electromagnetic waves

Cultural  

1. Waves composed of undulating electrical fields and magnetic fields. The different kinds of electromagnetic waves, such as light and radio waves, form the electromagnetic spectrum. All electromagnetic waves have the same speed in a vacuum, a speed expressed by the letter c (the speed of light) and equal to about 186,000 miles (or 300,000 kilometers) per second.

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Example Sentences

Lasers and radio are both invisible electromagnetic waves but lasers, usually ultraviolet light, offer cost, security and space-saving advantages.

From The Wall Street Journal • May 12, 2026

Lasers and radio are both invisible electromagnetic waves but lasers, usually ultraviolet light, offer cost, security and space-saving advantages.

From The Wall Street Journal • May 12, 2026

His research showed that plasma around the pulsar bends and spreads electromagnetic waves through diffraction, helping form the pattern.

From Science Daily • Mar. 28, 2026

The technology can sift through vast quantities of data, including "satellite images, radar, electromagnetic waves, sound, drone images and sometimes real-time video," he added.

From Barron's • Mar. 7, 2026

So the Hab canvas shields from electromagnetic waves.

From "The Martian" by Andy Weir