This is documentation for Mathematica 6, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)


gives a list of {wavelengthv, wavelengtha} pairs, where wavelengthv is the wavelength in vacuum and wavelengtha is the wavelength in air, for the resonance absorption lines produced by element element.
AirWavelength[element, ionstage]
gives wavelengths for the lines of the ionization level ionstage.