Planck's law

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Planck's law a law, forming the basis of quantum theory, announced by the German theoretical physicist Max Planck (1858–1947). Planck's law states that electromagnetic radiation from heated bodies is not emitted as a continuous flow but is made up of discrete units or quanta of energy, the size of which involve a fundamental physical constant (Planck's constant), equal to the energy of a quantum of electromagnetic radiation divided by its frequency, with a value of 6.626 × 10−34 joules.

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