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PURPOSE: To demonstrate polarization of light.
DESCRIPTION: The first polaroid polarizes the light. Rotating the front polaroid causes the light to become alternately brighter (polaroids aligned) and dimmer (polaroids crossed), as seen in the two photographs.
SUGGESTIONS:
REFERENCES: (PIRA 6H10.10)
EQUIPMENT: Goose neck lamp, large round polaroids on base, extra square polaroid.
SETUP TIME: None.
