History of the atom

By lmarble
  • Democritus
    400 BCE

    Democritus

    All matter has atoms. Atoms are indestructible. Atoms are invisible.
  • John Dalton

    John Dalton

    Elements have tiny particles called atoms. Atoms in the same element have the same mass.
  • Joseph John Thompson

    Joseph John Thompson

    Wrote a books called Treatise on the Motion of Vortex Rings in 1884. Discovered electrons by cathode rays. Created the plum pudding model.
  • Ernest Rutherford

    Ernest Rutherford

    Atoms are in every living thing. Discovered the inner atom.
  • Niels Bohr

    Niels Bohr

    Looked at the structure of atoms.