How do you Measure the Refractive Index?The law of refraction states that:The incident ray, the refracted ray and the normal all lie in the same plane. The ratio of the sine of the angle of incidence, i to the sine of the angle of refraction, r is a constant,Refractive Index Formula: The value of this constant, for a light ray passing through a vacuum … [Read more...] about How do you Measure the Refractive Index?