# Identify and explain concepts given in this diagram. - Science and Technology 1

Identify and explain concepts given in this diagram.

#### Solution

The concept upon which the diagrams are based is the persistence of vision.

Explanation:

1. Persistence of vision is a phenomenon that allows the image formed on the retina to remain imprinted there for 1/16th of a second after the object is removed from the front of the eyes.
2. When cardboard with a cage drawn on one side and a monkey drawn on the other is tied to a thread and twisted and set into rotation, at one point, the observer gets the illusion of the monkey being inside the cage.
3. This happens due to persistence of vision. Before the image of the cage could disappear from the retina, an image of the monkey gets created on the retina giving the observer the impression that the monkey is inside the cage.
Concept: Working of the Human Eye
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