Atomic Timeline

democritus

430

Discovered the atom

Antoine Laviosier

Oct 30, 1789

figured out that although matter may change its form or shape, its mass always remains the same.

John Dalton

Oct 30, 1803

created Dalton’s Atomic Theories

W.K. Roentgen

Oct 30, 1895

discovered Xrays

Henri Becquerel

Oct 30, 1896

Discovered Radioactivity.

J.J. Thomson

Oct 30, 1897

created the plum pudding model and preformed the cathode ray tube experiment.

Marie Curie

Oct 30, 1898

discovered Polonium and Radium

Max Planck

Oct 30, 1900

founder of the quantum theory

Hans Geiger

Oct 30, 1906

He made a machine that could shoot light through gold foil.

Robert Milikan

Oct 30, 1909

preformed the Oil Drop Experiment

Ernest Rutherford

Oct 30, 1911

Preformed the gold foil experiment

Neils Bohr

Oct 30, 1922

created Bohr's Planetary Model

Werner Heisenberg

Oct 30, 1927

figured out that by measuring an electron's properties by hitting it with gamma rays would change the electron's behavior

Erwin Schrodinger

Oct 30, 1930

Came up with the Quantum Mechanical model

James Chadwick

Oct 30, 1932

Discovered Neutrons

Enrico Fermi

Oct 30, 1942

discovered that nuclear transformation occurs in almost every element when bombarded with neutrons

The Greeks

Oct 30, 2000

The greeks came up with such sciences and mad a large impact on all future discoveries.