Atom Through Time By s-czigman Period: Jan 1, 1800 to Jan 1, 1950 Atoms Through Time Jan 1, 1832 John Dalton Jan 1, 1897 J.J. Thomson Jan 1, 1905 Albert Einstein Jan 1, 1909 Robert Millikan Jan 1, 1911 Ernest Rutherford Jan 1, 1913 Neils Bohr Jan 1, 1926 Erwin Schrödinger