InterviewSolution
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Answers:eena entered a dimly lit room and coulver, after a while, she was able to seecis? |
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Answer» The visual cells in the eyes called rods and cones convert light energy into electrical impulses. In light conditions certain chemical reactions see to that the sensitivity of the rods (which are responsible for vision in dim conditions) is reduced. Also the pupils (which regulate the amount of light entering our eye, analogous to the aperture in cameras) will be constricted. When we enter a dark room though the pupil will dilate in a couple of moments. But it takes some time for chemical reactions to occur in the eye (called dark adaptation) in order to enhance the sensitivity of the rods. Hence when we come from light to dark (also vice versa) we will be unable to see things for a couple of moments. |
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