92168.pdf

Kinetic properties 45

A Monochromatic

source

Crossed nico!

prisms

Observation

telescope

Figure 2.12 Apparatus for observing streaming birefringence

resistance of the medium rapidly enough to remain in phase, and the
dielectric constant drops in a more or less stepwise fashion. Each
characteristic frequency where there is a notable change of dielectric
constant is related to the time taken for the molecule to rotate about
a particular axis, and hence, to the appropriate rotary diffusion
coefficient.