As shown in the sketch, consider the disk A 1 located coaxially 1m distant, but tilted 30 off the normal, from the ring shaped disk Az What is the irradiation on A 1 due to radiation from A 2 , which is a diffuse Gray surface with an emissivity of 0 7 Az T 600 K, ez 0 7 A D, 4 mm 30 Im 2 mm T 400 K...

KNOWN Disk A located coaxially but tilted 30 of the normal from the diffusegray ringshaped disk A2 S ...

As shown in the sketch, consider the disk A 1 located coaxially 1m distant, but tilted 30?

Question:

As shown in the sketch, consider the disk A₁ located coaxially 1m distant, but tilted 30? off the normal, from the ring-shaped disk Az. What is the irradiation on A₁ due to radiation from A₂, which is a diffuse? Gray surface with an emissivity of 0.7