History Of The Atom

John Dalton

Sep 5, 1766

Born

Dalton's Discovery

1803

Dalton made the discovery that every atom of an element is the same as every other atom of that element and that the atoms of one element are different from the atoms of other elements.

John Dalton

Jul 27, 1844

Death

JJ Thomson

Dec 18, 1856

Born

Robert Millikan

Mar 22, 1868

Born

Ernest Rutherford

Aug 30, 1871

Born

Niels Bohr

Oct 7, 1885

Born

Erwin Schrodinger

Aug 12, 1887

Born

James Chadwick

Oct 20, 1891

Born

Thomson's discovery

Apr 30, 1896

Thomson discovered the electron, tiny negatively charged particles in the atom

Millikan's Discovery

1909

Discovered how much of an electric charge is in one electron

Rutherford's Discovery

1911

Found that the atom is empty for the most part outside of the tiny nucleus.

Niels Bohr's Discovery

Mar 6, 1913

Found that the electron is only able to take up space outside of the nucleus

Schrodinger's Discovery

1926

Made an equation that found the energy levels of electrons in atoms.

Chadwick's Discovery

Feb 17, 1932

Discovered the neutron and discovered the weight was the same as a proton.

Ernest Rutherford

Oct 19, 1937

Death

JJ Thomson

Aug 30, 1940

Death

Robert Millikan

Dec 19, 1953

Death

Erwin Schrodinger

Jan 4, 1957

Death

Niels Bohr

Nov 18, 1962

Death

James Chadwick

Jul 24, 1974

Death