Quantum Theory 2
Quantum Theory 2 : The amount of energy which is radiated from a hot body or a light source does not come in a steady flow, but in `drops' or discrete units of energy called `quanta'. These quanta are of different sizes according to the frequency of the radiation, e. g. a quantum of red light is les than a quantum of blue light. The theory is developed from Planck's law. The quantum of electro-magnetic radiation is the photon. The quantum of energy associated with nuclear energy the meson. The theory applies to all forms of physical energy
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