The American Physical Society (APS) is a professional organization for physicists, which means it is a group of people who study physics. Physics is the study of matter and energy and how they interact. The APS was founded in 1899 and has over 50,000 members. The APS promotes research, education, and public outreach in the physical sciences. They also hold meetings, publish journals, and sponsor awards to recognize outstanding achievements in the field of physics. These awards are given to scientists who have made important discoveries or helped to advance the field of physics in some way.