Question

What is Tyndall effect?

Answer 1

Tyndall effect: If a homogeneous solution is observed in the direction of light, it appears clear and when it is observed from a direction at right angles to the direction of the light beam, it appears perfectly dark. But when a beam of light passes through colloidal solutions, it is scattered, the maximum scattered intensity being in the plane at right angles to the path of light. The path of beam becomes visible. The effect was first observed by Faraday but was studied in detail by Tyndall and the effect is not commonly known as Tyndall effect.