Video Index
Please make sure you play the Video before clicking the links below.
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Polarization
Charging a glass rod with silk, then inducing a polarization of charge in a conductor. Properties of conductors. Demonstration: Using balloons to demonstrate induction of positive and negative charges with conductors and non-conductors.
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Charging Through Friction
Friction creates a charge when combing your hair, touching a doorknob after walking on a carpet, using saran wrap and cellophane. Experiment: Beating a student with cat fur to create a charge, then discharging by touching a neon discharge tube.
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Van de Graaff Generator
Demonstration of a Van de Graaff generator used to charge confetti, causing it to jump in the air.
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Human Electroscope
Definition of electroscope as a device for measuring charge. Professor Lewin demonstrates a human electroscope by charging himself with the Van de Graaff and holding pieces of tinsel.