Demos by PIRA
5B10 Electric Field
5B10.15Electrostatic pinwheel:Van de Graaff makes pinwheel spin.
5B30.40Electric field created by Van de Graff splits ions in flame
5B20 Gauss' Law
5B20.10Faraday's ice pail: Charge induced on the outside of a pail.
5B20.35Faraday cage: blocks signal from portable radio