Everything about Birefringent Crystal
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 body of Determine 8, the axis of the microscope polarizer is indicated from the funds letter P which is oriented in an East-West (horizontal) course. The axis of the microscope analyzer is indicated by the letter A and it is orient