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Timeline courtesy of the Atomic Heritage Foundation, Carey Sublette’s Chronology For The Origin Of Atomic Weapons, and Alex Wellerstein’s Nuclear Testing Calendar.
1938 - Austrian physicists Otto Hahn and Lise Meitner bombard uranium with neutrons and discover nuclear fission. In short, uranium is a very large atom with over 230 protons and neutrons, so whacking it with a neutron "bullet" can cause it to split in two.
Brief History of Nuclear Physics. 1896: discovery of radioactivity by Becquerel 1898: separation of Radium by Maria and Pierre Curie; discovery of α, β, γ 1911: nucleus as a central part of an atom – Rutherford. rays.
We explore a tumultuous century of nuclear physics starting with the discovery of the atomic nucleus and look at what’s in store for the next 100 years.
This comprehensive timeline traces the nuclear age, from the discovery of x-rays in 1895 through the Cold War to present day. Topics also include radioactivity and the explosion of the first atomic bomb.
1932 John Cockcroft and Ernest Walton split lithium and boron nuclei using proton bombardment. 1932 Werner Heisenberg presents the proton–neutron model of the nucleus and uses it to explain isotopes. 1933 Ernst Stueckelberg (1932), Lev Landau (1932), and Clarence Zener discover the Landau–Zener transition.
Nuclear physics is the field of physics that studies atomic nuclei and their constituents and interactions, in addition to the study of other forms of nuclear matter. Nuclear physics should not be confused with atomic physics, which studies the atom as a whole, including its electrons.
