what is coefficient emission or emissivity??
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Emissivity is defined as the ratio of the energy radiated by an object at a given temperature to the energy emitted by a perfect radiator, or 'black body' at the same temperature.
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Emissivity is defined as the ratio of the energy radiated by an object at a given temperature to the energy emitted by a perfect radiator, or 'black body' at the same temperature.
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