Planck's radiation law
Americannoun
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the law that energy associated with electromagnetic radiation, electromagnetic radiation, as light, is composed of discrete quanta of energy, each quantum equal to Planck's constant times the corresponding frequency of the radiation: the fundamental law of quantum mechanics.
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the law giving the spectral distribution of radiation from a blackbody.
Etymology
Origin of Planck's radiation law
First recorded in 1905–10; named after M. K. E. Planck
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
