Persistence of vision
Description: Persistence of vision is the phenomenon of the eye by which an afterimage is thought to persist for approximately one twenty-fifth of a second on the retina. This property of retina is utilized in making motion picture. Here is a gadget that exhibits the concept of motion picture, where one side of the frame has a picture of a bird and other side has a bird cage, when this frame is rotated in high speed, we will visualize a picture as if the bird is inside the cage.
Recommended Class: 6th, 7th, 8th
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