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Chapter 24Lectures 20–22

Interference, Diffraction & Light

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Huygens' Principle

Wavelets build next wavefront

Thin Film Interference

Oil slick — adjust thickness

Young's Double-Slit

Adjust λ, d, L — see fringes

Single-Slit Diffraction

Adjust width, see central max

Diffraction Gratings

White light → spectrum

Atmospheric Optics

Rainbow, haloes, coronae, glories