Hans Bethe and Enrico Fermi, Physicists

20th century 21st century atom bomb atomic research bethe enrico fermi famous fermi german american german born hans albrecht bethe hans bethe history italian american italy lanl los alamos laboratory los alamos scientific laboratory los alamos man nobel prize nuclear bomb nuclear physicist nuclear physics nuclear research nuclear weapons person personality phiscis photo physicist research and development science scientist theoretical physicist theoretical physics top secret weapon research world war wwii