Planck\'s radiation law

Planck's radiation law

 
noun Physics.
1.
the law that energy associated with 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.
2.
the law giving the spectral distribution of radiation from a blackbody.
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Also called Planck radiation formula, Planck's law.

Origin:
1905–10; named after M. K. E. Planck
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Planck's radiation law is always a great word to know.
So is gravitational field. Does it mean:
the attractive effect of matter on other matter; the region surrounding an astronomical body in which the force of gravitation is strong
any of the energy levels of a physical system, such as an atom or molecule, that has higher energy than the lowest energy level
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WordNet
planck's radiation law

noun
(physics) an equation that expresses the distribution of energy in the radiated spectrum of an ideal black body 
WordNet® 3.0, © 2006 by Princeton University.
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