Always greater than 1, it can exceed 2 for certain materials, such as cubic zirconia and diamond.
It can be calculated by dividing the wavelength of light in a vacuum by the wavelength of light in a given medium. Always greater than 1, it can exceed 2 for certain materials, such as cubic zirconia and diamond. For 10 points\--name this material-dependent constant, used in Snell's law, which gives the ratio of the speed of light in a vacuum over the speed of light in that medium.
It can be calculated by dividing the wavelength of light in a vacuum by the wavelength of light in a given medium.
{index of refraction} or {refractive index} [prompt on "n"]