| 单词 | planck's law |
| 释义 | > as lemmasPlanck's law Planck's law n. (also Planck law) (a) a law which states that the energy radiated by a black body per unit time, surface area, and wavelength range is given by Eλ = 2πhc2/ λ5(ehc/λkT − 1) (where h is Planck's constant, c is the speed of light, k is Boltzmann's constant, and T is the temperature in kelvins); (b) a law (deduced by Planck, and from which he derived the above law), forming the basis of quantum theory, which states that electromagnetic energy can only be radiated or absorbed in discrete, indivisible quantities (quanta) whose value E is proportional to the frequency ν of the radiation according to the equation E = hν.extracted from Planckn.< as lemmas |
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