Definitions for "Planck's constant"
a fundamental constant of the universe, appearing in quantum mechanics, with the value 6.626×10-34 J-s.
6.626×10-34 Joule-seconds. It is used to find the energy of a single photon in a wave of light. See also: Joule, photon, quantum, Advanced Topics
A proportionality constant that relates the energy carried by a photon to its frequency. Planck's constant has a value of 6.6262 × 10-34 J s.
Keywords:  erg
h=6.626 x 10-27 erg•s