Monochromatic coherent light of amplitude E, and angular frequency w passes through three parallel slits, each sepa- rated by a distance d from its neighbor. (a) Show that the time-averaged intensity as a function of the angle 0 is 2πd sin θ I(0) = I 1 + 2 cos max (b) Explain how this expression describes both the primary

Monochromatic coherent light of amplitude E, and angular frequency w passes through three parallel slits, each sepa- rated by a distance d from its neighbor. (a) Show that the time-averaged intensity as a function of the angle 0 is 2πd sin θ I(0) = I 1 + 2 cos max (b) Explain how this expression describes both the primary

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter4: Diffraction

Section: Chapter Questions

Problem 41P: A diffraction grating has 2000 lines per centimeter. At what angle will the first-order maximum be...

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Concept explainers

Diffraction of light

In physics, the term diffraction is defined as the bending of light around the corners of the obstacle. As a light ray passes by an aperture, it bends around the edges or through slits, it spreads out through a narrow opening. The diffracted light will produce fringes of bright and dark or colored bands which are labeled as a diffraction pattern.

Question

Monochromatic coherent light of amplitude E, and angular
frequency w passes through three parallel slits, each sepa-
rated by a distance d from its neighbor. (a) Show that the
time-averaged intensity as a function of the angle 0 is
2πd sin θ
I(0) = I
1 + 2 cos
max
(b) Explain how this expression describes both the primary

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