Thomas Ypsilantis

Thomas John Ypsilantis (Greek: Θωμάς Υψηλάντης; June 24, 1928 – August 16, 2000) was an American physicist of Greek descent. Ypsilantis was known for the co-discovery of the antiproton in 1955, along with Owen Chamberlain, Emilio Segrè, and Clyde Wiegand. Following this work, he moved to CERN to develop Cherenkov radiation detectors for use in particle physics.