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.
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.
Demonstration of a Van de Graaff generator used to charge confetti, causing it to jump in the air.
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.
Using a charged rubber rod and two metal spheres to create a dipole. An electroscope is used to show that a dipole has been created.
Torque on a dipole in an electric field causes it to rotate and align with the field. Demonstration by creating a dipole and placing it in the electric field of a large Van de Graaff generator.
Demonstration of using grass seeds in oil to probe an electric field, with examples of the field for a dipole and for two charges of the same polarity.
Using a balloon to demonstrate the electric field between a Van de Graaff generator and an oppositely charged Professor Walter Lewin.
Using a large Van de Graaff generator and a flourescent tube to show that there is a very large potential difference in a strong electric field.
Electrocardiograms, defibrillators, and pacemakers are explained, including a demonstration of an electrocardiogram on a student.