planck's constant

Noun
  1. The constant of proportionality relating the energy of a photon to its frequency;
    Approximately 6.626 x 10^-34 joule-second (synset 113612326)
    is a type of: constant of proportionality, factor 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
    same as: h

Other Searches