American theoretical physicist Gerald Goertzel (1919–2002) worked on the Manhattan Project, formed Sage Industries, and worked for many years at IBM, where he was active in design automation, data compression, and digital printing. He developed the Goertzel algorithm, a data signal processing technique. Nunzio Tralli (1917–79) taught at St. John's University and was the author of several books on physics, including Classical Electromagnetic Theory and Atomic Theory: An Introduction to Wave Mechanics, which he co-wrote with Frank R. Pomilla.