Atomic Theory Timeline-Brittnie Wratchford & Alicia Casner

Timeline created by wratchfordb
  • Aristotle

    Aristotle
    Developed a theory that matter consisted of water, fire, earth and fire. He thought that no matter how many times you cut a form of matter in half, you would always have a smaller piece of that matter. (The date was very long ago around 315 BC and too old to put on the timeline. Thats why the date is 1800)
  • Joseph Proust

    Joseph Proust
    Found that hygrogen is the lightest element. Thought that everything. He found that its mass number equiled one.
  • Ernest Rutherford

    Ernest Rutherford
    He discovered alpha particles. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6…
  • Robert Millikan

    Robert Millikan
    He determined the charge of an element.
  • Ernest Rutherford

    Ernest Rutherford
    Proved the wave structure of gamma radiation.
  • Ernest Rutherford

    Ernest Rutherford
    Published work with Frederic Soddy. Won a Nobel Prize.
  • Robert Millikan

    Won Nobel Prize.
  • Louis de Broglie

    Louis de Broglie
    This is when he discovered the formula that is for the wave length of an electron moving.
  • Louis de Broglie

    Louis de Broglie
    He suggested that there is a wave connected with the moving of an electron. The formula is the picture.
  • Werner Heisenberg

    Werner Heisenberg
    He created a theory called the matrix mechanics, another form of quantum mechanics. This is the modern atomic theory.
  • Max Planck

    Max Planck
    Made discovery of x-rays. The formula for this is .5x10^-8. He worked with Albert Einstein.