Wednesday, November 11, 2009

Optical illusions/ Optical Toys

Me and my class have started a new unit, optical illusions! One simple yet very effective illusion was called the Thaumatrope by John Ayrton paris, 1825. The thaumatrope means "turning marvel" or "wonder turner," this toy became very popular. Thaumatropes were the first of many optical toys, they continued to provide animated entertainment until the development of Animations.

It's a small disc, held on opposite sides by pieces of string. you need to draw a picture on each side of the disc, when the disc is spun the two pictures appear to become together. If you wanna spin the disc, one string is held in one hand, and the disc is turned to wind the string. Then, both strings are held, and the disc is allowed to turn.



This is a example of the Thaumatrope, this one has the illusion of a flower in a vase





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