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Daltan was born on September 6, 1766 and his birth place is Manchester, England.
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On July 4, 1776 America was declared an independent Country.
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Dalton began to teach in Manchester, England at a very young age of 12. Soon he became one of the the England's leading scientists. His work led him to the thoery of atoms.
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John Hanson was elected the President of america in November 3, 1781.
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Like other scientific theories/models.Dalton’s atomic model has been perfected over time with the research and discoveries of other scientists. He made some models/hypothesis in around the 1800s and in 1803 specificaly, he noted that oxygen and carbon
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He published an important book:"New System Of Chemical Philosophy". This book was the beginning of modern chemistry.In this book Dalton stated that atoms are the ultimate particle from which all elements are made. Dalton also found out that atoms could join together to form more complicated structures with unique chemical properties. These new chemical units are called molecules. This is why Dalton is known as the father of modern atomic theory.
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Dalton died on July 27, 1844 in Manchester, England. Dalton's death was caused by a stroke.
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Joseph Thomson was born on December 18, 1856 close to Manchester, England.
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Max Planck was born in Kiel, Germany on April 23, 1858. He was one of the key poeple that developed quantum.
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Canada was declared as an independent in 1867.
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Ernest Rutherford was born on August 30, 1871, in Nelson, New Zealand but he spent his professional life primarily in England.
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Sir John A. Macdonald was elected the first prime minister of Canada.
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Niels Bohr was born on October 7, 1885 in Copenhagen, Denmark.
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Erwin Schrodinger was born on August 12, 1887, in Vienna, Austria.
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Joseph Thomson, professor of physics and director of the Cavendish Lab at Cambridge University, announced in April, 1897 that he discoverd the electron. At that time nobody believed him. However it was true.
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In 1898, Thomson suggested a possible model of the atom. This became known as the currant bun or plum pudding model of the atom. The electrons were the currants or plums and the positive charge was the bun or the pudding. This model of the atom didn't hold up for a long time. Thomson improved doltons model and added negative and positve charges.
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Thomson was awarded the Nobel Prize in physics in 1906 for the discovery of the electron and for his work on the conduction of electricity by gases.
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In 1908 Rutherford was awarded the Nobel Prize for Chemistry for chemistry of radioactive things and his investigations of elemtents.
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Rutherford realized that the currant bun model of the atom could not be correct. Rutherford made a new solar system model of the atom. Rutherford tested Thomson's hypothesis of the gold foil experiment. Rutherford decided he should make the gold foil thinner. As he expected, most alpha particles went right through the gold foil but he was amazed when he saw about 5 alpha particles rebounding almost completely backwards.
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Planck first suggested that energy could come in speacial packets, which he called quanta, Einstien applied his idea to light, and deduced the photon. Then Bohr took there ideas and applied them to the model of the atom. Together they developed quantum physics. He improve Rutherfords model because in Rutherfords model they where just anywhere but bohr put the electons in specific places based on there energy levels.
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In 1913, Bohr suggested that electrons can move around the nucleus of an atom in stable orbits with no loss of energy.
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Max Planck won the Nobel Prize award in 1918 for physics.
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Bohr won the Nobel prize in Physics in 1922 for his model of the atom.
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In around the 1930's Schrodinger successfully created a quantum model that describes not only the hydrogen atom but also atoms that have more then one electron. In his model there is no longer any such thing as well-defined electron orbits which Bohr had. Schrodinger dealt only with the probability of finding the electron in a certain place about the nucleus. In place of orbits, now you see "electron clouds".
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In 1933 Schrodinger was awarded the Nobel Prize in physics for the dicovery of new productive forms of atomic theory.
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Rutherford died in Cambridge on October 19, 1937.
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World War II started from 1939 and ended at 1945.
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Thomsons died in Cambridge, Cambridgeshire, England on Aug 30, 1940.
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Because the Germans occupied Denmark during World War II, Bohr made his way to the United States of America where he helped develope the first Atomic Bomb. After the war he returned to Denmark to work on peaceful uses for atomic energy.
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Max Planck died in Göttingen on October 4, 1947.
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Schrodinger died on January 4, 1961.
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Niels Bohr died in Copenhagen, Denmark on November 18, 1962.
