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.

He lends his name to an alternate name for deuteranopia, and a period of low solar activity from 1790 to 1830 is called his namesake minimum. He independently discovered the Hadley cell by analyzing his extensive meteorological diary. The basis of stoichiometry was established by his law of multiple proportions. One theory that he is credited with discovering states that the namesake particles cannot be subdivided; though that postulate was incorrect, it was some of the first insights into atomic theory. Name this man, who gives his name to the law of partial pressures and the atomic mass unit.
Science