Atomic Theory Timeline

  • Antoine Lavoisier

    Antoine Lavoisier
    recognized oxygen as an element, and coined its name which comes from a Greek word that means acid-former.
  • John Dalton

    John Dalton
  • James Maxwell

    James Maxwell
    best known for his research in electromagnetic radiation, which unites the sciences of electricity, magnetism and optics.
  • JJ Thompson

    Studied "canal rays" and found they were associated with the proton H + .
  • Marie Curie

    Marie Curie
    was a physicist and chemist famous for her pioneering research on radioactivity
  • Ernst Rutherford

    Ernst Rutherford
    He discovered the nucleus and the gold foil experience.
  • Henery Moseley

    Henery Moseley
    published the results of his measurements of the wavelengths of the X-ray spectral lines of a number of elements which showed that the ordering of the wavelengths of the X-ray emissions of the elements coincided with the ordering of the elements by atomic number
  • Neils Bohr

    Neils Bohr
    Bohr said that electrons traveled in circular orbits around the nucleus, yes their is a difference between an orbit and an orbital.
  • Erwin Schrodinger

    Viewed electrons as continuous clouds and introduced "wave mechanics" as a mathematical model of the atom.
  • James Chadwick

    Using alpha particles discovered a neutral atomic particle with a mass close to a proton. Thus was discovered the neutron.
  • Aristotle

    Before Christ.
  • Werner Heisenberg

    Described atoms by means of formula connected to the frequencies of spectral lines. Proposed Principle of Indeterminancy - you can not know both the position and velocity of a particle.