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  J1: Electroscopes, Induction
      shape, Shape of Charge, Inside
      outside sphere of charge








  J2: Leyden Jars, Floating foil,
      Static pinwheel, Pith balls







  J3: Electrophoruses, Foam, Wool,
      Rabbit fur, Statics fun stick,
      foil strips





  J4: Glass rods, Aluminum rods,
      Teflon rods, Spark gap




  J5: Wimhurst Machine, Rheostats