What is Tyndall effect?

(N/A) The Earth's atmosphere is a heterogeneous mixture of minute particles. These particles include smoke,tiny water droplets,suspended particles of dust,and molecules of air. When a beam of light strikes such fine particles,the path of the beam becomes visible. The light reaches us after being scattered by these particles. The phenomenon of scattering of light by colloidal particles is called the Tyndall effect.