| 释义 |
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) |