Atomic Theory scientists

By samira
  • newton

    discovers theory of light and colour, Proposed a mechanical universe with small solid masses in motion.
  • dalton

    Has the idea of fixed ratio combinations and valencies.
  • G.J. Stoney

    discovers electricity is made of negative particles- electrons.
  • J.J. Thomson

    creates a model of a solid atom- negatively charged electrons are embedded in a positive sphere.
  • Planck

    Quantum theory-interaction between matter and radiation.
  • Nagaoka

    discovers that electrons revolve around the positively charged centre of the atom.
  • Milikan

    discovers the measurement of the charge of an electron.
  • E. Rutherford

    Described the atom as having a central positive nucleus surrounded by negative orbiting electrons. Gold foil experiment.
  • H.G.J. Mosely

    finds out that all positive charges are in the atom.
  • Bohr

    Depicts the atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus with electrostatic forces providing attraction.
  • James Chadwick

    Discovered the neutron.