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A science question

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Author Topic:   A science question
Coragyps
Member (Idle past 764 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002

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Message 6 of 148 (180775)
01-26-2005 10:13 AM 		Reply to: Message 1 by Phat
01-26-2005 7:03 AM

As I understand it, about half the heat comes from radioactive decay - potassium-40 and uranium, mostly. The other half comes from gravitational potential energy being turned to heat as heavier stuff settles toward the middle, and from the heat of crystallization released as the liquid of the outer core crystallizes onto the inner core.
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I don't know when it'll be down to lukewarm, and I'm not waiting around to find out...
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Coragyps
Member (Idle past 764 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002

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Message 14 of 148 (180826)
01-26-2005 12:45 PM 		Reply to: Message 13 by Silent H
01-26-2005 12:31 PM

We lose a good bit of infrared radiation to space - "light" after a fashion, just not visible. Losses of atmosphere are surely tiny in comparison.
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Coragyps
Member (Idle past 764 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002

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Message 18 of 148 (180860)
01-26-2005 3:30 PM 		Reply to: Message 17 by Silent H
01-26-2005 3:18 PM

Holmes, here's one that gets close to answering you:
http://cimss.ssec.wisc.edu/wxwise/homerbe.html
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BTW, your avatar is frightening.
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