Diagrams, graphics with explanation by Dr. Oliver Winn - pioneer in GE's capacitor and battery technologies. Electrolytic and Dielectric Capacitors explained, how its made using polypropylene. electrons enter the top plate creating a negative charge, this repels electrons in the bottom plate, energy is stored in the dielectric via the field. Dr. Winn worked in Fort Edward/Hudson Falls and Columbia, South Carolina GE plants. His work improved the efficiency of capacitors by 3x while reducing production cost. They made their own aluminum foil and plastics.