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First person to purpose idea that matter was not infinitely divisble. Matter is composed of empty space through which atoms move.
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Did not beleive that the nothingness of empty space could exist as Democritus had stated. Gained acceptance of his idea that denied the existent of atoms.
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1st President of the United States, George Washington, was born.
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Found that mass is conserved in a chemical reaction. Law of Conservation of Mass.
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Discoverd the law of defintie proportions.
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All matter is composed of extremely small particles called atoms. All atoms of a given element are identical, having the same size, mass, and chemical properties. Atoms of specific element are different from those of any other element. Atoms cannot be created, divided into smaller particles, or destroyed. Different atoms combine in simple wholenumber ratios to form compounds. In a chemical reaction, atoms are separated, combined, or rearranged.
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Hypothesis that equal volumes of different gases contain an equal number of molecules, provided they are at the same temperature and pressure.
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Modern version of the bowling ball was invented.
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Invented the cathode ray tube. https://www.youtube.com/watch?v=GzMh4q-2HjM
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Alexander Graham Bell invents the telephone.
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Thomas Edison filed a patent for an electric lamp with a carbon filament.
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The soda Coca Cola was invented by John Pemberton
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Discovered some chemicals spontaneously decompose and give off very pentrating rays. Found radiation. https://www.youtube.com/watch?v=GURSTwuX6Bc
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Concluded that the mass of the charged particle was much less than that of a hydrogen atom, The lightest known atom. In other words he found the electron. https://www.youtube.com/watch?v=IdTxGJjA4Jw
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Concluded that matter can gain or lose energy only in small, specific amounts called quanta.
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Video E=mc^2, energy is equal to mass multiplied by the speed of light squared. https://www.youtube.com/watch?v=hW7DW9NIO9M
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Determinded charge of electron and was then able to calculate the mass of an electron.
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Concluded that there was a tiny, dense region, which he called the nucleus, centrally located within the atom that contained all of an atom’s positive charge and virtually all of its mass. https://www.youtube.com/watch?v=8ar0CqT0Vwg
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Discovered that atoms of each element contain a unique positive charge in their nuclei, or atomic number.
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Proposed that electrons must occupy specific, quantized energy levels in an atom.
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Research on quantum theory and for his discovery of wave nature of electrons.
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Treated electrons in atoms as waves, quantum mechanical model of the Atom. Atomic model in which electrons are treated as waves is called the wave mechanical model. Attempts to describe the electron path around the nucleus. Predicted existence of atomic orbitals containing electrons.
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Al Capone was convicted and sentenced to eleven years in federal prison, fined $50,000 and charged $7,692 for court costs, in addition to $215,000 plus interest due on back taxes.
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Concluded that the nucleus also contained another subatomic particle, a neutral particle called the neutron.
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Concluded that it is impossible to make any measurement on an object without disturbing the object, at least a little.
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World War 2 ended on this day. Germany, Italy, and Japan were axis powers. Allied powers included Australia, Brazil, Canada, Newfoundland, New Zealand, South Africa, Soviet Union (from June 1941), United Kingdom, and United States (from December 1941).
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Junior Mints were invented by James O. Welch Company.
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First Corvette was built at General Motors facility in Flint, Michigan.
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Mark Zuckerburg invented Facebook.
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Radiation was not the outcome of some interaction of molecules but must come from the atom itself.This hypothesis was an important step in disproving the ancient assumption that atoms were indivisible.
