electromagnetic radiation

noun

Updated on: 12 Apr 2018

Definition of electromagnetic radiation

: energy in the form of electromagnetic waves; also : a series of electromagnetic waves

See electromagnetic radiation defined for kids

Recent Examples of electromagnetic radiation from the Web

While a traditional dry sauna simply heats the surrounding air to around 190 degrees, far infrared saunas use infrared lamps to release electromagnetic radiation, which can be absorbed by the body as much as 1.5 inches under the skin.

— jamie lisanti, SI.com, "Far Infrared Saunas: Explaining the Latest Trend in Athlete Recovery," 9 Apr. 2018
Below the device, a 400-megahertz pulse of electromagnetic radiation continually sweeps the earth.

— peter brannen, Washington Post, "A search of James Madison’s Virginia estate uncovers evidence of slaves who lived on his land," 2 Jan. 2018
Radio-frequency energy is non-ionizing electromagnetic radiation, which doesn’t have enough energy to remove electrons from atoms.

— ars technica, SELF, "Here’s How to Handle Unfounded Fears About Cell Phones Causing Cancer," 19 Dec. 2017
In this paper, the authors identify and discuss nine potential sources of experimental errors, including rogue air currents, leaky electromagnetic radiation, and magnetic interactions.

— National Geographic, "NASA Team Claims ‘Impossible’ Space Engine Works—Get the Facts," 21 Nov. 2016
Radio-frequency energy is non-ionizing electromagnetic radiation, which doesn’t have enough energy to remove electrons from atoms.

— ars technica, SELF, "Here’s How to Handle Unfounded Fears About Cell Phones Causing Cancer," 19 Dec. 2017
Radio-frequency energy is non-ionizing electromagnetic radiation, which doesn’t have enough energy to remove electrons from atoms.

— ars technica, SELF, "Here’s How to Handle Unfounded Fears About Cell Phones Causing Cancer," 19 Dec. 2017
Radio-frequency energy is non-ionizing electromagnetic radiation, which doesn’t have enough energy to remove electrons from atoms.

— beth mole, Ars Technica, "California: Here’s how to handle unfounded fears of cell phone cancer," 16 Dec. 2017
Gravitational waves and the photons of electromagnetic radiation are not the only messengers from the universe.

— eva botkin-kowacki, The Christian Science Monitor, "Neutron star collision heralds arrival of a new era of astronomy," 16 Oct. 2017

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