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# slides23all - through the appropriate F and...

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Previous Lecture Geometric Optics Ray tracing Mirror Equation 1 d o + 1 d i = 1 f – p.

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Today Mirrors Lenses – p.
Glass bends light Fig. 33-22 – p.

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Snell’s Law n 1 sin θ 1 = n 2 sin θ 2 Fig. 33-19a – p.

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Refraction by Thin Lens Converging lens focuses parallel rays to a point. Fig. 34-3 – p.

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Refraction by Thin Lens Diverging lens makes parallel rays diverge from a point. Fig. 34-5 – p.

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Magnifying Glass Fig. 34-28 – p.
Ray Tracing Ray 1 is parallel to the axis; after reflection/refraction it must pass through F . For a lens, you must determine which of the two F ’s the ray passes through. – p.

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Ray Tracing

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Unformatted text preview: through the appropriate F and refects/reFracts so that it is parallel to the axis. – p. Ray Tracing • Ray 3 passes through the center of curvature of a mirror or the center of a lens. – p. 1 Which F for Ray 1? Figs. 34-8,9 – p. 1 Dispersion Bending angle depends on color ( λ ) Fig. 33-27 – p. 1 n depends on λ Fig. 33-26 – p. 1 Total Internal Refection Fig. 33-29 – p. 1 Rainbows • refraction Fig. 33-28 • total internal re±ection • dispersion – p. 1...
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