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electromagnetic spectrum

   Also found in: Dictionary/thesaurus, Medical, Acronyms, Wikipedia, Hutchinson 0.03 sec.

electromagnetic spectrum

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The spectrum of electromagnetic waves ranges from low-frequency radio waves to high-frequency gamma …
(credit: © Merriam-Webster Inc.)
Total range of frequencies or wavelengths of electromagnetic radiation. The spectrum ranges from waves of long wavelength (low frequency) to those of short wavelength (high frequency); it comprises, in order of increasing frequency (or decreasing wavelength): very-low-frequency to ultrahigh-frequency radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. In a vacuum, all waves of the electromagnetic spectrum travel at the same speed: 299,792,458 m/sec (186,282 mi/sec).

See spectrum.
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The case for anthropogenic global warming necessarily rests upon the presumptions that (1) the sun is an isotropic and isochronous radiator, and (2) that the energy density of space, filled with electromagnetic radiation across the entire electromagnetic spectrum from trillions of cosmic radiators, is a constant.
Global warming by Muhlenberg, John D.S. / The New American
The definition of Cyberspace must be broad enough to enable us to integrate the vast possibilities that the electromagnetic spectrum offers now and for the future.
Cyberspace as a domain in which the Air Force flies and fights by Wynne, Michael W. / Air Force Speeches
They are part of the electromagnetic spectrum, which also includes radio waves, infrared light, ultraviolet rays, X rays, and gamma rays.
Invisibility ring by Gramling, Carolyn / Science News for Kids
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