Atomic Timeline

By RachelFlabs
  • 400

    Democritus

    Democritus
    Democritus discovered the atom. All atoms are indivisble, Atom derives from atomos. Atomos is greek for indivisible.

  • John Dalton

    John Dalton
    He proposed atomic theory, with spherical solid masses in motion. Atoms can't be made or destroyed.

  • Dmitri Mendeleev

    Dmitri Mendeleev
    Dmitri Ivanovich Mendeleev was a Russian chemist and inventor. He is credited as being the creator of the first version of the periodic table of elements. Using the table, he predicted the properties of elements yet to be discovered.

  • Henri Becquerel

    Henri Becquerel
    Antoine Henri Becquerel was a French physicist, Nobel laureate, and the discoverer of radioactivity along with Marie Skłodowska-Curie and Pierre Curie, for which all three won the 1903 Nobel Prize in Physics.

  • JJ Thomson

    JJ Thomson
    Due to his study of the positively charged particles he led to the development to the mass spectrograph. Which in turn enabled him to discover isotopes. (atoms of the same atomic number, but different weight.) Thomson work has benefited the atom community of scientist by also explaining chemical bonding and its molecular structure.

  • Ernest Rutherford

    Ernest Rutherford
    Ernest Rutherford, 1st Baron Rutherford of Nelson OM, FRS was a New Zealand-born British chemist and physicist who became known as the father of nuclear physics. He is considered the greatest experimentalist since Michael Faraday.

  • Erwin Schrodinger

    Erwin Schrodinger
    Erwin Rudolf Josef Alexander Schrödinger, was an Austrian physicist who developed a number of fundamental results in the field of quantum theory, which formed the basis of wave mechanics

  • Henry Moseley

    Henry Moseley
    Henry Gwyn Jeffreys Moseley was an English physicist. Moseley's outstanding contribution to the science of physics was the justification from physical laws of the previous empirical and chemical concept of the atomic number.

  • James Chadwick

    James Chadwick
    Sir James Chadwick CH FRS was an English Nobel laureate in physics awarded for his discovery of the neutron. Chadwick studied at the University of Manchester and the University of Cambridge.

  • Niels Bohr

    Niels Bohr
    Niels Henrik David Bohr was a Danish physicist who made foundational contributions to understanding atomic structure and quantum mechanics, for which he received the Nobel Prize in Physics in 1922.