Timeline of the history of the atom

HISTORY OF THE ATOM

TIMELINE OF THE

John Dalton

was the first complete attempt to describe all matter in terms of atoms and their properties

1766- 1844

J.J. Thomson

experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons

1856- 1940

Ernest Rutherford

is known for his pioneering studies of radioactivity and the atom

1871- 1937

Niels Bohr

The Bohr model shows the atom as a small, positively charged nucleus surrounded by orbiting electrons

1885- 1962

Erwin Schrödinger

The Schrödinger model assumes that the electron is a wave and tries to describe the regions in space, or orbitals, where electrons are most likely to be found.

1887- 1961