HOW MUCH YOU NEED TO EXPECT YOU'LL PAY FOR A GOOD BIREFRINGENT CRYSTAL

Due to change in refractive indices, one particular ray will go through the crystal in a slower price than the opposite ray. To put it differently, the velocity of your slower ray will likely be retarded with regard towards the speedier ray. This retardation benefit (the relative retardation) might be quantitatively identified applying the followin