Raindrop (Dispersion)
- Author:
- whitedp
As light enters a raindrop it is refracted. The index of refraction of water is slightly different for different colors (frequencies) of light, this is know as dispersion. As a result of dispersion different colors of light travel different paths within the raindrop and emerge (after reflecting off the back) traveling in different directions. The incoming light has been separated into its constituent colors.