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Jan 1, 1000
Democritus
Discovered matter was made of small particles called atoms. 400 B.C. -
Jan 1, 1000
Aristotle
Rejected Democritus's theory. (384-322) B.C. -
Antonie Lavosier
Discovered the combustion theory, conversation of mass. -
Joseph Priestly
Discovered oxygen. -
John Dalton
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Lewis and Clark expedition
Lewis and Clark started their expedition across the United States. -
Amedeo Avogadro
Avogadro's hypothesis, the same temerature and pressure, equal volume and gases contain the same numberof molecules or atoms. -
Erie Canal
The construction of the Erie Canal in New York. -
Indian Removal Act
Removal of the Indians to the west for the settlers to move in and grow crops. -
First form of photography.
Image on silver-plated copper, coated with silver iodide. -
Abraham Assassination.
Shot in the head at Ford's Theatre, by a wel known actor, he died the next morning in the hospital. -
William Crooks
Discovered cathode rays had different properties, used in olf style tv's. -
Henro Becquerel
Discovered some spntaneously decompose and give off very penetrating rays. -
J.J, Thompson
Discovered the element and proposed a model of the structure of the atom. -
Max Planck
Discovered when you vibrate atoms enough you can measure the energy in discreye units, units of the energy packets, quanta's. -
Albert Einstein
Discovered the quanta behaved like discrete particles. -
Robert Millikan
Discovered the charge and mass of an electron. -
Niels Bohr
Theoryl that electrons do not spiral into the nucleus and come up with some rules for what happens. -
Henry Moseley
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Ernest Rutherord
Discovered protons, first identified building blicks of the nuclei of all elements. -
19th Amendment
The 19th amendment was passed giving women the right to vote. -
Werner Heisenberg
Matrix mechanics, fit with the conception of electrons as partial. -
Erwin Schrodinger
Theory that was like the violin but hte vibrations traveled in a circle, and gave it a symbol. -
Louise de Broglie
Discovered electons can act as waves -
James Chadwick
Discovered the neutron. -
World Wide web
Started inventing the World Wide Web. -
adame Curie
Uranium and thorium spontaneous decay process radioactivity. -
Animal Clons
Animal coning was made for livestock produces. -
9/11
Terrorist attack on the twin towers.
