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Developed the idea of the atom.
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DId not believe that everything is made up of atoms, but the four elements (earth, water, fire, wind). https://www.youtube.com/watch?v=PzCppXOY8V4
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America was first discovered by Cristopher Columbus.
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War fought between the French and Indians over land.
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Came up with the Law of Conservation and he was the first that got people talking about what the atom is actually made of.
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War fought between American colonists and Great Britain for freedom.
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announced that the thirteen American colonies, then at war with Great Britain, regarded themselves as thirteen newly independent sovereign states, and no longer a part of the British Empire.
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new government ruled based on these rules
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Law of Definite Proportions- This law states that a compound is composed of exact proportions of elements by mass regardless of how the compound was created. For example, to make water there is a specific ratio of grams of hydrogen to grams of oxygen regardless of where your sample of water was found. All water has this particular proportion.
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Came up with an atomic theory and tested it.
https://www.youtube.com/watch?v=wsYDL6EjV4k -
In 1811 Avogadro hypothesized that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules. Simple gases are not formed of solitary atoms
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John Wilkes Booth went into a theatre and assasinated Lincoln.
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Discovered cathode rays had the following properties: travel in straight lines from the cathode; cause glass to fluoresce; impart a negative charge to objects they strike; are deflected by electric fields and magnets to suggest a negative charge; cause pinwheels in their path to spin indicating they have mass.
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While studying the effect of x-rays on photographic film, he discovered some chemicals spontaneously decompose and give off very pentrating rays.
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Discovered the electron while conducting an experiment with a cathode ray tube.
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Studied uranium and thorium and called their spontaneous decay process "radioactivity". She and her husband Pierre also discovered the radioactive elements polonium and radium.
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used the idea of quanta (discrete units of energy) to explain hot glowing matter.
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Created the theory of relativity, E=mc^2 https://www.youtube.com/watch?v=E2i_NeDq9AY
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Running car not drawn by horse and buggie.
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Oil drop experiment determined the charge (e=1.602 x 10 -19 coulomb) and the mass (m = 9.11 x 10 -28 gram) of an electron.
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Described the atom as a tiny, dense, positively charged core (nucleus), nearly all mass concentrated around electrons, and circulate around some distance. Called the nuclear atom or the planetary model of an atom.
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Discovered and created the atomic battery.
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The "unsinkable" ship hit an iceberg and now lies at the bottom of the ocean.
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War fought over land
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Created a theory that hydrogen atom based on quantum theory that energy is transferred only in certain well defined quantities. Electrons should move around the nucleus but only in prescribed orbits. When jumping from one orbit to another with lower energy, a light quantum is emitted.
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Viewed electrons as continuous clouds and introduced "wave mechanics" as a mathematical model of the atom.
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Discovered that electrons had a dual nature-similar to both particles and waves. Particle/wave duality. Supported Einstein.
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Using alpha particles discovered a neutral atomic particle with a mass close to a proton. Thus was discovered the neutron.
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Japanese bombed military island in Hawaii and got the US into the war.
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Uncertainty Priciple- Electrons don't travel in neat orbits. Electrons that contain photons will change momentum and physics https://www.youtube.com/watch?v=noZWLPpj3to
