On Saturday, June 17, 2017 at 11:16:10 AM UTC-4, Phil Hobbs wrote:   
   > On 06/17/2017 10:48 AM, Sегgi о wrote:   
   > >    
   > >> The Parker probe will use a refrigeration system to lower the   
   > >> temperature of the components of the spacecraft from 1,400 C to room   
   > >> temperature. This is about the same temperature drop as the   
   > >> temperature drop from the Sun’s surface to the maximum temperature of   
   > >> our high temperature ceramics. So it should be possible to do this   
   > >> temperature drop on the surface of the Sun using our highest   
   > >> temperature ceramics.   
   > >>   
   > >    
   > > the major constraint is; the limited amount of heat can the probe get   
   > > rid of by radiate it out into cold space on the back side.  This is only   
   > > a few hundred watts. (do the calculation)   
   > > [hint http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/stefan.html ]   
   > >    
   > > this means the solar shield *must be* a wideband optical and heat reflector   
   > >    
   >    
   > And of course that the Sun does not have a solid surface.   
   >    
   > Of course you could visit it at night. ;)   
   >    
   >    
   > Cheers   
   >    
   > Phil Hobbs   
      
   Did you ever read the sci-fi novel "Sundiver" by D. Brin?     
   A refrigerator, runs a laser (High power!) that dumps the heat    
   into the sun.. or into space.     
      
   George H.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)