Question

how the persistence of vision is helpful in making still pictures moving

Answer 1

Animation works by using an optical illusion. By presenting a sequence of still images in quick enough succession, the viewer interprets them as a continuous moving image. This is the same principle that enables live action film making and projection to work. Film theorists often refer to this illusion of movement as the persistence of vision.
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Answer 2

The persistence of vision is helpful in making still pictures move in animation.

• The persistence of vision is also commonly known as the optical illusion.
• An optical illusion is a result of moving pictures.
• It is an optical phenomenon where our eyes continue to perceive a picture even after the light entering our eyes from the picture has ceased.
• The reason behind this is that our brain interprets many still pictures as a single picture.
• This persistence of vision phenomenon is useful in animation where still pictures are made to appear as moving.
• Our brain can process only 12 pictures in a second.
• If more than 12 pictures are shown, an illusion of continuity is created which makes the pictures appear as moving.
• This property is used in making animations.