Page 125 - Genius Kidz Prudence Learning Sc-8

KALEIDOSCOPE

Kaleidoscope was invented in 1817 by Scottish
inventor Sir David Brewster. The word
kaleidoscope is derived from the German
phrase meaning “to see the beautiful”.

It is a long cylindrical tube with mirrors
containing loose coloured objects such as
beads, pebbles, bits of coloured glasses, etc. A
Kaleidoscope operates on the principle of
multiple reflection, where several mirrors are
placed at an angle to one another, usually 60°.

The 60° angle creates several duplicate images
of the objects, five at 60. As the tube is rotated,
the tumbling of the coloured objects presents
varying colours and patterns. Arbitrary
patterns show up as a beautiful symmetrical Kaleidoscope
pattern created by the reflections.

Activity 2

Explore and find out the uses of a Kaleidoscope and also try and design a Kaleidoscope. Give a brief description of
your design.
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Image of object persists on the retina of the eye for 1/16th of a second.

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