Kenneth I. Greisen completed his graduate work in physics at Cornell in 1942. He then joined the large team of physicists working for the Manhattan Project at Los Alamos, New Mexico in 1943. He was a member of the team that worked on the detonation system for the first atomic bomb.
He joined the Physics Department as a faculty member in 1946. He served as University Ombudsman from 1975-77, prior to his election as Dean of the University Faculty. During his term as Dean, he often rode his bicycle to Day Hall, and parked it in the spot where someone had posted the sign, “Reserved for Dean of Faculty”.
Professor Emeritus Greisen passed away on March 17, 2007 at the age of 89.