Sentence Examples with the word index of refraction

Since the index of refraction varies with the colour or wave length of the light (see Dispersion), it follows that a system of lenses (uncorrected) projects images of different colours in somewhat different places and sizes and with different aberrations; i.e.

The amount of separation is very small, and depends on the thickness of the glass, the index of refraction and the focal length of the telescope.

The lustre is resinous to adamantine, and the index of refraction high (2.369 for sodium light).