6A42.20 Refraction Tank

Move a laser beam around a tank of water containing some milk or non-dairy creamer. Demonstrate refraction of beam entering water and total internal reflection of beam leaving water.

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Picture: Need new picture

 

Setup Requirements: A fishtank filled with water is used now.  Allow time to fill. Add small amount of non dairy creamer. "Canned Fog" available to make beam visible in air.

 

Equations: Snell's Law  n(1)sin(a) = n(2) sin(b)

Safety Issues: Laser, Heavy tank filled with water