Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun planck's_constant

1 sense of planck's constant

Sense 1
Planck's constant, h -- (the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second)
       => factor of proportionality, constant of proportionality -- (the constant value of the ratio of two proportional quantities x and y; usually written y = kx, where k is the factor of proportionality)