Question

What happens in the Tyndall effect with the colloidally suspended particles?

Answer 1

1. Definition: The scattering of light as a light beam passes through a colloid is called the Tyndall effect and was first described by 19th-century physicist John Tyndall.
2. The amount of scattering depends on the frequency of the light and the density of the particles.
3. Example: Shining a flashlight beam into a glass of milk is an excellent demonstration of the Tyndall effect. You might use skim milk or dilute the milk with a bit of water so you can see the effect of the colloid particles on the light beam.

Therefore, in the Tyndall effect, the colloidally suspended particles trace out the path of a strong beam of light because of the scattering of light by the colloidal particles.