Semicircle Refraction Dish for Optics Demonstration are excellent for comparing refraction rates of various liquids. When filled with water, the transparent tanks become perfect cylindrical lenses.
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Filled with water or other liquids, these semicircular, transparent tanks become perfect cylindrical lenses. Use them for a variety of classic optical experiments. Excellent for comparing the refraction rates of various liquids. The tanks are made of clear plastic and have a radius of 4¾" and a depth of 1".