Interference and Diffraction of Waves. Interference of Coherent Waves From Two Sources.

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Presentation transcript:

Interference and Diffraction of Waves

Interference of Coherent Waves From Two Sources

Interference of Light from Soap Bubble Skin: Two Reflected Waves From Outer, Inner Surfaes

How to Make A Silvery Fish Without Metal

Mirror From Many Thin Transparent Films Alternate transparent thin films with indices of refraction n 1 and n 2 (1 < n 1 < n 2 ). What should minimum thicknesses d 1 and d 2 be to maximize reflection of incident light of wavelength ? n1n1

Why Would Fish Want to Be Silver?

Mirror As Camouflage

Diffraction: Spreading of Waves by Edges

Diffraction: Light Interference by Edges Floaters

When Can Two Point Objects Be Resolved?

Eye Exam of the Ancient Greeks: Alcor and Mizar of the Big Dipper

Huygens’ Principle Explains Diffraction Waves in isotropic medium r = v t

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