Electrostatic Friction Rod Kit, includes: -3 fabric cloths (wool, cotton, silk) -3 rods (glass, ebonite, lucite), provides the necessary tools to free both positive and negative charges for exploration into electrostatic forces, 0.4 lbs, 9.8x6.0x1.8in
Neodymium disk magnet, Grade 35, Diameter: 0.5 inch, Thickness: 0.75 inches, Weight: 0.007 Lbs, are made from the most powerful magnetic material in the world, are composed of neodymium, iron, boron and a few transition met