OPTICS - GEOMETRICAL OPTICS - REFRACTIVE INDEX	NC State University Faculty Access
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Description: Show how a glass cat seems to disappear when immersed in a liquid of the same index of refraction of the glass. The demo room uses Wesson vegetable oil because of its close index to Pyrex. NOTE: This demo uses pyrex glass items until the "cat" can be mended (as he's a bit broken now...) Purchased/Built: built Setup Time: 10 min Quant. in Demo Room: 1 Demo References The Video Encyclopedia of Physics Demonstrations Disc 22-10 Place an eyedropper in a liquid with an index of refraction matched to the glass.
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