Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Planck's lawSee Planck constant.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
Planck's law[′pläŋks ‚lȯ]
A fundamental law of quantum theory stating that energy associated with electromagnetic radiation is emitted or absorbed in discrete amounts which are proportional to the frequency of radiation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.