The dielectric relaxation of some spherical molecules

Previous measurements made in this laboratory have shown that elongated and flat molecules, and in general, non-spherical molecules, have a viscosity-dependent relaxation time, whereas the nearly spherical molecules exhibit relaxation times which are virtually independent of the viscosity of the medium. This paper will present some data which substantiates the viscosity independence of the relaxation times of some spherical molecules and will also give evidence of the existence of dipole-dipole interactions in the pure polar liquids.