This preview shows pages 1–3. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: • Short wavelengths-->Higher frequency-->More Energy-->Higher Temperature • Total energy flux of any blackbody: Ftot = 6T^4 (T=temp, 6= 5.67 * 10^-8) • SUN Ftot = 6.0 * 10^7 w/m2 (watts per meter squared) • EARTH Ftot = 1370 w/m2 (watts per meter squared) INVERSE SQUARE LAW • So (Ro/R)^2 = S (So=sun's energy flux, Ro=sun's radius, S=total energy emitted by sun) • The farther from the sun, the less energy received • Triple the distance from the sun --> 1/9 the original energy • Double the distance from the sun --> 1/4 the original energy ENERGY BALANCE OFF EARTH • Ein = Eout • S/4 (1-A) = ? 6(Te^4) (S=1370, A=.3, 6=5.67*10^-8, Te=-18 C) • shorter wavelength->higher frequency->more energy->higher temperature • HOT BODY RADIATES MORE ENERGY AT SHORTER WAVELENGTHS...
View Full Document
This note was uploaded on 02/21/2008 for the course EARTH 002 taught by Professor Eigenbrode during the Spring '99 term at Pennsylvania State University, University Park.
- Spring '99