The Science of the Atom

Aristotle

350

(350 BC) He believed that all things found on earth were madeat least one of four elements; Earth, Fire, Water, and Air

Democritus

400

(400 BC) He made the atomic theory for the universe.

Columbus reaches the new world

Oct 5, 1492

Boston Tea Party

Oct 5, 1773

http://www.history.com/this-day-in-history/the-boston-tea-party

Antonie Lavosier

Oct 5, 1778

Most noted for his discovery in the role oxygen plays in combustion

Joseph Proust

Oct 5, 1779

Best known for discovering the law of constant composition

Russia settled Alaska

Oct 5, 1784

John Dalton

Oct 4, 1800

Was the first to suggest the idea of an atom. Created a more accurate Atomic Theory which is still valid today.

Amadeo Avagadro

Oct 5, 1800

Best known for his contribution to molecular theory which is now known as Avogadro's law

Battle of Anteatem

Oct 5, 1862

http://www.history.com/this-day-in-history/battle-of-antietam

William Crookes

Oct 4, 1880

Discovered Thallium, studied cathode-ray, and fundamental in the development of atomic studies.

Geranamo Surrenders

Oct 5, 1886

J.J. Thomson

Oct 4, 1897

He is credited with being the first to find electrons and the first subatomic particle

Max Planck

Oct 5, 1897

An originator of the quantom theory

Henri Becquerel

Oct 5, 1903

He was the first person to discover radioactivity which is named Becquerel in the periodic table

Albert Einstein

Oct 5, 1905

Developed the theory of general relativity and worked with quantum mechanics

Henry Moseley

Oct 5, 1908

His contribution to the science of physics was the justification from physical laws of the previous empirical and chemical concept of the atomic number.

Madame Curie

Oct 5, 1910

Worked with radioactivity and developed the theory of radioactivity

Ernest Rutherford

Oct 4, 1911

He carried out the Geiger–Marsden experiment, which demonstrated the nuclear nature of atoms by deflecting alpha particles passing through a thin gold foil also was the first to discover atoms have a small charged nucleus surrounded by empty space

Amundson reaches the south pole

Oct 5, 1911

Niels Bohr

Oct 5, 1913

He created the Bohr model of an atom and won a nobel prize for his reaserch and understanding of the quantom theory and atomic structure also proposed a theory for the hydrogen atom based on quantum theory that energy is transferred only in certain well defined quantities

Robert Millikan

Oct 4, 1923

He was honored with the Nobel Prize for Physics in 1923 for his measurement of the elementary electronic charge and for his work on the photoelectric effect

Erwin Schrodinger

Oct 5, 1926

Created a powerful model of the atom

Louis de Broglie

Oct 5, 1929

Discovered the wave nature of electrons

James Chadwick

Oct 5, 1932

Discovered the Neutron and also created an unknown radiation through elements

Werner Heisenberg

Oct 5, 1932

He devised a method to formulate quantom mechanics in terms of matrices

Nuremberg trials begin

Oct 5, 1945

http://www.history.com/this-day-in-history/nuremberg-trials-begin

LBJ sends troops to Alabama

Oct 5, 1965

http://www.history.com/this-day-in-history/lbj-sends-federal-troops-to-alabama

Patty Hearst was kidnapped

Oct 5, 1974

http://www.history.com/this-day-in-history/patty-hearst-kidnapped

President Ford pardons Nixon

Oct 5, 1974