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310
Aristotle
Believed that earth, water, fire, air, aether made up matter. -
Antonie Lavosier
Publishes method of Nomenclature, the first modern system of chemical nomenclature. -
Joseph Proust
Created elements from water. Joseph also created the law of definite proportions. -
John Dalton
Through his interest in metorology, he calculated atomic weights and determined atomic structure of each compound. -
Amadeo Avagadro
Created an experimental gas law, relating volume of a gas to the amount of substance present. -
Civil War
This is the year that the civil war began in the United States. -
Civil War Ends
After many years of fighting, the Civil War finally ended. -
William Crooks
Investigated cathode rays, and also studied spectroscopy. He studied, what is now called plasmas, the fourth state of matter. He also discovered the element thallium. -
Games
In this year, the game of volleyball was invented. -
Henri Becquerel
Experimented with Uranium salts, that may have led to penetrating x-ray-like radiation. Henri also discovered many different elements. -
J.J. Thomson
Discovered the electron by estimating the mass of the cathrode rays. -
Madame Curi
Studied radiation and is well-known for having died of radiation poisoning because she did not know the effects that it had on the body. -
Robert Millikan
Robert studied the charge of the electron. Used the oil-drop experiment to measure the charge of the electrons by using water. -
Ernest Rutherford
He proved the nuclear model of the atom, which he recreated his own model of, adding the electron cloud, which is made up of valanve electrons. -
Henry Moseley
Introduced the idea of atomic number which fixed Mendelev's periodic table, which used to be based on atomic weight. -
Niels Bohr
Proposed, which is now known as the Bohr model of the atom, where electrons exist only in specific orbitals. -
World War One
In this year, the alliances formed and a global war broke out. -
Max Planck
Originated the quantum theory. -
World War One
The global fight finally ended in 1918. -
Treaty of Versailles
In 1919, the Treaty of Versailles was made and signed. -
Albert Einstein
Explained the motion of molecules, laid the foundation of the photon theory of light, special theory of relativity. Albert is also well-known for his E=MC^2 equation. -
Louis de Broglie
Studied the wave nature of electrons. -
Erwin Schrodinger
Created the Schrodinger equation of the relativistic doppler effect for spectro lines; wave mechanics. -
Werner Heisenberg
Developed the uncertainty principal. -
James Chadwick
Discovered the neutron. -
World War Two
This is the year that the world war began once again; known more for the Holocaust. -
D-Day
In this year, the Americans flooded the shores of Normandy where they finally broke through the German military to take a lead in the second world war. -
World War Two
FInally, after ruthless fighting, the second world war came to an end. -
9/11
The war on terror began in 2001 after the terrorist attacks that occured--the plane crash at the Twin Towers and the Pentagon.
