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   sci.space.science      Space and planetary science and related      1,217 messages   

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   Message 163 of 1,217   
   Henry Spencer to Keith F. Lynch   
   Re: earth-sun distance and heat involved   
   02 Oct 03 03:24:14   
   
   From: henry@spsystems.net   
      
   In article ,   
   Keith F. Lynch  wrote:   
   >Also because 4.8 million out of 150 million is really not much   
   >difference.  It makes a difference of about 3% in light intensity...   
      
   Remember, it's a square law:  a 3% difference in distance turns into about   
   a 7% difference in light.   
      
   (However, Keith is correct to point out that the fourth-root law for   
   temperature greatly reduces the impact of this.)   
   --   
   MOST launched 1015 EDT 30 June, separated 1046,         | Henry Spencer   
   first ground-station pass 1651, all nominal!            | henry@spsystems.net   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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