Question

) A 3-mm-thick glass window transmits 83 percent of the radiation betweenA -0.3 and 3.0 μm and is essentially opaque for radiation at other wavelengths. Determine the rate of radiation transmitted through a 3-m X 3-m glass window from blackbody sources at (a) 5800 K and (b) 1000 K ) A small circular surface of area A-2cm2 located at the center of a 2-m-diameter sphere emits radiation as a blackbody at T-1000 K. Determine the rate at which radiation energy is streaming through a D2 = 1-cm-diameter hole located (a) on top of the sphere directly above A and (b) on the side of sphere such that the line that connects the centers of A and Az makes 45* with surface Ai

Answer 1

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