Planck's law
Noun
Meaning
(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
Source: WordNetHypernyms
Examples
If the polylogarithm function and the Riemann zeta function are not available for calculation, there are a number of ways to do this integration; a simple one is given in the appendix of the Planck's law article.
It was an important ingredient for the progressively improved measurements that led to the discovery of Planck's law.
Quantitatively, this can be expressed as Planck's law : ( N·m −2 or Pa ) for a radiation energy density ( J·m −3 ).
The radiation emitted covers the entire electromagnetic spectrum and the intensity of the radiation (power/unit-area) at a given frequency is described by Planck's law of radiation.
This correction is needed because very hot stars radiate mostly ultraviolet radiation, whereas very cool stars radiate mostly infrared radiation (see Planck's law ).