Who we are. The American Institute of Physics (AIP) is a federation of 10 Member Societies which in turn have more than 130,000 members across the globe. AIP was founded in 1931 in an effort to alleviate societal and economic turmoil and to better humanity through science. Today, almost 100 years later, we further our positive impact through our mission: to advance, promote, and serve the physical sciences for the benefit of humanity. We want you...