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Earth gets no energy from the sun

Name: Anonymous 2006-07-12 12:26

It's a common misconception, but we don't.  Think about it.  If we were constantly getting net energy from the sun, three billion plus years of it would have more or less melted the surface of the planet.  All heat energy we get is released on the dark side of the earth as higher-entropy IR radiation.  The earth's distance from the sun (amongst other things) defines the equilibrium tempurature.  But it's the low-entropy yellow light that we get from the sun that makes life possible.  All forms of life take higher-entropy intake and put it into a lower entropy state.  The result, however, is that we have to simultaniously output MORE entropy than we reduce.  Ultimately, this is via the IR light that leaves us at night.

Name: Anonymous 2006-07-15 20:34

Mabybe the statement is based on how much energy we get compared to how mjuch is given out.
physics tells us that heat is radiated out from then sun through the vacum of space where it hits out atmosphere heating it.

how much of the energy the sun gives out do we get? who knows, but i heard an estimate of 3 billionths.

which is next to nothing in almost the way .9999=1
so you could say the earth gets no energy from the sun.

we know its not true but it could just be a technicality, in the same way .9999=1 is true because of a technicality

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