MELODY's Big Periscope with Kaleidoscope Combo Pack 1 Set.  (Multicolor)

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. Periscope is an instrument for observation from a concealed postion. In simplest form it consists of a tube with mirrors at each end set parallel to each other at 45-degree angle. Tanks, sub marines use periscope extensively. They enable drivers or tank commanders to inspect their situation without leaving the safety of tank or marine. Its a unique and fascinating spying toy which also teaches scientific principles as well as hours of fun. It channelizes energy of students in a focused direction.