What is 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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Some articles on radio:

Ottumwa, Iowa - Media - Radio
... Adult contemporary O-Town Communications 91.1 FM KICW Classical music / Iowa Public Radio University of Northern Iowa ...
XESPN-AM - Recent History
... which began broadcasts in 1965, joined ESPN Radio in late 2002, replacing XETRA, which had changed from sports radio to adult standards some months earlier ... In 2009, ESPN Radio moved to sister FM station XHMORE while XESPN joined ESPN Deportes Radio ... ESPN Deportes Radio is now available in the San Diego-Tijuana border region on XESS-AM 620 ...
Field Strength
... In radio frequency telecommunications, field strength is the magnitude of the received electromagnetic field which will excite a receiving antenna and thereby induce a voltage at ...
Telecommunications In Oman - Radio
... Broadcast stations AM 3, FM 9, shortwave 2 (1999) Radios 1.4 million (1997) In April, 2008, Nokia Siemens was appointed to replace parts of the existing ...
Windsor, Ontario - Culture and Tourism - Media
... Media in Windsor, Ontario Windsor is considered part of the Detroit television and radio market for purposes of territorial rights ... its proximity to Toledo and Cleveland, radio and television broadcasters in Windsor are accorded a special status by the Canadian Radio-television and Telecommunications Commission ... for the decline in popularity of Windsor radio station CKLW, a 50,000 watt AM radio station that in the late 1960s (prior to the advent of CanCon) had been ...

More definitions of "radio":

  • (noun): A communication system based on broadcasting electromagnetic waves.
    Synonyms: wireless
  • (verb): Transmit messages via radio waves.
    Example: "He radioed for help"
  • (adj): Indicating radiation or radioactivity.
    Example: "Radiochemistry"

Famous quotes containing the word radio:

    Now they can do the radio in so many languages that nobody any longer dreams of a single language, and there should not any longer be dreams of conquest because the globe is all one, anybody can hear everything and everybody can hear the same thing, so what is the use of conquering.
    Gertrude Stein (1874–1946)

    Local television shows do not, in general, supply make-up artists. The exception to this is Los Angeles, an unusually generous city in this regard, since they also provide this service for radio appearances.
    Fran Lebowitz (b. 1950)

    The radio ... goes on early in the morning and is listened to at all hours of the day, until nine, ten and often eleven o’clock in the evening. This is certainly a sign that the grown-ups have infinite patience, but it also means that the power of absorption of their brains is pretty limited, with exceptions, of course—I don’t want to hurt anyone’s feelings. One or two news bulletins would be ample per day! But the old geese, well—I’ve said my piece!
    Anne Frank (1929–1945)