Atomic Theory Timeline

By cayley10
  • 465

    Democritus

    Democritus
    He made the the formula for the atomic theory
  • 470

    Aristotle

    Aristotle
    He added fire, water, earth and air.

  • Dalton

    Dalton
    He added the things to make an atom.

  • Thompson

    Thompson
    He added positive and negative charges.

  • Bohr

    Bohr
    He made a model of the atomic theory.

  • Rutherford

    Rutherford
    He proved that alpha radiation was helium.