Apply Stefan-Boltzmann Law To Sun and Earth
		q  Sun      Es = (5.67 x 10-8 W/m2 K4) * (6000K)4           = 73,483,200 W/m2 q  Earth      Ee = (5.67 x 10-8 W/m2 K4) * (300K)4           = 459 W/m2 q Sun 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.      è 204 = 160,000