Answered: Very short pulses of high intensity…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Very short pulses of high intensity laser beams are used to repair detached portions of the retina of the eye. The brief pulses of energy absorbed by the retina welds the detached portion back into place. In one such procedure, a laser beam has a wavelength of 810 nm and delivers 250 mW of power spread over a circular spot 510 micrometers in diameter. The vitreous humor (the transparent fluid that fills most of the eye) has an index of refraction of 1.34. (A) what average pressure would the pulse of the laser beam exert at normal incidence on a surface in air if the beam is fully absorbed? (B) what is the wavelength of the laser light inside the vitreous humor of the eye? (C) what is the frequency of the laser light inside the vitreous humor of the eye?

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