Planck's constant
English
Etymology
Named for Max Planck (1858–1947), German theoretical physicist, who discovered it in 1900.
Noun
- (physics) the constant of proportionality (symbol h), relating the energy and frequency of a photon (6.626 × 10−34 joule-seconds); also related to the indeterminacy limit in the Heisenberg uncertainty principle; the quantum of action
Translations
constant