Abstract

The translational motion of a particle in a fluid is a problem with spectacular historical roots^[1] that has continued to receive substantial theoretical attentation during the last twenty five years.^[2] Recently it has been realized that it is possible to probe particle motions on length scales less than 5 A using newly developed multiple light scattering spectroscopies.^[3] This thousand fold increase in resolution offers us a possiblity to study translational motion in a new physical regime where the hydrodynamic degrees of freedom of the surrounding fluid play an important role.

© 1992 IQEC