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In olden days scientists considered energy to flow continuously and so any amount of fraction is possible. But Planck imagined in a revolutionary way that energy is not coming out or getting absorbed continuously but only in small packets. That packet is named as quanta which has energy given by hv, here h is Planck's constant and v is the frequency of radiation. So 1/2 hv is not possible but n * hv where n is an integer.

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8y ago
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8y ago

Planck's idea was that in certain situations - he specifically analyzed the absorption and emission of light by atoms - energy is absorbed, not continuously, but in "chunks", which are called "quanta".

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11y ago

A single quantum is the minimum amount of

energy that can be lost or gained by an atom.

Therefore, matter loses or gains energy only in

multiples of the quantum.

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13y ago

Quantum energy is related to the frequency of the emitted radiation by the equation Equantum = hv. Quantum is the minimum amount of energy that can be gained or lost by an atom.

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Q: When is energy gained and when is it lost?
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