- electromagnetic spectrum
the entire spectrum, considered as a continuum, of all kinds of electric, magnetic, and visible radiation, from gamma rays having a wavelength of 0.001 angstrom to long waves having a wavelength of more than 1 million km.[1935-40]
* * *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).
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Look at other dictionaries:
electromagnetic spectrum — n the entire range of wavelengths or frequencies of electromagnetic radiation extending from gamma rays to the longest radio waves and including visible light * * * the continuous range of electromagnetic energy from cosmic rays to electric waves … Medical dictionary
electromagnetic spectrum — n. the complete range of frequencies of electromagnetic waves from the lowest to the highest, including, in order, radio, infrared, visible light, ultraviolet, X ray, and gamma ray waves … English World dictionary
Electromagnetic Spectrum — [engl.], elektromagnetisches Spektrum … Universal-Lexikon
electromagnetic spectrum — Electromagnetic Spectrum Электромагнитный спектр Спектр электромагнитных волн, покрывающий широкий диапазон длин волн и включающий радио , ИК , видимое, УФ и гамма излучение … Толковый англо-русский словарь по нанотехнологии. - М.
Electromagnetic spectrum — The electromagnetic (EM) spectrum is the range of all possible electromagnetic radiation frequencies. [cite web|url=http://imagine.gsfc.nasa.gov/docs/dict ei.html#em spectrum|title=Imagine the Universe! Dictionary] The electromagnetic spectrum… … Wikipedia
electromagnetic spectrum — noun the entire frequency range of electromagnetic waves • Hypernyms: ↑spectrum • Part Meronyms: ↑radio frequency, ↑extremely low frequency, ↑ELF, ↑very low frequency, ↑VLF, ↑low f … Useful english dictionary
electromagnetic spectrum — The ordered array of known electromagnetic radiation, extending from the shortest cosmic rays, through gamma rays, X rays, ultraviolet radiation, visible radiation, and infrared radiation. It includes microwave and all other wavelengths of radio… … Aviation dictionary
electromagnetic spectrum — elec′tromagnet′ic spec′trum n. phs elm the entire continuous spectrum of all forms of electromagnetic radiation, from gamma rays to long radio waves … From formal English to slang
electromagnetic spectrum — The range of frequencies of electromagnetic radiation from zero to infinity. It is divided into 26 alphabetically designated bands. See also electronic warfare … Military dictionary
electromagnetic spectrum — noun Date: circa 1934 the entire range of wavelengths or frequencies of electromagnetic radiation extending from gamma rays to the longest radio waves and including visible light … New Collegiate Dictionary