What is tyndall effect and  brownian movement ? Please give answer at the earliest possible.

Hi,

Whenever light passes through a colloidal solution or medium, the colloidal particles scatter the light when light strikes them. This in turn illuminates the path of the light i.e. the colloidal medium trough which light passes. Colloidal particles in a way converges the light from a single beam to a whole illuminate space.

For e.g. we are able to see a movie in a theatre because of this Tyndall effect. Projector works on this phenomenon. When a movie is run on a projector, it projects itself on the big screen. We are able to see it on the screen due to scattering of light by the dust (colloidal particles) particles present in the theatre.

 The zig-zag movement of colloidal particle is known as Brownian movement.

Hope it helps.

Cheers!