Question: A spherical aluminum shell of inside diameter D = 2 m is evacuated and is used as a radiation test chamber. If the inner surface

A spherical aluminum shell of inside diameter D = 2 m is evacuated and is used as a radiation test chamber. If the inner surface is coated with carbon black and maintained at 600 K, what is the irradiation on a small test surface placed in the chamber? If the inner surface were not coated and maintained at 600 K, what would the irradiation be?

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