Planck's constant

name

Definitions

Proper Noun
  1. 1
    the constant of proportionality (symbol ℎ), relating the energy and frequency of a photon (6.626×10⁻³⁴ joule-second); also related to the indeterminacy limit in the Heisenberg uncertainty principle; the quantum of action
Noun
  1. 1
    the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second wordnet

Etymology

Named for Max Planck (1858–1947), German theoretical physicist, who discovered it in 1900.

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