Chapter II molecular and ionic interactions in dielectrics

Many papers have been published which are generalizations or refinements of the basic theoretical analyses of Kirkwood and Frőhlich. Several theories often fit a more or less limited range of experimental results so that one feels that agreement with experimental dielectric constant values alone is not a very conclusive check on the basic assumptions of these theories. Multiplicity of theories rather than disagreement with experiment seems to be the chief theoretical problem in several aspects of dielectric behaviour at present.