As shown in the sketch, consider the disk
Chapter 13, Problem 13.15(choose chapter or problem)
As shown in the sketch, consider the disk A1locatedcoaxially 1 m distant, but tilted 30?off the normal,from the ring-shaped disk A2. hat is the irradiation on A1due to radiation from A2,which is a diffuse, gray surface with an emissivity of 0.7?
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