Purpose: To show the dependence of scattering on wavelength and the polarization due to scattering.

Shine the light beam through the water along the axis of the trough. Mix in a small amount of powdered milk. Note the color of the light scattered near the lighted end, and the color of the light transmitted through the water. Use the polaroid to show the state of polarization of the scattered light. You can use the polaroid both before and after the scattering.

Ref: H. Kruglak, Phys. Teach. 11, 559 (1973).

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