Planck's law

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Planck's law

n
(General Physics) physics a law that is the basis of quantum theory, which states that the energy of electromagnetic radiation is confined to indivisible packets (quanta), each of which has an energy equal to the product of the Planck constant and the frequency of the radiation
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Planck's law

The principle that lectromagnetic radiation consists of units (quanta or photons).
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Planck's law - (physics) the basis of quantum theory; the energy of electromagnetic waves is contained in indivisible quanta that have to be radiated or absorbed as a whole; the magnitude is proportional to frequency where the constant of proportionality is given by Planck's constant
law of nature, law - a generalization that describes recurring facts or events in nature; "the laws of thermodynamics"
natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"
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References in periodicals archive ?
Firstly we introduce Planck's law of black body radiation for two space dimensions to calculate the spectral luminosity density of an ideal black body as follows (8[[pi].sup.2] = [??] = G = [k.sub.B] = c = 1) [75-77]:
The total time necessary to fill the space with black radiation is likely to be short because of the extremely short transmission time [delta]t and the limited number of reflections necessary to achieve near-perfect black body radiation in most normal situations.
SafEye has very high immunity to false alarms caused by partial blockage, extreme weather conditions (fog, rain, snow) and direct or reflected sunlight, flame and other black body radiation sources.