Abstract
A photometer is described for the automatic measurement and recording of the dissymmetry of light scattering in the angular range 20–160°. The instrument is primarily designed for the measurement of the molecular weight and associated parameters of high polymers. A high degree of freedom from stray light and an unusually favorable optical geometry are achieved by employing a unique optical system and a cylindrical scattering cell of new design. Adequate sensitivity, accuracy, and stability are demonstrated, together with ease and flexibility of operation up to temperatures of 150°C. Scattered light intensity as a function of angle is both recorded and punched onto paper tape for subsequent processing in a digital computer.
© 1961 Optical Society of America
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