The atomic model timeline

Timeline created by Haylie_1432
  • -500 BCE

    The alchemists

    The alchemists
    Alchemists developed a theory that all metals are composed of mercury and sulfer and that it is possible to change base metals into gold
  • -460 BCE

    Democritus

    Democritus
    He was an ancient greek pre-socratic philosopher famous for his atomic theory of the universe
  • -384 BCE

    aristotle

    aristotle
    Greek philospher who invented a theory thats is supposedly incorrect in present time. The theory seemed to be supported in everyday life
  • 427

    plato

    plato
    Plato introduced the atomic therory in which ideal geometric forms serve as atoms
  • Robert Boyle

    Robert Boyle
    Anglo-Irish natural philosopher, chemist, physicist, and inventor.
  • Lavoisier

    Lavoisier
    Lavoisier proposed theoxygen combustion theory, which was based on sound mass measurements.
  • Solid Sphere of "Billiard Ball" model

    Solid Sphere of "Billiard Ball" model
    The Billiard Ball model because Dalton thought atoms were the smallest particles of matter, he envisioned them as solid, hard spheres, like billiard (pool) balls, so he used wooden balls to model them.
  • John Dalton

    John Dalton
    Eglish chemist, physicist, and meteorologist. He was best known for proposing the modern atomic theory.
  • dmitri mendeleev

    dmitri mendeleev
    He created the periodic table of elements
  • J.J.Thomson

    J.J.Thomson
    Thomson created the discovery of the electron
  • The curies

    The curies
    Pierre and Marie Curie were to discover and isolate radium
  • Ernest Rutherford

    Ernest Rutherford
    British physicist who was best kown to be the father of nuclear physics
  • plum pudding model

    plum pudding model
    Created by J.J. Thomson. Early 20th century model of an atom, later disproved.
  • Albert Einstein

    Albert Einstein
    German born theoretical scientist and physicist. Developed the theory of relativity
  • neils bohr

    neils bohr
    A Danish physicst who made foundational contributions to understanding atomic structure and quantum theory.
  • Henry G.J. Moseley

    Henry G.J. Moseley
    English physicist who created moseley's law
  • solar system model

    solar system model
    Created by Bohr. Solar system model states that atoms consist of a nucleus with a number of electrons in orbits around the nucleus
  • Robert Millikan

    Robert Millikan
    succeeded in finding the size of an electron
  • Werner Heisenberg

    Werner Heisenberg
    contributed to atomic theory through formulating quantum mechanics in terms of matrices and in discovering the incertainty principle
  • Electron Cloud model

    Electron Cloud model
    Created by werner Heisenberg. A way to help visualize the most probable position of electrons in an atom.