PURPOSE: To illustrate the relationship between the electrostatic potential and the electric field for a simple case.
DESCRIPTION: The white styrofoam surface represents a potential surface, with the closed lines encircling it being the equipotentials. The electric field vectors at various points on the surface are represented by the vectors sticking out from the surface. These vectors are quantitatively correct for this surface.
REFERENCES: (PIRA unknown.)
EQUIPMENT: Potential surface model with electric field vectors.
SETUP TIME: None.
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