Lecture12

# Lecture12 - Major Concepts in Physics Lecture 12 Prof Simon...

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PHY102 1 Major Concepts in Physics Lecture 12. Prof Simon Catterall Office 309 Physics, x 5978 http://physics/courses/PHY102.08Spring

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PHY102 Anouncements ± Exam 2 – Wednesday March 5 in class ² Online: exam sample plus solutions, homework2 solutions, quiz 2 solutions ² Material: everything from lecture 8-12 inclusive (thermal radiation, line spectra, color mixing, ray approx, mirrors, lenses, polarization) ² Similar in format/style/grading to exam 1 ² Review session in class on Monday March 3
PHY102 Plan for today ± Recap last lecture: converging/diverging mirrors and lenses ± Ray diagrams and use in finding images ± Mirror\lens equations – examples ± Polarization EM waves. Brewster’s angle.

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PHY102 Spherical mirrors ± Two types – diverging and converging named according to whether rays diverge/converge after reflection ± Possess a focal point – a point in space through which all rays, which were initially parallel to the symmetry axis of the mirror, pass after reflection ± 2 focal points (in front and behind). focal length =distance from mirror= radius of curvature / 2.
PHY102 Finding images – ray diagrams ± Locate image by drawing at least 2 rays – typically one that goes through focal point and one that passes through center of curvature. Image at crossing point.

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Lecture12 - Major Concepts in Physics Lecture 12 Prof Simon...

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