Measure of the bending of a ray of light as it passes from one medium to another.


The refractive index of the rays of sunlight allows us to see the different colors in a rainbow after the rain.

In science class, we went over therefractive index of light and that really bored me and my friend, so we left.

The refractive index indicated our new material, invented by our top scientists in our research and development lab, was usable as a visor.