Question

Define persistence of vision. ​

Answer 1

Answer:

The image of an object seen by our eyes persists {or remains} on the retina for about 1/16th of a second even after the object has

disappeared from our view.

The ability of an eye to continue to see the image of an object for a very short duration even after the object has disappeared from view, is called persistence of vision.

Answer 2

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• It is the continuance of sensation of eye for some time.

• The image of any object seen persists on the retina for 16 /1 seconds.

• If still images of a moving object are flashed on the eye at a rate faster than 16 per second, then the eye perceive this object as moving.

• In movies, still pictures are made to move across the eye usually at the rate of 24 pictures per second. So, we see a moving picture.

Examples:

• Due to this persistence of vision, when we see many still images in a sequence, they give the illusion of moving images.

• Movies and animation are made by exploiting this property of the human eye.