How is constant of planck important?

Planck's constant describes the ratio between the energy of an electromagnetic wave and the frequency of that wave.

Because mothers love that sort of thing.

Planck's Constant defines a minimum momentum moment h=mvw where w is wavelength. Planck's Constant is the product of electric charge Q and magnetic charge W (Weber voltsecond). The Planck energy E=...

Energy/frequency or energy*wavelength/speed of light.

The reduced Planck constant simplifies the mathematics found in quantum physics calculations by adding a 2pi term into it. Instead of worrying about that 2pi constant, formulas using the reduced...