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Atomic Theory- was not accepted by Aristotle.
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He came up with the elements. He knew there was more than one. He did not believe in the atomic theory at first
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The United States of America declared its independence from Great Britain. They adopt the Declaration of Independence
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Law of Conservation of mass. - No matter is lost int he event of combustion
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Law of definate proportions- regardless of amoutn, a compund is always composed of the same elements in the same proportions by mass
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4 Parts to his theory 1) Everything is made of matter, Atoms are indestructable and indivisable. 2) Atoms that make up the same element are the same in mass and properties. 3) Compounds are formed by two or more elements combined. 4) "A chemical reaction is a rearrangement of atoms"
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Equal volumes of different gases contain an equal number of molecules- Avogadro's Law
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War between the U.S. and Great Britain, because of Great Britian Restricting the U.S. Trade, and America's desire to expand the U.S. Territory. http://www.history.com/topics/us-presidents/james-madison/videos/james-madison-and-the-war-of-1812
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The first mechanical computer was created by charles Babbage
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He conducted research on the cathode ray, static electricity. He also discovered the element thallium.
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Abraham Lincoln was assassinated in Fords Thetre by John Wilkes Booth http://www.history.com/topics/us-presidents/abraham-lincoln/videos/the-other-side-of-lincoln-lincolns-assassination
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Determined the charge-to-mass ratio of the charged particle. He concluded that the mass of the charged particle was much less than a hydrogen atom. Which was the lightest at that time. Which he then discovered the electron, which is smaller than the atom
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Found Radiation after being inspired by X-rays.
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Quantom Theory
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She deduced that the radioactivity does not depend on how atoms are arranged into molecules, but rather that it originates within the atoms themselves.
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Theory of Relativity- The laws of physics are the same for all non-accelerating observers, adn that the speed of light in a cacuum was the independent of the motion of all observers.
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Determined the charge of the electron. It is currently within 1% of the accepted value today. Plum pudding model of the atom.
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Determined that electrons floated around inside an atom, which was made up of mostly empty space. Found the nucleus, a tiny dense region in the center of the atom. -- Nucleus contained positivley charged particles called protons.
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Energy is transferred only in certain well defined quantities. Electrons move around the necleus in a specific route.
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Predicted the wave nature of electrons
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Uncertianty Principle
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The first successful demonstration of a television.
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Found that the nucleus contained a neutral particle- called a neuton. Neutrons has a mass equal to a proton, but carries no charge.
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Wave theory of matter, and the Schrodinger's cat
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Founds the atomic number, which defines the number of protons in an atom.
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John F. Kennedy was assinated by Lee Harvey Oswald, while on a motorcade in Dallas TX. http://www.history.com/this-day-in-history/11/22
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O.J. Simpson was acquitted of the murder if his wife and her friend after a 252 day trial
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Terroists highjacked airlines and crashed them into the twin towers, the pentagon, and the world trade center. https://www.youtube.com/watch?v=PMkZXqS9Iro
