Planck constant

noun \ˈpläŋk-\

Definition of Planck constant

  1. :  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 (g·cm2sec−1)

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Origin and Etymology of planck constant

after Max K. E. L. Planck †1947 German physicist

First Known Use: 1940

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