The Atom and The Periodic Table

By janagrizzle27
  • 1939 BCE

    Lise Meither

    Lise Meither
    She created the Nuclear Fission
  • 1932 BCE

    James Chadwick

    James Chadwick
    He discovered the Neutron in 1932.
  • 1925 BCE

    Heisenberg

    Heisenberg
    He said it was impossible to locate the location of a Atomic molecule.
  • 1914 BCE

    H.G. Moseley

    H.G. Moseley
    He developed the application of X-ray spectra to study the Atomic structure. His discoveries resulted in a more accurate positioning of elements in the Periodic Table by closer determination of atomic numbers.
  • 1913 BCE

    Niels Bohr

    Niels Bohr
    He developed and published his model of Atomic structure, which was very small.
  • 1911 BCE

    Marie Curie

    Marie Curie
    Marie Curie was a French Physicist and Chemist who conducted research on Radioactivity. She discovered the radioactive elements Radium and Polonium.
  • 1911 BCE

    Hans Geiger

    Hans Geiger
    Hans was a German physicist. He is best known for the Geiger-Marsden experiment which discovered the Atom Nucleus. He also invented a reliable device capable of measuring Alpha Radiation.
  • 1911 BCE

    Ernest Rutherford

    Ernest Rutherford
    Ernest discovered the Alpha Particles, positively charged particles emitted from radioactive elements. He devised the Gold Foil experiment to investigate the structure of positive and negative charges in the Atom.
  • 1909 BCE

    R.A. Millikan

    R.A. Millikan
    He was an American experimental physicist who came up with the measurement of elementary electronic change and worked on Photoelectric effect.
  • 1897 BCE

    J.J Thomson

    J.J Thomson
    J.J Thomson was an English physicist. He discovered the Electron and constructed a model of the Atom.
  • 1869 BCE

    Dmitri Mendeleev

    Dmitri Mendeleev
    Dmitri was a Russian chemist and inventor. He formulated the Periodic Law and created a farsighted version of the Periodic Table of Elements
  • 1803 BCE

    John Dalton

    John Dalton
    John Dalton was a English chemist,physicist, and meteorologist. He is best known for his work in the development of modern atomic theory and his research into color blindness.
  • 1800 BCE

    Issac Newton

    Issac Newton
    Isaac Newton was an English mathematician, astronomer, and physicist who is widely recognized as one of the most influential scientist of all time and a key figure in the scientific revolution.
  • 460 BCE

    Democritus

    Democritus
    Democritus was a influential Ancient Greek pre-soratic philophser. He was primarily remembered for his formulation of an atomic theory of the universe.