Reflecting in the bath

The video tutorial explains the concept of total internal reflection, where light reflects entirely within a medium instead of passing through a boundary. It uses the example of light transitioning between glass and air, and further explores the behavior of light in a light bulb with different media. An experiment is demonstrated by submerging a light bulb in water, showing how total internal reflection creates a mirror-like effect. The tutorial highlights safety considerations when performing such experiments.

How does the presence of frosting inside a light bulb affect its appearance when submerged in water?

What precautions should be taken when using a light bulb submerged in water?