PHYSICS 7E Lecture 25: PHYSICS 7E - Lecture 25 - Diffraction

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4 Jun 2018

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PHYSICS 7E - Lecture 25 - Diffraction

*Images from University Physics, Young & Freedman

An Example of Single-slit Diffraction

●Figure below is a photograph of a Fraunhofer pattern of a single horizontal slit

○Ex: what is the width of the slit?

Intensity in the Single-slit Pattern: Phasor Construction

●(a)

●(b) At the center of the diffraction pattern

(point O), the phasors from all strips

Within the slit are in phase

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