Chapter 12, Problem 12.65P

Consider a large furnace with opaque, diffuse, gray walls at 3000 K having an emissivity of 0.85. A small, diffuse, spectrally selective object in the furnace is maintained at 300 K.

For the specified points on the furnace wall (A) and the object (B), indicate values for $\epsilon ,\alpha ,E,G,andj$ .