What is PLANCK'S LAW?

Basis of quantum theory, that the energy of electromagnetic waves is confined in indivisible packets or quanta, each of which has to be radiated or absorbed as a whole, the magnitude being proportional to frequency. If E is the value of the quantum expressed in energy units and v is the frequency of the radiation, then E=hv, where h is known as Planck's constant and has dimensions of energy x time, ie action, and is 6-626 x 10~34 J s. See photon and panel on Quantum theory.


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