planck constant

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 of 6.626×10-27 erg second (gCm2sec-1)

Useful english dictionary. 2012.

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  • Planck's constant — Physics. the fundamental constant of quantum mechanics, expressing the ratio of the energy of one quantum of radiation to the frequency of the radiation and approximately equal to 6.624 × 10 27 erg seconds. Symbol: h Also, Planck constant. [1905… …   Universalium

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