Planck's constant

Definitions of Planck's constant
1

n the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second

Synonyms:
h
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

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