Atoms minutephysics cropped

Inventions and discoveries in the Atomic Physics Field

By Rahul Silva
  • Double Slit Experiment conducted

    Double Slit Experiment conducted

    Thomas Young conducts the double-slit experiment with light
  • John Dalton formalises "Atom"

    John Dalton formalises "Atom"

    John Dalton held that all the atoms of an element are identical, of the same size and weight
  • Discovery of spectral lines

    Discovery of spectral lines

    The German optician Joseph von Fraunhofer independently discovered spectral lines
  • Balmer Lines verified mathematically

    Balmer Lines verified mathematically

    Johann Balmer finds a mathematical expression for observed hydrogen line wavelengths
  • Photoelectric Effect discovered

    Photoelectric Effect discovered

    Heinrich Hertz discovers the photoelectric effect
  • Radioactivity discovered

    Radioactivity discovered

    Antoine Becquerel discovers the radioactivity of uranium
  • Discovery of the Electron

    Discovery of the Electron

    Emil Wiechert, Walter Kaufmann and J.J. Thomson discover the electron
  • Nucleus discovered

    Nucleus discovered

    Rutherford conducted the Gold foil experiment to come up with the Rutherford model of the atom
  • Quantum mechanical explanation of the Atom

    Quantum mechanical explanation of the Atom

    Niels Bohr presents his quantum model of the atom
  • Pauli Exclusion principle and Magnetic spin

    Pauli Exclusion principle and Magnetic spin

    Wolfgang Pauli states the quantum exclusion principle for electrons
  • Discovery of the Neutron

    Discovery of the Neutron

    James Chadwick discovers the neutron