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A kaleidoscope is a tube of mirrors containing loose colored beads, pebbles, or other small colored objects. The viewer looks in one end and light enters the other end, reflecting off the mirrors. Typically, there are two rectangular lengthwise mirrors. Setting of the mirrors at 45′ creates eight duplicate images of the objects, six at 60′, and four at 90′. As the tube is rotated, the tumbling of the colored objects presents the viewer with varying colors and patterns. Any arbitrary pattern of objects shows up as a beautiful symmetric pattern because of the reflections in the mirrors. A two-mirror model yields one or more patterns isolated against a solid black background, while a three-mirror (closed triangle) model yields a pattern that fills the entire field.

Koutsogianni Katerina