To understand Scattering, let's do a Small Experiment


Let's take a Laser, and two glasses. One has Sugar Solution (Sugar + Water), and the other has just water.

While passing laser light through the glass, we observe that we cannot see the Ray of Light in both Sugar Solution and Water


Now, in Water, we add milk and Stir it


We now observe that we can see the Ray of Light in the Milk + Water glass.

This is due to Scattering of Light

The milk particles in the Second Glass are big enough to scatter light, and thus we see the Ray of Light in the 2nd Glass


Now, we can Define Scattering of Light


Definition of Scattering of Light

Scattering of light means throwing of light by particles in all possible directions




Did you notice that this Scattering of light is not done by all particles?

There are Sugar particles in the Sugar Solution, but they are very small... so they don't scatter light.

Whereas, the milk particles in Milk are big enough to Scatter light


Now, lets look at a few applications of Scattering of Light

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.