What is light? How does it operate? What are its properties? Why is it so important to the foundations of our physical world? The Physics of Light examines the nature of light and how it is harnessed in our lives. The basic properties of light and the wave model are explained, while various applications are demonstrated using these facts. We discuss the concepts of wavelength, frequency, speed, reflection, refraction, total internal reflection and dispersion. We investigate the EMR spectrum, the colour of objects, and the addition and subtraction of colours are explained.