PURPOSE: Demonstrates how a light ray bends when it enters a different medium at an oblique angle.
DESCRIPTION: The ray from the laser refracts when entering the surface of the cloudy water. The path of the laser beam in the water is rendered more visible by adding a touch of powdered creamer to the water.
REFERENCES: (PIRA 6A42.20)
EQUIPMENT: Laser with plastic tank containing water with powdered creamer.
SETUP TIME: 5 min.
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