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Volcano erupts and covers Pompeii and Herculaneum
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The Great Wall of Chine begins to be built
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Aristotle
Born: 384 BC
Died: 322 BC
Hometown: Stagira, Greece
Year of contr: 342 BC
Contr: Believed that everything on earth was made up of all four elements and not atoms. -
The first model of the atom was just a small, invisible, ball.
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Democritus
Born: 460 BC
Died: 370
Hometown: Abdera, Greece
Year of contr: 400 BC
Contr: Theory that everything is made of atoms. (Atomic theory) -
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Thales
Born: Pre-Socratic
Died: 545 BC
Hometown: Miletus, Turkey
Year of contr:
Contr: Discovered Ursa Minor, developed crude telescope, and set the solstice. -
Nicholas Copernicus
Born: February 19, 1473
Died: May 24, 1543
Hometown: Toruń, Poland
Year of contr: May 24, 1543
Contr: Proposed a heliocentric planetary set up. -
Georg Bauer
Born: March 14, 1494
Died: November 21, 1555
Hometown: Glauchau, Germany
Year of contr:
Contr: presented the first scientific classification of minerals (based on their physical properties) and described many new minerals, their occurrence and mutual relationships. -
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Sir Isaac Newton
Born: January 4, 1643
Died: March 31, 1727
Hometown: Woolsthorpe by Colsterworth, United Kingdom
Year of contr: 1687
Contr: Law of Universal Gravitation, 3 Laws of motion, and discovered white light and colors. -
Charles Augustin de Coulomb
Born: June 14, 1736
Died:August 23, 1806
Hometown: Angoulême, France
Year of contr: 1785
Contr: Coulomb’s law of electrostatic force of attraction and repulsion, worked on friction. -
Antoine Lavoisier
Born: August 28, 1743
Died: May 8, 1794
Hometown: Paris, France
Year of contr: 1772-1794
Contr: Developed Law of Conservation of Mass, named modern system for naming chemical substances, developed base theory of chemical reactivity of oxygen. -
John Dalton
Born: September 6, 1766
Died:July 27, 1844
Hometown: Eaglesfield, Cumbria, UK
Year of contr: 1808
Contr: Researched color blindness and worked in developing the atomic theory -
The metric System is introduced to France.
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Napoleon becomes crowned emperor of France.
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Mary Shelly writes Frankenstein.
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James Clerk Maxwell
Born: June 13, 1831
Died: November 5, 1879
Hometown: Edinburgh, UK
Year of contr: 1846
Cont: Created a dynamic theory of the electromagnetic field -
Disease spread across Ireland and kills potato plant.
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J.J. Thomson
Born: December 18, 1856
Died: August 30, 1940
Hometown: Cheetham HIll, Manchester, UK
Year of contr: 1886
Contr: Publishes Treatise on the Motion of Vortex Rings, Application of Dynamic Physics and Chemistry, and Notes on Recent Research in Electricity and Magnetism -
Robert Millikan
Born: March 22, 1868
Died: December 19, 1953
Hometown: Morrison, IL, USA
Year of contr: 1910
Contr: Found the charge of the electron,worked on photoelectric effect. -
Ernest Rutherford
Born: August 30, 1871
Died: October 19, 1937
Hometown: Brightwater, New Zealand
Year of contr: 1917
Cont: Converted nitrogen to oxygen, split the 1st atom -
General Custer's last stand. Custer splits his troops and is massacred by the Native Americans.
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Boy is bitten by a rabid dog and Louie Pasteur invents a vaccine for rabies.
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Niels Bohr
Born: October 7, 1885
Died: November 18, 1962
Hometown: Copenhagen, Denmark
Year of contr: 1912
Contr: Absorption on alpha rays and Rutherford’s discovery are simplified for lectures -
James Chadwick
Born: October 20, 1891
Died: July 24, 1974
Hometown: Bollington, UK
Year of contr: 1932
Contr: Proved existence of neutron -
An American ship off the coast of Cuba explodes and America starts war with Spain in Cuba.
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Werner Heisenberg
Born: December 5, 1901
Died: February 1, 1976
Hometown: Würzburg, Germany
Year of contr: 1925
Cont: Created the theory of quantum mechanics. -
Fritz Strassmann
Born: February 22, 1902
Died: April 22, 1980
Hometown: Boppard, Germany
Year of contr: 1938
Contr: Discovered neutron induced nuclear fission in uranium. -
Ernest Walton
Born: October 6, 1903
Died: June 25, 1995
Hometown: Abbeyside, Republic of Ireland
Year of contr: 1960
Contr: Worked on indirect methods of producing fast particles, worked on the linear accelerator (betatron), and specialty in hydrodynamics -
The Wright brother fly the first airplane
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The model gets the name because the diagram looks like a plum. The entire atom is a positive ball while the electrons are on the inside like seeds.
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Luis Alvarez
Born: June 13, 1911
Died: September 1,1988
Hometown San Francisco, CA, USA
Year of contr: 1937
Cont: 1st experimented demonstration of K-electron capture by nuclei. -
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The nuclei is in the center while the electrons spin around the nuclei on its orbital just like how the earth goes around the sun and rotates on its axis.
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Both are models of atoms but Rutherford's atom shows the electrons anywhere while Bohr's model had more structure and shows that the electrons follow a path.
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The beginnings of WWI
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There is a nucleus in the middle and the electrons are scattered all around it.
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George Zweig
Born: May 30, 1937
Current Age: 79
Hometown: Moscow, Russia
Year of contr: 1946
Contr: proposed existence of subatomic particles, quarks. -
The United States dropped and atomic bomb in Hiroshima, Japan.
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Craig Venter
Born: October 14,1946
Current Age: 69
Hometown: Salt Lake City, UT, USA
Year of contr: 2001
Cont: He was apart of the sequencing analysis of the human genome. -
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Apartheid in South Africa has ended.
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The war with Afghanistan begins to wind down as American troops are being pulled out.
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The Editors of Encyclopedia Britannica. "Thales of Miletus." Encyclopedia Britannica Online. Encyclopedia Britannica, 12 Jan. 2015. Web. 14 Oct. 2016. Amadio, Anselm H., and Anthony J.P. Kenny. "Aristotle." Encyclopedia Britannica Online. Encyclopedia Britannica, 3 Feb. 2016. Web. 14 Oct. 2016. Siyavula. "Models of the Atom." Everything Maths and Science. Siyavula, 16 Sept. 2015. Web. 14 Oct. 2016.
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Duignan, Brian. "Democritus." Encyclopedia Britannica Online. Encyclopedia Britannica, 13 Feb. 2015. Web. 14 Oct. 2016. "Georgius Agricola". Encyclopædia Britannica. Encyclopædia Britannica Online. Encyclopedia Britannica Inc., 2016. Web. 14 Oct. 2016 Westfall, Richard S. "Isaac Newton." Encyclopedia Britannica Online. Encyclopedia Britannica, 17 Aug. 20216. Web. 14 Oct. 2016.
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Gill N.S. "The When and Where of Major Events in Ancient History." About.com Education. About Education, 16 Dec. 2014. Web. 14 Oct. 2016. Anonymous. "World History AD Timeline." World History AD Timeline. Fincher, 30 Apr. 2016. Web. 14 Oct. 2016. "Luis Alvarez - Biographical". Nobelprize.org. Nobel Media AB 2014. Web. 14 Oct 2016.
