The index of refraction for the ordinary ray is constant and is independent of direction. The index of refraction for the extraordinary ray is a continuous function of direction. The index of refraction for the ordinary ray is independent of direction. The two indices of refraction are equal only in the direction of an optic axis. The measure of birefringence (Î´) [delta] is the difference between the indices of refraction of the two rays.
A preview of what LinkedIn members have to say about Rob: 1  Rob Joyce is the sort of building contractor you can trust. As development director at Mansell, he was always a pleasure to do business with, and ensured the correct people within his organisation provided us with the pre contract advice we needed.
Kevin Lynch is a technical analyst who assisted the BAU in finding Garcia's attacker in Penelope. He has since appeared in several episodes of Criminal Minds as a recurring character, in which he was Garcia's love interest. Nothing is known about Kevin's early life, including how he acquired his computer skills.