On polarizability calculations

A semiempirical procedure is developed for the calculation of the dispersion of refractive index, polarizability, and dielectric permeability which are treated as complex quantities. A good agreement between calculated and observed values of refractive indices is obtained for all substances treated. The previously determined values for the static polarizability agree with the present results for the contribution of the electronic motion to the polarizability, this contribution being about the same for both the liquid and gaseous states of hydrogen, oxygen, and water. The value obtained for the static polarizability of liquid water is about 2.8 fold greater than the results of previous calculations; it is conjectured that most of the contribution is due to atomic and molecular motions.