Lecture_7 - The Propagation of Light + Geometrical Optics...

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Unformatted text preview: The Propagation of Light + Geometrical Optics Makeup Lab this Thursday afternoon (Nov. 17). Thanks Giving Week: Labs on M, T, W, and then Next M Last lecture: Next Tuesday One exam: 9:30 to 10:20 am (12/06/011) Last submission day Wed, (12/07) . Why do we see objects? Why is the universe dark? Why is the sky blue? Why does the sunset show yellow/red colors? Scattering Rayleigh Scattering 1/ 4 4 Electro-dipole radiation + - Scattering and Interference: Transmission through dilute media Separation between scattering centers is larger than the wavelength. Lateral scattering -> Raleigh scattering ~100 miles up in the Earth (high altitude atmosphere), where blue-light scattering dominates. Scattering and Interference: Transmission through dilute media Forward scattering: constructive interference Scattering and Interference: Transmission through dense media ~ wavelength is much larger than particle separations =500 nm, d~ 3 nm near the surface for STP Forward : constructive interference...
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This note was uploaded on 01/20/2012 for the course PHYSICS 331 taught by Professor Wiaodongxu during the Fall '11 term at University of Washington.

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Lecture_7 - The Propagation of Light + Geometrical Optics...

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