Different scientists

By Cassandra Alte
  • 1913 BCE

    Bohr

    Bohr
    Depicts the atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus-similar to the structure of the solar system, but with attraction provided by electrostatic forces.
  • 1909 BCE

    Rutherford

    Rutherford
    Suggested that his 1911 analysis, that J.J Thomason's plum pudding model was incorrect. It shows that an atom is mostly empty space, with electrons orbiting a fixed, positively charged nucleus in set. Helped get. Loser to the final piece/atom.
  • 1897 BCE

    Thomson

    Thomson
    Discovered the electron in 1897. Proposed plum pudding model of the atom in 1904 before the atomic nucleus, in order to include the electron in the model. The atom is composed of electrons.
  • 1800 BCE

    Dalton

    Dalton
    Proposed that all matter is composed of very small things, which he called atoms. When he proposed his music deal electrons and the nucleus were still unknown.
  • 400 BCE

    Democritus

    Democritus
    Round sphere with no electrons, protons, or neutrons. First atomic model. Helped people with understanding the idea of an atom and helped other scientists find more informations. He was the start if he experiment.