Chapter 39, Problem 49CP

(a)

To determine

To show that the power per unit area is $\sigma T^4$.

(b)

To determine

To show that Stephan-Boltzmann constant has value $5.67\times {10}^{-8}\text{W}/{\text{m}}^{\text{2}}\cdot {\text{K}}^{\text{4}}$.