Furthermore, direct imaging of DNA in extensional flow has also shown that monodisperse macromolecules undergo varying relaxation trajectories with a distribution of relaxation times . With this in mind, we differentiate the retardance curves to yield relaxation time distributions, but do not transform them to molecular weight. From the spatial decay results in Figure , we have confirmed experimentally that at any particular condition the PII-2T/CB solution exhibits an overall relaxation time that follows the inverse of the extensional strain rate,