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More Wave Behaviors of Light

Polarization - Filtering of a beam of light producing light that vibrates in only one plane

- proves light is a transverse wave
(can have many orientations)

This image has been (or is hereby) released into the public domain
by its author,  Rogilbert at the French Wikipedia project

Some sunglasses are polarized

What's wrong with picture?

Wavelength of light is too small to be polarized by a fence

Doppler Effect for Light