- What is a photon?
- How does the narrator explain why we see bands of color when white light passes through a prism?
- What is the difference between reflection and refraction of light?
- From the diagram of the light doubly refracted by the raindrop, can you predict where an observer needs to be with respect to the Sun in order to see a rainbow?
- At what times of day is it possible to see rainbows?
