In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Q: This property is measured by the Jones vector, and is said to be elliptical if the Jones vector contains a non-real entry. The circular form may be created by shining light perpendicularly onto a doubly refractive quarter-wave plate, while the linear form results when light is shone off a plane surface at the Brewster angle. According to the Faraday effect, an external magnetic field alters, FTP, what property of light waves in which the electric field points in a specified direction, which was exploited in cameras made by Edwin Land
A:
Science