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

As a result of variance in refractive indices, 1 ray will pass through the crystal at a slower fee than another ray. To paraphrase, the velocity with the slower ray is going to be retarded with respect for the faster ray. This retardation worth (the relative retardation) can be quantitatively decided applying the following equation:For optical fibe