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Question
Define the following term:
Adaptation
Solution
There are two types of human eye adaptation.
- Light adaptation: When a person with dark-adapted eyes moves to a brightly lit area, as in coming out of a cinema hall after the noon show, he experiences a dazzling effect for a short period. After a few seconds, he comes back to normal viewing through light adaptation.
- Dark adaptation: When you pass from a brightly lit area to a dark room (such as a cinema hall), you experience difficulty seeing objects for a short while. Slowly, your vision has improved. This improvement is called a dark adaptation.
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Write an Explanation.
Persistence of vision
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The figures (A) and (B) given below are showing some kind of adjustment. Study the figures and answer the questions that follow.
| A |  |
 |
B |
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