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Physics

Module 3: Waves and Thermodynamics

Practical Investigation: Phenomenon of the Dispersion of Light

What is the phenomenon of the dispersion of light?

In this post, we conduct a practical investigation to demonstrate and explain the phenomenon of the dispersion of light, as a part of the Prelim Physics course under the module Waves and Thermodynamics and sub-part Ray Model of Light. Dispersion of light occurs when white light is separated into its different constituent colours due to refraction and Snell’s law. White light only appears white because it is composed of every colour on the visible spectrum.

The following two videos cover an investigation to demonstrate the phenomenon of the dispersion of light.

 

Part 1: Dispersion of light explained

 

Part 2: Newton’s prism experiment