Planck's constant 1
noundomain: quantity
Princeton WordNet [ver.3.1]
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EnglishDefinition
the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second
Hypernym
the constant value of the ratio of two proportional quantities x and y; usually written y = kx, where k is the factor of proportionality
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