| Blackbody
Radiation |
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| • | An
object that is a perfect absorber and a |
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| perfect
emitter, is called a blackbody. |
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| • | If
the earth behaves a blackbody with no |
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| atmosphere,
then radiative equilibrium will |
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| be
attained at –18C or 0F. |
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| • | The
correct average temperature is 15C or |
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| 59F. Why? |
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