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radiation

Definitions of radiation
  1. noun
    energy that is radiated or transmitted in the form of rays or waves or particles
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    types:
    onde électromagnétique
    radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge
    radiation actinique
    electromagnetic radiation that can produce photochemical reactions
    radiation gamma
    electromagnetic radiation emitted during radioactive decay and having an extremely short wavelength
    raie
    a single frequency (or very narrow band) of radiation in a spectrum
    type of:
    énergie
    (physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs
  2. noun
    an electromagnetic wave with a wavelength between 0.5 cm to 30,000 m
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    types:
    ondes longues
    a radio wave with a wavelength less than 100 meters (a frequency greater than 3 megahertz)
    type of:
    onde électromagnétique
    radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge
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