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Democritus
Created the introduction to atomic theory. (640 BC)John Dalton
He stated that all matter was composed of atoms. (1766)Dmitri Mendeleev
He was the first to make the periodic table close to modern day designs (1869)JJ Thomson
They put two wires and pumped the air out. Between them, the tube glowed. This is similar to a neon sign. He discovered the electron. (1912)Robert Millikan
He put a drop of oil and determined the charge based upon how much was required to keep it suspended. (1909)Ernest Rutherford
He was responsible for the gold foil experiment. He shot things at gold foil and discovered they were not always lined up properly. This lead to the discovery of the nucleus. (1899)Henry Moseley
He was responsible for the atomic battaery. (1912)Niels Bohr
Proposed electrons can jump around but only in prescribed orbits. (1913)Louis deBroglie
He introduced the idea that particles coult aldo be waves. (1924)Erwin Schrodinger
He created the modern view of the atom as we know it today. (1926)James Chadwick
He discovered gamma rays using Beryllium. (1932)WW1 Begins
(1914)WW2 Begins
(1939)American Civil War Begins
(1861)First Modern Olympics
(1896)Chicago World's Fair
(1893)
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