Thaumatrope

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fish bowl

 

Watch how to create your own simple thaumatrope here.

A thaumatrope is an optical toy that was popular in the 19th century. A disk with a picture on each side is attached to two pieces of string or rubber band. When the strings are twirled quickly between the fingers the two pictures appear to blend into one due to the persistence of vision.

Examples of common thaumatrope pictures include a bare tree on one side of the disk, and its leaves on the other, or a bird on one side and a cage on the other. Many classic thaumatropes also included riddles or short poems, with one line on each side.

Thaumatropes can provide an illusion of motion with the two sides of the disc each depicting a different phase of the motion.

Thaumatropes are often seen as important antecedents of motion pictures and in particular of animation.