Kittel, Ch4-5. Surface temperature of the Earth. Calculate the temperature of the surface of the Earth on the assumption that as a black body in thermal equilibrium it reradiates as much thermal radiation as it receives from the Sun. Assume also that the surface of the Earth is at a constant temperature over the day-night cycle. Use T₂=5800K; R₂ = 7x10⁰ cm; and the Earth-Sun distance of 1.5x10¹³ cm.

Kittel, Ch4-5. Surface temperature of the Earth. Calculate the temperature of the surface of the Earth on the assumption that as a black body in thermal equilibrium it reradiates as much thermal radiation as it receives from the Sun. Assume also that the surface of the Earth is at a constant temperature over the day-night cycle. Use T₂=5800K; R₂ = 7x10⁰ cm; and the Earth-Sun distance of 1.5x10¹³ cm.