Karger, Snyder, and Eon 17,78 developed a five-component set of cohesion parameters that included additional HSP physicochemical properties related to the enthalpy of a system, such as an orientation. The inclusion of this parameter is based on the Kirkwood-Frohlich theory, , 80 which discussed the influence of the orientation of the electric dipoles in polar liquids. The orientation effect, according to this theory, correlates with dielectric constant. 81