Brookhaven National Laboratory (BNL) sits on the site of Camp Upton, a United States army installation that was used as a training ground in World War I and World War II by thousands of soldiers including composer Irving Berlin. In 1946 ownership of the grounds was transferred for use by the new national laboratory, which began operating the following year. Brookhaven researchers have since made such diverse contributions as patenting Maglev, designing one of the first video games, detecting the first solar neutrinos, designing pollutant-eating bacteria, creating the first PET scan, and various contributions to particle physics. The laboratory contains the Relativistic Heavy Ion Collider (RHIC) and the National Synchrotron Light Source. Noted physicist and Nobel laureate I.I. Rabi was instrumental in the national laboratory's establishment.