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What is persistence of vision?...

What is persistence of vision?

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(i) We see an object because the eye lens creates its image on the retina.
(ii) The image is on the retina as long as the object is in front of us. The image disappears as soon as the object is taken away.
(iii) However, this is not instantaneous and the image remains imprinted on our retina for `(1)/(16)` th of a second after the object is removed.
(iv) The sensation on retina persists for a while. This is called persistence of vision.
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