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Stefan-BoltzmannÕs (SB) Law
¥The hotter
the object, the more
radiation emitted.
¥When the
temperature is doubled, the
emitted energy
increases by a factor of 16!
¥Stefan-BoltzmannÕs Law
E= (5.67«10-8 Wm-2K-4 )«T4
E=2«2«2«2=16
4 times
Sun Temp: 6000K
Earth Temp: 300K
Aguado, Fig. 2-7