Abstract
The light intensities (crossed and parallel polaroids) transmitted by a spherulitic polymer film of uniform thickness have been measured using a photomultiplier-recorder system. These intensity measurements have been correlated with the optical retardations (Berek compensator) measured over the same temperature interval. The linear relationship obtained establishes the validity of the technique for following changes in optical retardation. Typical results are given for polyhexamethylene adipamide (66 nylon) and isotactic polypropylene polymer films.
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