Definition: 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.
Input: Louis Pasteur studied the impact of this phenomenon on polarized light using tartrate crystals. Another example of this is observed by bombarding Azobenzene with certain photons. The topological type of this occurs in DNA molecules with different linking numbers. Historically important examples include dextrotartaric acid and levotartaric acid, as well as comparisons between silver cyanate and silver fulminate made by Friedrich Wohler [VOH-lur]. The type of this that impacts functional groups is cis/trans, which is a geometric form of this phenomenon. The chain and position types are structural forms. Name this phenomenon exhibited by different molecules with the same chemical formula.
Output:
Science