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A wave of electromagnetic energy that is radiated by an accelerating or oscillating electric charge and propagates through a vacuum or a material medium as a periodic disturbance of the electromagnetic field at a frequency within the electromagnetic spectrum.
(General Physics) a wave of energy propagated in an electromagnetic field. See also electromagnetic radiation
a wave propagated at the speed of light by the periodic variations of electric and magnetic fields.
A wave of energy consisting of oscillating electric and magnetic fields. Radio waves, light waves, and x-rays are electromagnetic waves.
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|Noun||1.||electromagnetic wave - radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge|
photon - a quantum of electromagnetic radiation; an elementary particle that is its own antiparticle
blackbody radiation, black-body radiation - the electromagnetic radiation that would be radiated from an ideal black body; the distribution of energy in the radiated spectrum of a black body depends only on temperature and is determined by Planck's radiation law
Hertzian wave - an electromagnetic wave generated by oscillations in an electric circuit
gamma radiation, gamma ray - electromagnetic radiation emitted during radioactive decay and having an extremely short wavelength
line - a single frequency (or very narrow band) of radiation in a spectrum
microwave - a short electromagnetic wave (longer than infrared but shorter than radio waves); used for radar and microwave ovens and for transmitting telephone, facsimile, video and data
radiation - energy that is radiated or transmitted in the form of rays or waves or particles
radio emission, radio radiation, radio wave - an electromagnetic wave with a wavelength between 0.5 cm to 30,000 m