Why is Tyndall effect shown by colloidal particles ? State four instances of observing the Tyndall effect.
Tyndall effect shown by colloidal particles because of scattering of light.
Four instances of observing the Tyndall effect are:
• When a fine beam of light enters a smoke-filled dark room through a small hole.
• When sunlight passes through a canopy of dense forest in foggy/ misty conditions.
• Blue colour of sky.
• Red colour of the sun during sunrise or sunset