Snells Law is the basis of optical technology. When light strikes a smooth barrier between two transparent materials the light is partly reflected and partly refracted transmitted. Sen i n2.
N1- indicates the refractive index of the first medium.
Read More on This Topic. Snells Law is the basis of optical technology. I incident angle it is the angle that forms the incident ray with the normal N. The index of refraction of a material depends on the materials properties.