What is the rate of heat transfer by radiation, with an unclothed person standing in a dark room whose ambient temperature is 22.0°C. The person has a normal skin temperature of 33.0°C and a surface area of 1.50 m². The emissivity of skin is 0.97 in the infrared, where the radiation takes place.

Strategy
We can solve this by using the equation for the rate of radiative heat transfer.