electromagnetic spectrum

noun

Definition of electromagnetic spectrum 

: the entire range of wavelengths or frequencies of electromagnetic radiation extending from gamma rays to the longest radio waves and including visible light

Examples of electromagnetic spectrum in a Sentence

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In other words, radio waves and X-rays and visible light were all part of the same electromagnetic spectrum. Meg Neal, Popular Mechanics, "The Eternal Quest for Aether, the Cosmic Stuff That Never Was," 19 Oct. 2018 Included is support for both the sub-6GHz and mmWave portions of the electromagnetic spectrums, as well as legacy networks like, 2G, 3G, and 4G LTE — all in a single chip. Chaim Gartenberg, The Verge, "5G is almost here — here’s how everyone’s getting ready," 7 Sep. 2018 Today, there are observatories that cover the entire electromagnetic spectrum. Eileen Meyer, Smithsonian, "Big Data is Transforming How Astronomers Make Discoveries," 15 May 2018 Swiftly, scores of scientists began pointing their telescopes in that direction, staring at the right region of the universe in every wavelength of the electromagnetic spectrum. Author: Sarah Kaplan, Anchorage Daily News, "In a cosmic first, scientists detect ‘ghost particles’ from a distant galaxy," 12 July 2018 Swiftly, scores of scientists began pointing their telescopes in that direction, staring at the right region of the universe in every wavelength of the electromagnetic spectrum. Sarah Kaplan, chicagotribune.com, "In a cosmic first, scientists detect 'ghost particles' from a distant galaxy," 12 July 2018 The detection also triggered a powerful example of another new trend, multimessenger astronomy, in which telescopes and other instruments studied the flaring blazar in all parts of the electromagnetic spectrum, from gamma rays to radio waves. Daniel Clery, Science | AAAS, "Ghostly particle caught in polar ice ushers in new way to look at the universe," 12 July 2018 The community responded: Nearly 20 telescopes on the ground and in space scoured that patch across the electromagnetic spectrum, from low-energy radio waves to high-energy gamma-rays. Mike Wall, NBC News, "High-energy 'ghost particle' traced to distant galaxy in astronomy breakthrough," 12 July 2018 Beginning in the late 19th century, astronomers began observing invisible wavelengths, from radio waves to gamma rays, bands on the electromagnetic spectrum that are determined by the amount of energy their photons carry. Eoin O'carroll, The Christian Science Monitor, "Neutrino demonstration heralds a new way of observing the cosmos," 12 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'electromagnetic spectrum.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of electromagnetic spectrum

1924, in the meaning defined above

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Last Updated

22 Nov 2018

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The first known use of electromagnetic spectrum was in 1924

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More Definitions for electromagnetic spectrum

electromagnetic spectrum

noun

Medical Definition of electromagnetic spectrum 

: the entire range of wavelengths or frequencies of electromagnetic radiation extending from gamma rays to the longest radio waves and including visible light

More from Merriam-Webster on electromagnetic spectrum

Britannica.com: Encyclopedia article about electromagnetic spectrum

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