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Physics

Module 3: Waves and Thermodynamics

Relationship Between the Inverse Square Law, the Intensity of Light and the Transfer of Energy

What is the inverse square law?

In this post, we conduct an investigation to demonstrate the relationship between inverse square law, the intensity of light and the transfer of energy, as a part of the Prelim Physics course under the module Waves and Thermodynamics and sub-part Ray Model of Light.  The inverse-square law states that a specified physical quantity is inversely proportional to the square of the distance from the source of that physical quantity.

Intensity = \frac{1}{d^{2}}

The following two videos cover the inverse square law and its respective relationships with the intensity of light and the transfer of energy.

 

Part 1: Inverse-square law explained

 

Part 2: Inverse square calculations