Small-Angle Rayleigh Scattering in CCl4Subjected to a Temperature Gradient

Abstract
Small-angle Rayleigh-scattering experiments have been performed in liquid carbon tetrachloride subjected to a temperature gradient. The contributions of both the heat mode as well as the viscous mode to the enhanced scattering intensity are observed. Although the observations are qualitatively in agreement with theoretical predictions, the viscous contribution is much larger than predicted.