Physics 1161 Lecture 19 Polarization. Unpolarized & Polarized Light.

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Presentation transcript:

Physics 1161 Lecture 19 Polarization

Unpolarized & Polarized Light

Polarization of Light Unpolarized Polarized Electric fields of unpolarized light vibrate in all directions perpendicular to the direction the light travels. A polarizing filter can constrain light to vibrate in only one direction

Polarizing Filters

Polarization

Reflected Horizontally Polarized Polarization of Reflected Light

Brewster’s Angle At this angle of incidence all the reflected light is polarized parallel to the surface of the material (non- conducting) Polarization of Reflected Light

Which pair of glasses is best suited for automobile drivers? (The polarization axes are shown by the straight lines.) 1.A 2.B 3.C

Two Polarizers Perpendicular Axes Parallel Axes

Insert Third Polarizer

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