Re: Earth's Temperature

In article <eu4aku$559$1@xxxxxxxxxxxxxxxx>, Brian Tung <brian@xxxxxxx> wrote:

Havriliak wrote:
Some one tried to convince me that the temperature of the earth is due
to radioactive decay in the earth. Any comments

Part of it is. The rest is latent heat from the Earth's formation and
heating from the Sun.

The heating from the Sun is negligible here - it only heats up the
very uppermost layers of the Earth - the atmosphere, the biosphere,
and a few feet into the ground. And the incoming heat from the Sun
is balanced by the Earth's radiation into space - it doesn't at all
contribute to heat most of the Earth, i.e. the Earth's interior.
The net balance of the heat from the Sun and the heat radiated away
by the Earth is rather a cooling than a heating, since the interior
of the Earth is hotter than the surface of the Earth.

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e-mail: pausch at stockholm dot bostream dot se
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