Tyndall Effect

The suspended particles in the container on the left scatter the light and show the beam as it passes through the liquid.

The Tyndall effect is the observed scattering of light as it passes through a colloid(see the picture at the right).

Examples: The beam of a searchlight scattered by the suspended water droplets in the night air. Sun beams as the sun light is scattered off the dust particles in the room air

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