Great scientists By Lourdescm Period: 1852 to 1908 Henri Becquerel Period: 1867 to 1934 Marie Curie Period: 1871 to 1937 Ernest Rutherford Period: 1879 to 1955 Albert Einstein Period: 1879 to 1968 Otto Hahn Period: 1885 to 1962 Niels Bohr 1896 Discovered radioactivity Period: 1901 to 1958 Ernest Lawrence Period: 1901 to 1954 Enrico Fermi 1903 Shared Nobel prize in physics (radiation research) 1910 Atomic nucleus was discovered by Rutherford 1911 Nobel prize in chemistry 1913 Bohr model of the atom 1915 Theory of General Relativity 1929 Cyclotron Ernest Lawrence invented Cyclotron (accelerated particles to bombard with atoms) 1938 Discovery of nuclear fission of uranium and thorium 1942 First nuclear reactor by Fermi
