Atomic Theory

Thomson: The discovery and identification of the electron.

Nov 21, 1897

Bohr: He found out that electrons orbit around the nucleus. Also that each electron has a certain amount of energy

Nov 21, 1900

Dalton: Daltons atomic theory proposed taht all matter was composed of atoms, indivisble and indestructible buliding blocks.

Nov 21, 1903

Daltons atomic theory proposed taht all matter was composed of atoms, indivisble and indestructible buliding blocks.

Robert Millikan: He measured of the elementary electronic charge

Nov 21, 1910

Rutherford: He found out that atoms are mostly made up of space. Some particles where deflected by the gold foil. He concluded that the atom had a small positively charged dense center. He called the nucleus

Nov 21, 1911

Werner Heisenberg: Creation of quantum mechanics. (Which is the branch of mechanics that deals with the mathematical description)

Nov 21, 1927

James Chadwick: Discovery of the neutron.

Nov 21, 1932

Hantaro Nagaoka; He thought that electrons couldn't be located in the positively charged atom

Nov 21, 2014