Let there be light!

We have come a long way from our ancestors who first learnt to tame fire both for its heat, as well as its light. The sun and fire are no longer the only sources of light and illumination is no longer its only use. Today, we engineer many different kinds of sources for a variety of applications, ranging from life-saving medical devices to technology, whose sole aim is to entertain us! In this presentation, we will look at total internal reflection and interference, and study their role in a variety of everyday applications and phenomena.