Famous Dead Guy By Darbi.Brown 101 Thales- 624-524BC Thought everything was made of water 102 Democritus- 460BC Created the idea of the atom. Thought it was a round ball. NO experiments! 103 Aristotle- 384-322BC Believed that all substances were made of the four elements fire, water, earth, and air. Oct 7, 1702 Sir Issac Newton Matter is solid, massy, and impenatrable. Oct 7, 1802 John Dalton Supported the Atomic Theory "Law of Fixed Proportions." First person to have experimental evidence. Oct 7, 1897 Herri Becquerel Discovered Radioactivity anf the Atomic Theory. Oct 7, 1909 Ernest Rutherford Discovered the nucleus Oct 7, 1912 Millikan 1909-1912 Found the charge of an electron. Oct 7, 1916 Niels Bohr 1911-1916 Thought that electrons orbited around the nucleus. Oct 7, 1926 Schrodingers His atomic model was the quantum mechanical model predicts the odds of electron cloud. Oct 7, 1932 James Chadwick Proved the existance of newtrons.