Detailed Instructions: 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: Malus's Law gives the intensity of a light ray after it is subjected to this process. This process is often performed in commercial products through the use of dichroic materials, and commonly comes in circular and linear types. It also occurs by reflection when the incident light ray comes in at Brewster's angle. For 10 points, name this process by which a light ray's waves are made to oscillate in only one direction, which is commonly done using Polaroid filters.
A:
Science