Pupin Hall is home to the Physics and Astronomy departments. The building is named after Michael I. Pupin, a graduate of Columbia College, and a professor at the University for more than 30 years. Pupin was an active inventor and patented many of his ground-breaking inventions including a method of rapid X-ray photography, secondary X-ray radiation, telecommunications technology, and sonar-related technology. During his lifetime, he received 34 patents. His autobiography, From Immigrant to Inventor, won a Pulitzer Prize in 1924.