Air Refractive Index

Computes either the Edlen or Ciddor refractive index of air

Given wavelength, temperature, pressure, humidity and CO2 concentration, uses algorithms described in http://emtoolbox.nist.gov/Main/Main.asp to compute the real part of the refractive index of air. Valid for visible wavelengths and most surface-level conditions. Useful for determining the effect of changing atmospheric conditions on high spectral resolution optical components.