This instrument can also measure the refractive-index homogeneity, the flatness, the Angle error, the wedge Angle of crystal element.

Carboxylic acid ester compound, liquid crystal compound, liquid crystal composition, liquid crystal element and light modulation method.

A classy creation, this rhodium-plated Y-shaped necklace has two briolette-cut clear crystals. These are set on a snake chain and clamped together with a clear crystal element set in pave.