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Global Warming/Strange Weather Patterns

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Author Topic:   Global Warming/Strange Weather Patterns
JonF
Member (Idle past 469 days)
Posts: 6174
Joined: 06-23-2003

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Message 70 of 77 (190756)
03-09-2005 10:09 AM 		Reply to: Message 67 by contracycle
03-08-2005 5:41 AM

Re: Earth Loses More Heat than it Gains?
As I understand it, the only non-stellar body in the solar system to generate its own heat is Jupiter, which is about 30 degrees hotter than it would be due to infalling radiation.
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Definitely not. Jupiter may be the only body generating energy by fusion in its core; but the Earth generates a significant portion of its heat by radioacive decay and some by gravitational segregation and the like.
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JonF
Member (Idle past 469 days)
Posts: 6174
Joined: 06-23-2003

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Message 72 of 77 (191110)
03-11-2005 7:41 PM 		Reply to: Message 71 by TheLiteralist
03-09-2005 11:55 AM

Re: rotational motions too
Rotational motion in and of itself does not generate heat. If the rotating body is rubbing against something, that will cause frictional heating. If the rotating body is partly liquid and/or gas, the acceleration involved in rotation can cause convection and turbulence which dissipates energy as heat. There may be other possibilities; but a rigid object rotating in a vacuum generates no heat.
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JonF
Member (Idle past 469 days)
Posts: 6174
Joined: 06-23-2003

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Message 74 of 77 (191116)
03-11-2005 8:35 PM 		Reply to: Message 73 by crashfrog
03-11-2005 7:49 PM

As the Earth spins and rotates in the presence of the Sun's magnetic field, wouldn't that generate heat?
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Yup, as long as the Earth has a magnetic field and/or a conductive portion, as it does. But that's IMHO not inherent in the rotation, either.
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