Page 55 - Introduction to Colloid and Surface Chemistry
P. 55

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.
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