Could someone please tell me the:Refractive index for Copper Bismuth Sulphide. I guess the formula is: CuBiS2
Refractive index is a ratio of speeds of light in different media. It seems pointless to talk about speed of light in copper, but there is still a refractive index. It can be found by Brewster's Law. In short, light reflected off surfaces is partially polarized. The degree of polarization increases as the angle between the light and the surface reaches 0. The angle at which complete polarization occurs tells you the refractive index of the material.
