Software then autocorrelates the light from the individual speckles to perform dynamic light scattering at very low angles. Using the DLS capability combined with oscillatory motion of the sample cell, some rheological measurements can be performed. This is particularly useful and impressive with crystalline samples. This photo was taken with the 1X color camera of the AB6 sample after crystallization had occurred. The different colors are the result of different wavelengths of the white light illumination satisfying the Bragg condition at different angles relative to the lights.
Bright sports are large crystallites.
Diffuse color occurs are due to small crystallites. This image was taken prior to launch. The circular outline is the 2 cm outside diameter of the sample cell. Photo taken by Art Bailey.