From: rgregoryclark@yahoo.com   
      
   On Thursday, January 7, 2021 at 8:36:46 PM UTC-5, salsa.t...@gmail.com wrote:   
   > Hello, new here and all that jazz. I'm working on a space opera setting and   
   one of the things I'm curious about are the materials that could be used to   
   make a radiator. I have an idea on how warship radiators operate, but I'm   
   trying not to break more    
   rules than I need to.    
   >    
   > Basically, the radiators are flexible and can be rolled up into armored   
   compartments to protect them from hostile fire. When deployed, ribbing in the   
   panels stiffens to keep them from flopping about. Are there any materials that   
   can be rigid in one set    
   of circumstances, but flexible in another? Is this even plausible?   
   ============================================================================   
      
    Look up:   
      
   https://en.wikipedia.org/wiki/Magnetorheological_fluid   
      
    and:   
      
   https://en.wikipedia.org/wiki/Ferrofluid   
      
    Some cool videos also on the net describing their properties.   
      
     Robert Clark   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)