Book excerpt: The use of the time-dependent electro-optical effect, and a variety of light scattering and spectroscopic techniques, have provided increasingly sophisticated information on on the behaviour and properties of molecules and particles in solution. These techniques can give information on high-field effects, macromolecules, gels, liquid crystals, membranes, colloidal particles, and similar materials. Latest results presented at this established series of conferences make this volume an important reference source for researchers in physics, chemistry and biology.