History of the Atom

  • 460 BCE

    Democritus

    Democritus
    Democritus found the atomic theory of the universe in 460 BC the experiment he used gave him an idea of atoms. other accomplishments were him as the laughing philosopher
  • Antonie Lavoisier

    Antonie Lavoisier
    Came up with the study of Chemistry and History of Biology, Made up the Law of Conservation energy, and was known for Combustion and Configuration of street lights
  • John Dalton

    John Dalton
    Become with the Atomic Theory, used gases to show and prove that atoms can't be broken up, and had the success of the Atomic Theory that we still use today
  • Albert Einstein

    Albert Einstein
    Einstein published an analysis in which he devised a mathematical way to predict the size of both atoms and molecules. Einstein also created the theory of relativity. He never wore socks cause socks were a pain and got holes. was also asked to be the president of Israel.
  • Niels Bohr

    Niels Bohr
    Bohr created the model of the atom, Bohr also did experiments over hydrogen molecules where a positive nucleus is surrounded by protons and neutrons. He then went on to win the Nobel Prize in physics in 1922
  • Max Planck

    Max Planck
    Planck was the inventor of the quantum theory, came up with photons, one photon carries one quantum of energy. made the plancks constat ( e=nhf where h is constant) Planck also won the nobel prize in Physics in 1918.
  • Louis De Brogile

    Louis De Brogile
    Developed the Brogile Hypothesis, where wave nature of electrons all have wave properties. He was awarded the Nobel Prize in physics in 1929
  • Werner Heisenberg

    Werner Heisenberg
    key pioneer of quantum mechanics,more precisely the position of particle, less precisely its momentum can be known and vice versa. Published the uncertain principle and theory of quantum mechanics. He was a school teacher and was captured by American soldiers during world war 2 and then was sent to England.
  • Erwin Schrodinger

    Erwin Schrodinger
    Quantum theory, Basis of wave mechanics, formulated the wave equation/ wave function. Used mathematical equations to describe the likehood of finding and electron in a certain position. Known has the father of quantum physics. a moon crater is named after him
  • James Chadwick

    James Chadwick
    Chadwick discovered neutrons in atoms and neutrons have the same mass as protons. discovered subatomic particles using a neutron chamber in one of his experiments.
  • Marie Curie

    Marie Curie
    She found out how Radioactivity work and found an element "radium" from it, also got multiple Noble Prizes because of her findings.
  • Ernest Rutherford

    Ernest Rutherford
    Found the Nucleus of a cell used that to make the first atomic model, and used the Gold Foil Experiments.
  • J. J. Thomson

    J. J. Thomson
    Discovered the Electron, he used Cathode Ray tubes to find the electrons and came up with the First Subatomic Particle.
  • Rovert Milikan

    Rovert Milikan
    Found out what charge the electron had, got the answer from using the oil drop experiment, and got the Noble Prize in Physics.