radio radiation

Noun
  1. An electromagnetic wave with a wavelength between 0.5 cm to 30,000 m (synset 111520217)
    is a type of: electromagnetic radiation, electromagnetic wave, nonparticulate radiation - radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge
    subtypes:
    • hertzian wave - a former name for a radio wave; an electromagnetic wave of radio frequency generated by oscillations in an electric circuit
    • sky wave - a radio wave that is reflected back to earth by the ionosphere or a communications satellite; permits transmission around the curve of the earth's surface
    • ground wave - a radio wave propagated on or near the earth's surface
    • radio signal - a radio wave used to transmit and receive messages
    • carrier, carrier wave - a radio wave that can be modulated in order to transmit a signal
    • short wave - a radio wave with a wavelength less than 100 meters (a frequency greater than 3 megahertz)
    • medium wave - a radio wave with a wavelength between 100 and 1000 meters (a frequency between 300 kilohertz and 3000 kilohertz)
    • long wave - a radio wave with a wavelength longer than a kilometer (a frequency below 300 kilohertz)
    is a part of: radio spectrum, radio-frequency spectrum - the entire spectrum of electromagnetic frequencies used for communications; includes frequencies used for radio and radar and television
    same as: radio emission, radio wave

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