What is dall effect ?

Explanation

Tyndall effect When light enters a colloidal solution, it is scattered by the large sized colloidal dispersed phase particles. Therefore when light passes through a solution we will be able to see the path of the light as a luminous beam. This is called Tyndall effect.

Thus is an optical property exhibited by colloidal solution. This phenomenon is clearly seen w'ith a microscope placed at right angles to the path of light. Colloidal particles luminous due to absorption of light. A true solution does not show Tyndall effect.