From: rmarsh@xtra.co.nz   
      
   In message , "Micky"   
    wrote:   
      
   >I was reading somewhere that they made the first light antenna. I suppose   
   >that would make it 100's of times quicker than radio signals.?   
   >I know we have 100's of antenna's looking for readio signals from other   
   >planets but do we have any looking for this type of signal already.   
   >What if Aliens only ever used this type of signal or a simular type for   
   >communication, has it ever been tested for.?   
   >If I were an intelligent being surely it would make sense using a technology   
   >that is the speed of light rather than radio.   
      
   The "speed of light" is actually the speed of electromagnetic   
   radiation.  Radio is a form of electromagnetic radiation, and thus   
   travels at the "speed of light".  The only difference is   
   frequency/wavelength.   
      
   >What are your views on the potential of this technology out of interest.?   
   >How usefull is this compared with radio.?   
      
   That's kind of like asking whether you'll see more with red contact   
   lenses or a blue ones.  It depends on what you're looking for, and   
   whether it shows up better in red or blue light.  With ETIs we don't   
   know whether they are more likely to be seen in radio or visible light   
   since, pretty much by definition, they can choose which band (if any)   
   to transmit in.  So either, neither or both might be the technology   
   that finds them if they're there.   
      
   --   
   R.G. "Stumpy" Marsh.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)