What is radio?

  • (noun): A communication system based on broadcasting electromagnetic waves.
    Synonyms: wireless
    See also — Additional definitions below

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.

Read more about Radio.

Some articles on radio:

Windsor, Ontario - Culture and Tourism - Media
... in Windsor, Ontario Windsor is considered part of the Detroit television and radio market for purposes of territorial rights ... Due to this fact, and its proximity to Toledo and Cleveland, radio and television broadcasters in Windsor are accorded a special status by the Canadian Radio-televisi ... CanCon requirements are sometimes blamed in part 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 the top ...
XESPN-AM - Recent History
... XEMMM-AM, 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 ...
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 ...
Ottumwa, Iowa - Media - Radio
... O-Town Communications 91.1 FM KICW Classical music / Iowa Public Radio University of Northern Iowa ...
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 a specific ...

More definitions of "radio":

  • (verb): Transmit messages via radio waves.
    Example: "He radioed for help"
  • (adj): Indicating radiation or radioactivity.
    Example: "Radiochemistry"

Famous quotes containing the word radio:

    We spend all day broadcasting on the radio and TV telling people back home what’s happening here. And we learn what’s happening here by spending all day monitoring the radio and TV broadcasts from back home.
    —P.J. (Patrick Jake)

    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)

    Denouement to denouement, he took a personal pride in the
    certain, certain way he lived his own, private life,
    but nevertheless, they shut off his gas; nevertheless,
    the bank foreclosed; nevertheless, the landlord called;
    nevertheless, the radio broke,

    And twelve o’clock arrived just once too often,
    Kenneth Fearing (1902–1961)