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

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   Message 739 of 1,217   
   Henry Spencer to David Johnson   
   Re: A question about speed   
   17 Dec 04 07:26:54   
   
   From: henry@spsystems.net   
      
   In article ,   
   David Johnson  wrote:   
   >How is it possible for the speed of light to be independent of the movement   
   >of the observer as Special Relativity Theory claims it is, when the concept   
   >and definition of speed is distance/time? If the distance changes then so   
   >will the speed, by definition.   
      
   Not if the time changes as well.  Which it does.  Different observers will   
   disagree on both the distance the light covers and the time it takes to do   
   so, but the disagreements are not random -- they combine to show light   
   traveling at the same speed (in vacuum) regardless of observer.   
   --   
   "Think outside the box -- the box isn't our friend."    |   Henry Spencer   
                                   -- George Herbert       | henry@spsystems.net   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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