Question
What is Tyndall effect? Why is Tyndall effect observed when sun light passes through dense forest.
Solution
The illumination of beam of light due to scattering on collision with tiny particle (which act as particles of colloid dispersed) is called Tyndall effect.
In dense forest, particularly in the early morning, there is fog, i.e., tiny water droplets suspended in air. These droplets are large enough to scatter beam of light. This is why Tyndall effect can be observed when sunlight passes through dense forest.
