article: Atomic nucleus
links: Isotope Enrico Fermi J. J. Thomson American football Star Newtonian mechanics Standard Model Nature (journal) Plum pudding model Nuclear fusion 1911 1925 Frédéric Joliot-Curie 1932 1929 Michael Faraday Ernest Rutherford Atomic mass Radioactivity Lise Meitner Nuclear physics United States Tübingen Atomic number Otto Hahn Hans Geiger Irène Joliot-Curie James Chadwick Gilbert N. Lewis 1931 Maria Goeppert-Mayer World War II Cross section (geometry) 1930 1909 Hiroshima Wolfgang Pauli Nagasaki, Nagasaki Geiger-Marsden experiment Joint European Torus 1934 Nuclear fission California Institute of Technology