From: tjroberts137@sbcglobal.net   
      
   On 11/20/19 4:16 PM, Thomas Koenig wrote:   
   > [...]   
      
   This is surely related to the triboelectric effect, which generates   
   static electricity when different solids are rubbed together. Searching   
   for that might expand your literature.   
      
   Tom Roberts   
      
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