Video Index
Please make sure you play the Video before clicking the links below.
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Making a Dipole
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.
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Dipoles in Electric Fields
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.
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Grass Seeds
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.
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Electric Field Between Van de Graaff and Walter Lewin
Using a balloon to demonstrate the electric field between a Van de Graaff generator and an oppositely charged Professor Walter Lewin.