Taylor Irwin's Timeline By fhschemistry 460 Democritus Philosopher Sep 6, 1766 John Dalton Jun 17, 1832 William Crookes Feb 7, 1834 Dmitri Ivanovich Mendeleev Nov 26, 1837 Newlands, John Dec 18, 1856 Sir J.J. Thomson Aug 30, 1871 Rutherford, Ernest Oct 7, 1885 Niels Bohr Danish Mar 2, 2022 Aristotle