ESS5
Prof. Jin-Yi Yu
Apply Stefan-Boltzmann Law To Sun and Earth
q Sun
q     Es = (5.67 x 10-8 W/m2 K4) * (6000K)4 
q          = 73,483,200 W/m2
q
q Earth
q     Ee = (5.67 x 10-8 W/m2 K4) * (300K)4 
q          = 459 W/m2
q
qSun emits about 160,000 times more radiation per unit area than the Earth because Sun’s temperature is about 20 times higher than Earth’s temperature.
q     è 204 = 160,000