Now look through the neck into the mirrors. The glitter will be reflected to form the classic colorful kaleidoscope pattern. Turn the bottom piece slightly to move the glitter and see the pattern move with it. Try looking at a light source to change and brighten the image. For another effect, leave the glitter out of the bottom piece and observe the image formed by the cells themselves, which act as lenses. Or, use the bottom of a colored bottle for a different effect.
How to Make a Kaleidoscope
By Mary Bellis, About.com Guide
The glitter should be able to move around loose in the bottom but not fall out. Slide the bottom piece into the bottle until it stays in place and is able to rotate within the bottle. See Photo Above
The Invention of the Kaleidoscope
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