light quantum

American

noun

Physics.

photon.

Etymology

Origin of light quantum

First recorded in 1920–25

Example Sentences

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light quantum

Relativity deals with time, space, gravity, the finite speed of light; quantum mechanics with particles, electricity, the action of light.

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023