Atomic theory

Atomic Theory

By MyrandaLeannnn
  • 400

    Democritus

    Democritus
    Founded the atom

  • Whilhelm Roentgen

    Whilhelm Roentgen
    Discovered the X-Ray

  • J.J. Thomson

    J.J. Thomson
    He was experimenting the interior of an atom when he discovered that there are very small pieces of atoms inside an atom, which he called “corpuscles”.

  • Ernest Rutherford

    Ernest Rutherford
    Discovered that the nucleus has a positive charge and it it very dense

  • Francis William Aston

    Francis William Aston
    Discovered isotopes

  • James Chadwick

    James Chadwick
    Proved the existence of a neutron

  • John Douglas

    John Douglas
    Split the first atom
    -Lead to the atomic bomb that ended World War II

  • First Atomic Bomb dropped

    First Atomic Bomb dropped
    Finished World War II

  • Karl Ferdinand Braun

    Karl Ferdinand Braun
    Invented the first cathode ray tube
    - A vacuum tube that is used to veiw images and is used to make X-Rays.