History of the Atom By Sebastian123456789 Period: Jan 1, 1750 to Jan 1, 2013 Scientists Aug 29, 1794 John Dalton studies color blindness Aug 29, 1802 John Dalton studies and creates the Atomic theory Sep 3, 1803 Daltons Model Aug 29, 1879 William Crooke develops crooke radiometer and vacuum tubes Aug 29, 1897 J.J Thompson discoveres the electron Sep 3, 1904 Plum Pudding atomic model Sep 3, 1909 Rutherford Model Aug 29, 1910 Ernst Rutherford discoveres concept of radioactive half-life Aug 29, 1911 Ernest Rutherford discoveres the nucleus Aug 29, 1913 J.J. Thompson finds first evidence of isotopes Sep 3, 1913 Bohr Atom Aug 29, 1917 Ernest Rutherford splitts a atom for the firs time Aug 29, 1922 Niels Bohr contibution to Atomic Structure and quantum mechanics Jan 1, 1932 James Chadwick discoveres the Neutron Sep 3, 2013 Quantum Mechanical Model
