Question

what is tyndall effect​

Answer 1

scattering of light by colloidal particles is called Tyndall effect

Answer 2

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The Tyndall effect is the phenomenon in which the particles in a colloid scatter the beams of light that are directed at them. ... This scattering makes the path of the light beam visible, as illustrated below. Generally, blue light is scattered to a greater extent when compared to red light.