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What is absorptivity of a body?
The absorptive power of a body (or a surface) is defined as the ratio of energy absorbed over time (or over a certain time) to the radiant energy incident on it at the same time. It is a measurement of how much heat a thing absorbs.
The absorptive power of a body (or a surface) is defined as the ratio of energy absorbed over time (or over a certain time) to the radiant energy incident on it at the same time. It is a measurement of how much heat a thing absorbs.