Atom Timeline Modern

  • Period: to

    Modern

  • Dalton

    He gave an oral presentation titled ‘Experimental Essays’, that dealt with information on his experiments on gasses and the study of the nature and chemical makeup of air in relation to atmospheric pressures.
  • Dalton

    he came up with the ‘Dalton Law’ also known as Dalton's Law of Partial Pressures’.
  • Dalton

    He authored an article for the Manchester Literary and Philosophical Society, in which he presented a chart on atomic weights, which was one of the first atomic charts to be created at that time.
  • Dalton

    He further explained atomic theory and atomic weight in the book titled ‘A New System of Chemical Philosophy’
  • Dalton

    He authored an appendix for the book ‘A New System of Chemical Philosophy’.
  • JJ Thomson

    He became Cavendish Professor of Physics.
  • JJ Thomson

    Thomson began studying cathode rays, which are glowing beams of light that follow an electrical discharge in a high-vacuum tube.
  • JJ Thomson

    He began studying atoms with a series of experiments in the Cavendish Laboratory.
  • JJ Thomson

    He discovered the Electron in the atom.
  • Rutherford

    Rutherford discovers two types of rays.
  • Rutherford

    Ernest Rutherford announces that radioactivity is a manifestation of sub-atomic change.
  • Niels Bohr

    He joined the Copenhagen University, where he initially studied philosophy and mathematics.
  • JJ Thomson

    Received the Nobel Prize for his discovery of the electron.
  • Niels Bohr

    He received his Master’s degree in Physics in 1909.
  • Rutherford

    Ernest Rutherford discovered the nucleus using the gold foil experiment.
  • Niels Bohr

    Bohr’s model of atomic structure was published which became the basis of the famous quantum theory.
  • Niels Bohr

    Niels Bohr became a Professor at the University of Copenhagen.
  • Rutherford

    Ernest Rutherford changed Nitrogen to Oxygen; he split the atoms.
  • Rutherford

    Ernest Rutherford discovers protons.
  • Niels Bohr

    He founded the university’s Institute of Theoretical Physics.