Question 25.AP.1: Vision of the Invisible Man A classic science fiction story,...

Vision of the Invisible Man

A classic science fiction story, The Invisible Man by H. G. Wells, tells of a man who becomes invisible by changing the index of refraction of his body to that of air. Students who know how the eye works have criticized this story; they claim that the invisible man would be unable to see. On the basis of your knowledge of the eye, would he be able to see?

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He wouldn’t be able to see. For the eye to see an object, incoming light must be refracted at the cornea and lens to form an image on the retina. If the cornea and lens have the same index of refraction as air, refraction can’t occur and an image wouldn’t be formed.

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