Atomic Timeline Project

John Dalton published his theories of the Modern Atomic Theory

Oct 17, 1803

Dalton formed the Atomic Theory which is that all matter is composed of indivisible particles called atoms.

J.J Thomas founded electons

Oct 17, 1897

Thomas found electrons with the Cathode Ray Experiment,

Ernest Rutherford's Gold Foil Experiment

Oct 17, 1909

Rutherford's experiment found that nucleuses have a posittive charge and atoms are most likely a empty space.

Neils Bohr model was propsed; The Bohr Model

Oct 17, 1915

In the Bohr Model the neutrons and protons occupy the nucleus, and the electrons orbit the nucleus.

James Chadwick discovered the neutron

Oct 17, 1932

James Chadwick continued on Rutherford's work which led him to the discovery of the neutron using a new type of radiation.

Modern Atomic Model

Oct 17, 2012

The atom is the smallest unit of an element that still behaves like the entire element, but that's not to say that the smaller parts do not exist.