What is tyndall effect?

Explanation

The tyndall effect is the effect of light scattering in colloidal dispersion. While showing no light in a true solution. This effect is used to determine whether a mixture is a true solution or a colloid.
"To be classified colloidal, a material must have one or more of its dimensions (length, width, or thickness) in the approximate range of 1-1000 nm.Because a colloidal solution or substance (like fog) is made up of scattered particles (like dust and water in air) light cannot travel straight through. Rather, it collides with these micro-particles and scatters causing the effect of a visible light beam. This effect was observed and described by John Tyndall as the Tyndall Effect.
The tyndall effect is an easy way of determining whether a mixture is colloidal or not.
When light is shined through a true solution, the light passes cleanly through the solution,
When light is passed through a colloidal solution, the substance in the dispersed phases scatters the light in all directions, showing it is colloidal solution.