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- Path: sparky!uunet!dtix!darwin.sura.net!wupost!uwm.edu!linac!att!ucbvax!cmr.ncsl.nist.gov!roberts
- From: roberts@cmr.ncsl.nist.gov (John Roberts)
- Newsgroups: sci.space
- Subject: Radiative heat loss
- Message-ID: <9207240218.AA06665@cmr.ncsl.nist.gov>
- Date: 24 Jul 92 02:18:40 GMT
- Sender: daemon@ucbvax.BERKELEY.EDU
- Organization: National Institute of Standards and Technology
- formerly National Bureau of Standards
- Lines: 17
-
-
- -From: gary@ke4zv.uucp (Gary Coffman)
- -Subject: Re: If the sun went out-how long life survive?
- -Date: 23 Jul 92 14:47:29 GMT
- -Organization: Gannett Technologies Group
-
- -The latent heat of the atmosphere is roughly 5.3E20 kWh. Radiative
- -loss to maintain current equilibrium is 1.28E14 kW. That would require
- -1.1E3 days to drop the temperature to 0 Kelvin, or 2.12 years to drop the
- -average temperature to the liquification temperature of nitrogen, if
- -radiative loss remained constant. Of course it does not. It varies with
- -the square of the black body temperature.
-
- The *square*? Please double-check.
-
- John Roberts
- roberts@cmr.ncsl.nist.gov
-