The history of the Atom

John Dalton

Sep 6, 1766

(1766 - 1844) Discovered five different theories about the Atom, most of which are still correct. He produced his own model of the Atom

JJ Thomson

Dec 18, 1856

(1766 - 1844) Experimented with charges nad discovered positive and negative charges and created his own model of the Atom

Ernest Rutherford

Aug 30, 1871

(1856 - 1937) Discovered that JJ Thomson's model of the Atom was incorrect and produced his own model of the Atom.

Niels Bohr

Oct 7, 1885

(1885 - 1962) Disovered Rutherford's model of the Atom was incorrect and produced his own model of the Atom.

James Chadwik

Oct 20, 1891

(1891 - 1974) Proved Bohr's model of the Atom to be incorrect and produced the current model of the Atom.