Roscoe L Koontz designed a pinhole gamma ray camera called the collimator, and helped to design and fabricate automatic air and water radiation activity measuring devices. He was the first formally trained health physicist.
Roscoe L. Koontz was born in St. Louis, Missouri in 1922. Graduating from Vashon High School in St. Louis, Koontz spent three years in the army during World War II. While in the service, he received technical training through a special pre-engineering army training program at West Virginia State College. Upon discharge from the army in 1946, he returned to Tennessee State University and graduated with a Bachelor of Science in Chemistry.