireless transmission of signals through free space by electromagnetic radiation of a frequency significantly below that of visible light, in the radio frequency range, from about 30 kHz to 300 GHz. These waves are called radio waves. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space.

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Famous quotes containing the word radio:

    “from above, thin squeaks of radio static,
    The captured fume of space foams in our ears—”
    —Hart Crane (1899–1932)

    “A liberal is a socialist with a wife and two children.”
    —Anonymous. BBC Radio 4 (April 8, 1990)

    “All radio is dead. Which means that these tape recordings I’m making are for the sake of future history. If any.”
    —Barré Lyndon (1896–1972)