Atomic theory

Atomic Theory

By MyrandaLeannnn
  • Democritus
    400

    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.