A theory of electric polarisation in liquids

In the frame of a theory previously developed by the author for non-polar liquids, the static dielectric constant of polar liquids is described through a new formula without adjustable parameters, valid for spherical molecules carrying a mathematical dipole. The application of the formula to 20 polar liquids shows that the dipole moments resulting from the theory are satisfactorily compared with those deduced from vapour phase data. The agreement obtained in this way between theory and experiment is better than that obtained through the analogous Onsager's formula.