Question: Irradiation on a semi - transparent medium is at a rate of 9 1 0 W / m 2 . If 1 6 0 W

Irradiation on a semi-transparent medium is at a rate of 910 W/m2. If 160 W/m2 of the irradiation is reflected from the medium and 130 W/m2 is transmitted through the medium,
Determine the absorptivity of the medium.
The absorptivity of the medium is .

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