Refractive Indices

Use Wolfram|Alpha to obtain the index of refraction for a wide variety of substances. Compute the refractive index of water or moist air based on temperature and wavelength.

Refractive Indices

Compute the refractive indices of air, water and other substances.

Calculate the refractive index of humid air:

Determine the refractive index of solid and liquid water:

Look up the refractive index of a material: