Hace 2 días · Joseph Priestley FRS ( / ˈpriːstli /; [3] 24 March 1733 – 6 February 1804) was an English chemist, natural philosopher, separatist theologian, grammarian, multi-subject educator, and liberal political theorist. [4] He published over 150 works, and conducted experiments in several areas of science. [5] [6]