Suppose Im given the coordinates of some light source and some endpoint in 3-dimensional space. Light will not achieve a speed higher than c or 299 x 108 ms. Place the point light source a known distance from the surface of the object.
Combining the above expression for velocity with the definition of index of refraction we find a relationship between the wavelength vf in a medium and the wavelength 0 cf.
Calculate the refractive index of the material of a glass slab. The value of the index of refraction mostly comes out to be equal to or greater than 1 as the speed of light in a vacuum is always higher than the speed of light in any other medium. Refractive index The speed of light is determined by the medium material through which the light is travelling. Angles of refraction can be calculated using known speeds or wavelengths.