What is thauatrope?

Answer 1

A thaumatrope is a simple optical toy that consists of a disk with images on both sides attached to two strings. When the disk is spun rapidly, the images blend together due to persistence of vision, creating the illusion of a single animated image. Popular in the 19th century, it demonstrates the principles of motion and visual perception. Thaumatropes are often considered precursors to modern animation techniques.