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How is the phenomenon of reflection used in making a kaleidoscope. What are the applications of a kaleidoscope?
Kaleidoscope is a cylinder with three mirrors containing loose, coloured objects such as beads or pebbles and bits of glass. As the viewer looks
into one end, light entering the other end, creates a colourful pattern due to reflection.
It works on the principle of multiple reflection, where several mirrors are placed at an angle (usually 60°) to one another. Typically, these are three
rectangular mirrors set at 60° to each other so that they form an equilateral triangle.
The 60° angle creates seven duplicate images of the objects, 5 at 60° and 2 at 90°. As the tube is rotated, the tumbling of the coloured objects
present varying colours and patterns.
Its applications are given below:
(i) It is used for decoration purposes, toys, etc.
(ii)Kaleidoscope is also useful for designers and artists to get idea for new patterns to design wallpapers, jwellery and fabrics.