A thaumatrope is an optical toy that was introduced in 1825. When the strings attached to the small illustrated disk are twirled quickly between the fingers, the depicted elements on either side of the disk appear to blend into one image.
A thaumatrope is an optical toy that was introduced in 1825. When the strings attached to the small illustrated disk are twirled quickly between the fingers, the depicted elements on either side of the disk appear to blend into one image.
Source: Wikipedia "Thaumatrope" · CC BY-SA 4.0
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