electromagnetic wave

noun

Definition of electromagnetic wave

: one of the waves that are propagated by simultaneous periodic variations of electric and magnetic field intensity and that include radio waves, infrared, visible light, ultraviolet, X-rays, and gamma rays

Examples of electromagnetic wave in a Sentence

Recent Examples on the Web

The scientific instrument known as the Dreamcatcher emits electromagnetic waves that penetrate the sheets of ice below. — Daniela Hernandez, WSJ, "Climate’s Big Unknown: What’s Happening Beneath Antarctica’s Ice?," 29 Dec. 2018 No obviously artificial electromagnetic waves, and so forth. — Rob Reid, Ars Technica, "Ars on your lunch break, week 4: Fermi’s Paradox and the empty universe," 10 July 2018 In the wall’s appliance-detection mode, the power is turned off, and the electrodes act as an antenna to passively pick up electromagnetic waves emitted by nearby devices. — Prachi Patel, Scientific American, "How to Convert Your Wall into a Giant Touch Screen," 1 June 2018 Around the same time, Giuseppe Cocconi and Philip Morrison from Cornell University theorized that aliens would contact us via electromagnetic waves and over the frequency of 1420 MHz. — Matt Blitz, Popular Mechanics, "We Can Explore Instead of Believe: Inside the Epic Hunt for E.T.," 30 Apr. 2018 The Miele Dialog oven is a full oven, not a countertop oven, that also holds the promise of precisely controlling the cooking process, through electromagnetic waves that are emitted at specific frequencies. — Lauren Goode, WIRED, "Brava Hopes to Heat Up the 'Smart Kitchen' With a $995 Oven," 10 July 2018 Another researcher figured out how to take math that could describe electromagnetic waves and modify it to describe gravitational waves. — John Timmer, Ars Technica, "Gravitational waves and the slow pace of scientific revolutions," 30 June 2018 If invisible electromagnetic waves traveling at the speed of light could bring Fibber McGee’s voice into your living room, perhaps spirit photography was possible as well. — Mary Carole Mccauley, baltimoresun.com, "Behind the magic of Harry Houdini at the Jewish Museum of Maryland," 29 June 2018 Previous claims have linked electromagnetic waves and other environmental factors to the disease, but Greaves dismissed this link in his paper. — Meera Senthilingam And Jessie Yeung, CNN, "A germ-free childhood could trigger leukemia, scientist suggests," 22 May 2018

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