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Thaumatrope(medicine)
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medicine(encyclopedia)

Thaumatrope (medicine)


thaumatrope
<optics> An optical instrument or toy for showing the presistence of an impression upon the eyes after the luminous object is withdrawn.

It consists of a card having on its opposite faces figures of two different objects, or halves of the same object, as a bird and a cage, which, when the card is whirled rapidlz round a diameter by the strings that hold it, appear to the eye combined in a single picture, as of a bird in its cage.

Origin: Gr. A wonder + to turn.

Source: Websters Dictionary