Question

What is Tyndall effect?

Answer 1

Tyndall effect:

• “The phenomenon of scattering of a beam of light by colloidal particles, when passed through a colloidal solution, is called the Tyndall effect”.
• When light is passed through a colloidal solution, it is observed that the colloidal particles do not permit the light to pass through it completely.
• Therefore, the light beam is scattered by the particles of the colloid, and hence, the path of the scattered light becomes illuminated or visible.
• This effect can be used to verify a colloidal solution.

Example of the Tyndall effect:

• Tyndall effect is observed if sunlight enters a room through a small hole. The smoke and dust particles present in the air scatter the sunlight to produce this effect.