If we assume that a human radiates like a black body, calculate the luminosity in watts, then compare it to the daily energy a human gets from eating. (The area of a human A=1.3 m2)
The Attempt at a Solution
The temperature of a human is 310K so L=AσT4 = 1.4*5.6*10-8*(310)4=733 watts and the average energy of a human gets from eating is about 3000 calories=12500 joules.
So in one day a human seems to radiate too much energy compared to the daily energy he gets. What is going on?