Chronology of Quantum Mechanics, Molecular, Atomic, Nuclear, and Particle Physics

1930	Erwin Schrodinger predicts the zitterbewegung motion.
1930	Fritz London explains van der Waals forces as due to the interacting fluctuating dipole moments between molecules.
1931	John Lennard-Jones proposes the Lennard-Jones interatomic potential.
1931	Irene Joliot-Curie and Frederic Joliot-Curie observe but misinterpret neutron scattering in parafin.
1931	Wolfgang Pauli puts forth the neutrino hypothesis to explain the apparent violation of energy conservation in beta decay.
1931	Linus Pauling discovers resonance bonding and uses it to explain the high stability of symmetric planar molecules.
1931	Paul Dirac shows that charge conservation can be explained if magnetic monopoles exist.
1931	Harold Urey discovers deuterium using evaporation concentration techniques and spectroscopy.
1932	John Cockcroft and Thomas Walton split lithium and boron nuclei using proton bombardment.
1932	James Chadwick discovers the neutron.
1932	Werner Heisenberg presents the proton-neutron model of the nucleus and uses it to explain isotopes.
1932	Carl David Anderson discovers the positron.
1933	Max Delbruck suggests that quantum effects will cause photons to be scattered by an external electric field.
1934	Irene Joliot-Curie and Frederic Joliot-Curie bombard aluminum atoms with alpha particles to create artificially radioactive phosphorus-30.
1934	Leo Szilard realizes that nuclear chain reactions may be possible.
1934	Enrico Fermi formulates his theory of beta decay.
1934	Lev Landau tells Edward Teller that nonlinear molecules may have vibrational modes which remove the degeneracy of an orbitally degenerate state.
1934	Enrico Fermi suggests bombarding uranium atoms with neutrons to make a 93 proton element.
1934	Pavel Cerenkov reports that light is emitted by relativistic particles traveling in a nonscintillating liquid.
1935	Hideki Yukawa presents a theory of strong interactions and predicts mesons.
1935	Albert Einstein, Boris Podolsky, and Nathan Rosen put forth the EPR paradox.
1935	Niels Bohr presents his analysis of the EPR paradox.
1936	Eugene Wigner develops the theory of neutron absorption by atomic nuclei.
1936	Hans Jahn and Edward Teller present their systematic study of the symmetry types for which the Jahn-Teller effect is expected.
1937	H. Hellmann finds the Hellmann-Feynman theorem.
1937	Seth Neddermeyer, Carl Anderson, J.C. Street, and E.C. Stevenson discover muons using cloud chamber measurements of cosmic rays.
1939	Richard Feynman finds the Hellmann-Feynman theorem.
1939	Otto Hahn and Fritz Strassman bombard uranium salts with thermal neutrons and discover barium among the reaction products.
1939	Lise Meitner and Otto Frisch determine that nuclear fission is taking place in the Hahn-Strassman experiments.
1942	Enrico Fermi makes the first controlled nuclear chain reaction.
1942	Ernst Stuckelberg introduces the propagator to positron theory and interprets positrons as negative energy electrons moving backwards through spacetime.
1943	Sin-Itiro Tomonaga publishes his paper on the basic physical principles of quantum electrodynamics.
1947	Willis Lamb and Robert Retheford measure the Lamb-Retheford shift.
1947	Cecil Powell, C.M.G. Lattes, and G.P.S. Occhialini discover the pi-meson by studying cosmic ray tracks.
1947	Richard Feynman presents his propagator approach to quantum electrodynamics.
1948	Hendrik Casimir predicts a rudimentary attractive Casimir force on a parallel plate capacitor.
1951	Martin Deutsch discovers positronium.
1953	R. Wilson observes Delbruck scattering of 1.33 MeV gamma-rays by the electric fields of lead nuclei.
1954	Chen Yang and Robert Mills investigate a theory of hadronic isospin by demanding local gauge invariance under isotopic spin space rotations; first non-Abelian gauge theory.
1955	Owen Chamberlain, Emilio Segre, Clyde Wiegand, and Thomas Ypsilantis discover the antiproton.
1956	Frederick Reines and Clyde Cowan detect antineutrinos.
1956	Chen Yang and Tsung Lee propose parity violation by the weak force.
1956	Chien Shiung Wu discovers parity violation by the weak force in decaying cobalt.
1957	Gerhart Luders proves the CPT theorem.
1957	Richard Feynman, Murray Gell-Mann, Robert Marshak, and Ennackel Sudarshan propose a V-A Lagrangian for weak interactions.
1958	Marcus Sparnaay experimentally confirms the Casimir effect.
1959	Yakir Aharonov and David Bohm predict the Aharonov-Bohm effect.
1960	R.G. Chambers experimentally confirms the Aharonov-Bohm effect.
1961	Murray Gell-Mann and Yuval Neeman discover the Eightfold Way patterns; SU(3) group.
1961	Jeffery Goldstone considers the breaking of global phase symmetry.
1962	Leon Lederman shows that the electron neutrino is distinct from the muon neutrino.
1963	Murray Gell-Mann and George Zweig propose the quark/aces model.
1964	Peter Higgs considers the breaking of local phase symmetry.
1964	J.S. Bell shows that all local hidden variable theories must satisfy Bell's inequality.
1964	Val Fitch and James Cronin observe CP violation by the weak force in the decay of K mesons.
1967	Steven Weinberg puts forth his electroweak model of leptons.
1969	J.C. Clauser, M. Horne, A. Shimony, and R. Holt propose a polarization correlation test of Bell's inequality.
1970	Sheldon Glashow, John Iliopoulos, and Luciano Maiani propose the charm quark.
1971	Gerard 't Hooft shows that the Glashow-Salam-Weinberg electroweak model can be renormalized.
1972	S. Freedman and J.C. Clauser perform the first polarization correlation test of Bell's inequality.
1973	David Politzer proposes the asymptotic freedom of quarks.
1974	Burton Richter and Samuel Ting discover the psi meson implying the existence of the charm quark.
1975	Martin Perl discovers the tauon.
1977	S.W. Herb finds the upsilon resonance implying the existence of the beauty quark.
1982	A. Aspect, J. Dalibard, and G. Roger perform a polarization correlation test of Bell's inequality that rules out conspiratorial polarizer communication. www.3rd1000.com/chronology/chrono.htm