PURPOSE: To illustrate the electric field for various geometries.
DESCRIPTION: Samples are mounted in a holder on an overhead projector and charged using a piezoelectric device. The particles in the solution become polarized and align along the electric field lines. Sample geometries include oppositely charg ed points, plates and coaxial circles.
SUGGESTIONS:
REFERENCES: See Demonstration Reference File.
EQUIPMENT: Geometry samples with bath containing polarizing particles, piezoelectric charger, and overhead projector.
SETUP TIME: 5 min.
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