Meaning of PLANCK CONSTANT in English

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 (gCm 2 sec -1 )

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.