THE SMART TRICK OF BIREFRINGENT CRYSTAL THAT NOBODY IS DISCUSSING

各向异性透明晶体如方解石、石英等的折射率，是其固有的特性，称为永久双折射。The reduce section with the Michel-Levy chart (x-axis) marks the orders of retardation in multiples of somewhere around 550 nanometers. The area involving zero and 550 nanometers is called the first get of polarization colors, along with t