SI
SI
discoversearch

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.
Politics : The Environmentalist Thread
 Public ReplyPrvt ReplyMark as Last ReadFilePrevious 10Next 10PreviousNext  
To: neolib who wrote (18903)12/26/2007 3:18:14 PM
From: longnshort  Read Replies (2) of 36921
 
The average surface temperature of the Earth (which is another blackbody) is 287 Kelvins (14°C). This works out to an energy output of 385 watts per square meter, while we have calculated solar energy input as 353 watts per square meter (which corresponds to a surface temperature of about 281 Kelvins, or 8°C).

Given the closeness of the numbers (±32 watts < 10%), the Earth radiates little or no more energy than it receives from the Sun. In other words, there is no significant energy received at the Earth's surface from any interior source. (Contrast this with Jupiter, which radiates about 10 times the energy it receives from the Sun.)
Report TOU ViolationShare This Post
 Public ReplyPrvt ReplyMark as Last ReadFilePrevious 10Next 10PreviousNext  

HomeMailHotSubjectMarksPeopleMarksKeepersSettings
Terms Of UseContact UsCopyright/IP PolicyPrivacy PolicyAbout UsFAQAdvertise on SI
© 2026 Knight Sac Media.  Data provided by Twelve Data, Alpha Vantage, and CityFALCON News