XPost: sci.space.policy   
   From: kaido_kert@hotmail.com   
      
   "Zoltan Szakaly"  wrote in message   
   news:58866faa.0401251618.41995408@posting.google.com...   
   >   
   > You guys can more efficiently transmit energy using microwave   
   > antennas. You can get 60% efficiency by radiating microwaves onto an   
   > antenna that is equipped with microwave diodes. This would be the   
   > preferred method of transmitting power.   
   Japanese have done most of the latest research work in WPT, and IIRC they   
   have achieved efficiencies in excess of 80%.   
   ( sites to check:   
   http://global.mitsubishielectric.com/bu/space/topics/solar/sol01_b.html  and   
   http://www.wronkiewicz.net/ssp/)   
      
   But, wrt solar cells, check out this   
   http://www.spacedaily.com/news/solarcell-02m.html   
   "An Unexpected Discovery Could Yield A Full Spectrum Solar Cell"   
    "The serendipitous discovery means that a single system of alloys   
   incorporating indium, gallium, and nitrogen can convert virtually the full   
   spectrum of sunlight -- from the near infrared to the far ultraviolet -- to   
   electrical current."   
   "great many layers with only small differences in their band gaps could be   
   stacked to approach the maximum theoretical efficiency of better than 70   
   percent."   
      
   -kert   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)