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planck radiation law — noun Usage: usually capitalized P Etymology: after Max K. E. L. Planck 1. : a law in physics: radiant energy arising from processes within atoms or molecules is emitted in finite quanta each of which is equal to the product of the radiation… … Useful english dictionary
Planck's radiation law — 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… … Universalium
Planck's radiation law — noun (physics) an equation that expresses the distribution of energy in the radiated spectrum of an ideal black body • Topics: ↑physics, ↑natural philosophy • Hypernyms: ↑law, ↑law of nature * * * Physics. 1. the law that energy associat … Useful english dictionary
planck constant — ˈpläŋk noun Usage: usually capitalized P Etymology: after Max K. E. L. Planck died 1947 German physicist : the constant h in the Planck radiation law now found also in numerous formulas concerned with quantized energy and having a probable value… … Useful english dictionary
planck distribution law — noun Usage: usually capitalized P Etymology: after Max K. E. L. Planck : planck radiation law … Useful english dictionary
Planck constant — Planck s relation redirects here. For the law governing black body radiation, see Planck s law. Values of h Units 6.62606957(29)×10−34 J·s[1] 4.135 … Wikipedia
Planck units — are units of measurement named after the German physicist Max Planck, who first proposed them in 1899. They are an example of natural units, i.e. units of measurement designed so that certain fundamental physical constants are normalized to 1. In … Wikipedia
PLANCK (M.) — L’œuvre que le physicien allemand Planck a accomplie au cours de sa longue vie est fondamentale. Einstein a salué en son auteur «un homme à qui il a été donné de doter le monde d’une grande idée créatrice» et dont la découverte «devint la base de … Encyclopédie Universelle
Planck's constant — plaŋ(k)s , pläŋ(k)s n a constant that gives the unvarying ratio of the energy of a quantum of radiation to its frequency and that has an approximate value of 6.626 × 10 34 joule second symbol h Planck pläŋk Max Karl Ernst Ludwig (1858 1947)… … Medical dictionary
Planck (télescope spatial) — Planck (satellite) Pour les articles homonymes, voir Planck. Planck Sa … Wikipédia en Français
