The phenomenon of scattering of white light by colloidal particles is known as Tyndall effect.
Examples:
(i) A fine beam of sunlight entering a smoke-filled room through a hole. Smoke particles scatter the white light and hence the path of light beam becomes visible.
(ii) (a) Sunlight passing through the trees of the forest.
(b) Tiny water droplets in mist scattering white light.
