Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
(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
The principle that lectromagnetic radiation consists of units (quanta or photons).
Switch to new thesaurus
|Noun||1.||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"