Contributes to the Atomic Theory

By McK3nna
  • Olymipics
    776 BCE

    Olymipics

    The first Olympics started in 776 BC and lasted till 393 AD, it took 1503 years for the Olympics to return
  • Democritus
    400 BCE

    Democritus

    Came up with a formulation of an atomic Theory of the Universe.
  • Aristotle
    340 BCE

    Aristotle

    He didn't believe in atoms and he thought that earth material was not made out of atoms.
  • Joseph Proust

    Joseph Proust

    Stated the Law of Definite Proportions
  • Antonie Lavoisier

    Antonie Lavoisier

    Came up with Law of Conservation
  • John Dalton

    John Dalton

    Atomic Theory said that all matter is made of atoms and atoms are indivisible and indestructible. Also states that all atoms of a element are the same as mass and properties.
  • Louisiana Purchase

    Louisiana Purchase

    was a land deal between the United States and France, in which the U.S. acquired approximately 827,000 square miles of land west of the Mississippi River for $15 million.
  • Amadeo Avagadro

    Amadeo Avagadro

    Made a hypothesis that equal volume from gases at the same temperature and pressure and it contains same amount of molecules
  • Walter Hut

    Walter Hut

    Walter Hut made the first Saftey Pin, which is used to hold things together
  • Mason Jar

    Mason Jar

    John Landis Mason crated the first mason jar and he named the jar after himself
  • Game Board

    Game Board

    Milton Bradley made the first game board and it was used to past time
  • William Crookes

    William Crookes

    He discovered thallium and continued to work on that new element and he isolated it and studied it. In 1873 the discovered its atomic weight. He discovered the principle of Crookes radiometer that converts light radiation in rotary motion, this is used later as a measuring tool.
  • Telephone

    Telephone

    Alexander Grahm Bell made the first telephone
  • Albert Einstein

    Albert Einstein

    Discovered radioactivity which later contributed with the atomic theory.
  • Henri Becquerel

    Henri Becquerel

    Discovered radioactivity which was contributed to the atomic theory.
  • J.J Thomson

    J.J Thomson

    He discovered the electron by experimentsing with things
  • Madame Curie

    Madame Curie

    Discovered radium and polonium in elements
  • Ernest Rutherford

    Ernest Rutherford

    He found out that J.J Thomson's model of the atom was not right and he started to make on of this one and came to a conclusion that the atom consisted of small dense positively charged nucleus in the center of the atom with negatively charged electrons surrounding it.
  • Henry Moseley

    Henry Moseley

    Discovered the atomic battery
  • Niels Bohr

    Niels Bohr

    Made a model that showed the atom small and positivly charged nucleus that is surrounded by orbiting electrons
  • World War 1

    World War 1

    started in Sarajevo, Bosnia, where Archduke Franz Ferdinand, was shot to death along with his wife by the Serbian nationalist Gavrilo Princip on June 28, 1914
  • Max Planck

    Max Planck

    He is the origination of the Quantum Theory of energy, this helped understand the atom and subatomic process.
  • Louis de Broglie

    Louis de Broglie

    He did research over the quantum theory and predicted the wave nature of electrons.
  • Robert Milikan

    Robert Milikan

    Had an oil drop experiment that helped quanitfy the charge of an electron, which has contributed greatly to our understanding of the atom
  • Werner Heisenberg

    Werner Heisenberg

    He is associated with the quantum theory, which is the discovery of allotropic forms of hydrogen.
  • Erwin Schrodinger

    Erwin Schrodinger

    Developed a Electron Cloud Model, which consisted of a dense nucleus surrounded by a cloud of electrons at different levels of orbitals.
  • James Chadwick

    James Chadwick

    He discovered the neutron
  • Manhattan Project

    Manhattan Project

    research and development project that produced the first nuclear weapons during World War II.
  • Vietnam War

    Vietnam War

    North Vietnam and its southern allies, against South Vietnam and its principal ally, the United States.
  • John F. Kennedy

    John F. Kennedy

    HE was killed