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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, [[Reflection|reflecting]] off the mirrors. Typically there are two rectangular lengthwise mirrors. Setting of the mirrors at 45 degree (angle) creates eight duplicate images of the objects, six at 60°, and four at 90°. As the tube is rotated, the tumbling of the [[color]]ed objects presents the viewer with varying colors and [[pattern]]s. Any arbitrary pattern of objects shows up as a [[beautiful]] [[symmetry|symmetric]] pattern because of the reflections in the mirrors. A two-mirror model yields a pattern or patterns isolated against a solid black background, while a three-mirror (closed triangle) model yields a pattern that fills the entire field.

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, [[Reflection|reflecting]] off the mirrors. Typically there are two rectangular lengthwise mirrors. Setting of the mirrors at 45 degree (angle) creates eight duplicate images of the objects, six at 60°, and four at 90°. As the tube is rotated, the tumbling of the [[color]]ed objects presents the viewer with varying colors and [[pattern]]s. Any arbitrary pattern of objects shows up as a [[beautiful]] [[symmetry|symmetric]] pattern because of the reflections in the mirrors. A two-mirror model yields a pattern or patterns isolated against a solid black background, while a three-mirror (closed triangle) model yields a pattern that fills the entire field.