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Chapter 36b - Announcements Review for the final tomorrow...

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Ch. 36: Diffraction - Part B 1 December 9, 2009 Announcements ! Review for the final, tomorrow, Thursday, Dec. 10, 6 th and 7 th period, NPB 1001. ! Final exam is on Saturday, Dec. 12, 8-10 pm. Turlington L011 T-Z: Norman Hall 137 M-S: Weimer Hall 1064 F-L: Turlington L007 A-E: Room First letter of last name
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Ch. 36: Diffraction - Part B 2 December 9, 2009 Chapter 36: Diffraction ! Single-slit diffraction. ! Diffraction by a circular aperture. Resolvability. ! Diffraction by a double slit. ! Diffraction gratings. ! Diffraction by organized layers. ! HITT free question.
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Ch. 36: Diffraction - Part B 3 December 9, 2009 Diffraction of Light as a Wave ! Light produces and interference pattern called a diffraction pattern as it passes through a narrow slit or pinhole, sharp edges, ordered structures (crystals)... Diffraction pattern of a disk. Diffraction of a narrow vertical slit. broad and intense central maximum narrow and less intense secondary or side maxima Fresnel bright spot
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Ch. 36: Diffraction - Part B 4 December 9, 2009 Chapter 36: Diffraction ! Diffraction of the sharp edges of a razor blade. photo of the diffraction image photo of the real object
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Ch. 36: Diffraction - Part B 5 December 9, 2009 Diffraction by a Single Slit ! Central maximum. ! Locating the minima. single, narrow slit of width a sin 2 θ = a L first minimum: sin 2 2 λ θ = a sin θ λ = a
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Ch. 36: Diffraction - Part B 6 December 9, 2009 Diffraction by a Single Slit sin 4 2 λ θ = = a L second minimum: sin 2 θ λ = a
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