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College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000

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BuyFindarrow_forward

College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000
Textbook Problem

When laser light is shone into a relaxed normal−vision eye to repair a tear by spot-welding the retina to the back of the eye. The rays entering the eye must be parallel. Why?

To determine

When laser light is shone into a relaxed normal-vision eye to repair a tear by spot welding the retina to the back of the eye, the rays entering the eye must be parallel. Why?

Explanation

Introduction:

The lens of a human eye is characterized by being a convergent lens of high precision (in normal conditions) a convergent lens directs all the light beams in a common point called focus.

To ensure that the rays of light emerging from the converging lens all reach the same point, the rays of the incident light must be parallel. So, in order to achieve an effective repair of the retina into a relaxed normal-vision eye, it must be guaranteed that the rays of the incident laser beam are paralle...

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