Atom Timeline Project

Events

Greek philosopher Democritus says that atoms, the smallest piece of matter, exist

460 B.C.

Declaration of Independence

July 4, 1776

Discovery of Uranus

Approx. 1781

1803 Louisiana Purchase

1803

The atomic theory was developed by John dalton, an English chemist

1803

World Population reaches one billion

1804

Discovery of Antartica

1820

Dmitri Mendeleev a Russian chemist created the first version of the periodic table of elements

1869

JJ Thompson an English chemist discovers charge subatomic particles

1897

JJ Thomson discovered the electron

1897

Wright Brothers first airplane

1903

Ernest Rutherford discovers the existence of the proton which holds the atomic mass

1911

Ernest Rutherford discovers the nucleus

1911

English Radioactive chemist Frederick Soddy discovers isotopes

1913

Ford makes modern assembly line

1913

World War 1 begins

1914

World War 1 Ends

1918

Erwin Schrodinger discovers the existence of the electron cloud into levels

1926

Austrian Physisct Erwin Schrödinger creates the quantum mechanical model

1926

Great Depression begins

1929

English chemist James Chadwick discovers the neutron

1932

Hitter rises to power

1933

Grandpa born

1937

Nuclear Fission discovered

1938

Invasion of Poland by Germany

1939

World War 2 Ends

1945

Cold War begins

1947

First artificial satellite is launched by russians

1957

Mom is born

1965

Man walks on moon

1969

Internet is Born

1969

Berlin Wall falls

1989

I was born

2000

Attack on World Trade Center

September 11, 2001

First day of high school

2015