BIREFRINGENT CRYSTAL OPTIONS

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。In Each and every frame of Figure 8, the axis on the microscope polarizer is indicated through the cash letter P and it is oriented within an East-West (horizontal) path. The axis of your microscope analyzer is indicated from the letter A