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Atomic Structure Timeline

  • Antoine Lavoisier

    Antoine Lavoisier
    In 1772, Lavoisier named the elements carbon, hydrogen, and oxygen. He also discovered the role of oxygen in combustion and respiration. He also discovered that water was a compound of hydrogen and oxyge. He discovered that sulfur was an element.
  • Joseph Louis Proust

    Joseph Louis Proust
    Proust proved the law of definate proportions, or Prousts Law. This states that the relative quanities of any given pure chemical compund's constituent elements reamin invarient.
  • Solid Sphere Model

    Solid Sphere Model
    Discovered by John Dalton, it was the first atomic model that proved that an atom is a solid sphere that cannot be broekn down into smaller pieces.
    http://thehistoryoftheatomicmodel.weebly.com/the-solid-sphere-model.html
  • John Dalton

    John Dalton
    Dalton released the concept od Daltons Law of Partial Pressures.
  • Michael Faraday

    Michael Faraday
    Discovered the electromagnetic rotation which would then develop into the electric motor. Also discovered benzene in 1825.
    http://www.famousscientists.org/michael-faraday/
  • JJ Thompson

    JJ Thompson
    JJ Thompson is a British physist who discovered the electron through many experiments relating to the study of the nature of electric discharge in a high vaccum cathode-ray tube.
  • Max Planck

    Max Planck
    Planck was able to conclude the relationship between the energy and the frequency of radiation.
    http://www.nobelprize.org/nobel_prizes/physics/laureates/1918/planck-bio.html
  • Marie Curie

    Marie Curie
    First woman to win a Nobel Piece Prize and only woman to win an award in both physics and chemistry.
  • Henri Becquerel

    Henri Becquerel
    Best known for his work on radioactivity, and won a Nobel Piece Prize for his work.
    http://www.biography.com/people/henri-becquerel-40055
  • Plum Pudding Model

    Plum Pudding Model
    Created by JJ Thompson, it was a model of an atom that contains electrons.
  • Ernest Rutherford

    Ernest Rutherford
    Awarded the Nobel Piece Prize in chemistry for his theory of atomic structure. Also anmed the "Father of the Nuclear Age".
  • Planetary Model

    Planetary Model
    A more in depth model of the atom, containing a nucleus. http://www.britannica.com/science/Rutherford-atomic-model
  • Quantum Mechanical Model

    Quantum Mechanical Model
    Proves that it is impossible to know the exact position and momentum of an electron at the same time.
  • Lisa Meitner

    Lisa Meitner
    Meitner discovered a new radioactive element called protactinium.
  • Albert Einstein

    Albert Einstein
    Developed the general theory of relativity, and was considered for the most influencial physist.
    http://www.biography.com/people/albert-einstein-9285408
  • Niels Bohr

    Niels Bohr
    Won a Nobel Piece Prize in physics for working on the Manhatten Project. He was also called responsible for coming up with the revoluntionary theory on atomic structures and radiation emmission.
  • Robert A. Millikan

    Robert A. Millikan
    Robert Millikan was best knwon for his accomplishment of measuring the charge of the electron, which won a Nobel Piece Prize.
  • Louis DeBroglie

    Louis DeBroglie
    Famous for working on the quantum theory. Also, discovered the wave nature of electrons and proved that all matter has wave properties.
    http://www.famousscientists.org/louis-de-broglie/
  • The Electron Cloud Model

    The Electron Cloud  Model
    A model descriving where the model had gone and where it will most likely travel to.
    http://www.regentsprep.org/regents/physics/phys05/catomodel/cloud.htm
  • Ernest Schrodinger

    Ernest Schrodinger
    In 1926, he formulated a wave equation that accuratlely gave the energy levels of atoms.
  • James Chadwick

    James Chadwick
    Discovered the neutron and was awarded the Nobel Piece Prize because of it.
    http://www.famousscientists.org/james-chadwick/
  • Otto Hahn

    Otto Hahn
    Disocvered the nuclear fission, and was then rewarded with a Nobel Piece Prize.
    http://www.biography.com/people/otto-hahn-9325003
  • Glen T. Seaborg

    Glen T. Seaborg
    Discovered the element that makes atomic bombs explode. Also discovered radioistopes used to treat cancer patients.
    http://www2.lbl.gov/Publications/Seaborg/bio.htm