Difference between periscope and kaleidoscope ?

Dear student.

Periscope is an apparatus consisting of a tube attached to a set of mirrors or prisms, by which an observer (typically in a submerged submarine or behind a high obstacle) can see things that are otherwise out of sight.

A kaleidoscope is a cylinder with several mirrors containing loose, colored objects such as beads or bits of glass. It works on the principle of multiple reflection, where several mirrors are placed at an angle to one another. When a person looks into one end, light entering the other creates a colorful pattern.  

Regards.

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A periscope uses a system of mirrors to view events above your head or behind your back.

A kaleidoscope is a toy which uses a system of mirrors to display coloured chips in a variety of patterns (usually a hexagon).
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