2.5 Changing Timelines By alixcraft09 276 BCE Ertaosthenes born 195 BCE Eratosthenes died 85 Ptolemy born 165 Ptolemy died Feb 19, 1473 Copernicus born 1514 Copernicus showed Little Clmmentary report to astronomy-minded friends 1532 Copernicus completed Astronomical Manuscript 1541 Copernicus published Astronomical Manuscript May 24, 1543 Copernicus died Feb 15, 1564 Galileo was born 1632 Galileo published “Dialogue Concerning the Two Chief World Systems — Ptolemaic and Copernican” 1633 Galileo was convicted of heresy for his book 1637 Galileo published “Discourses and Mathematical Demonstrations Relating to Two New Sciences” Jan 9, 1642 Galileo died Jan 4, 1643 Newton was born 1687 Newton published “Mathematical Peinciples of Natural Philosophy” 1703 Newton was made president of the Royal Society of London for Improving Natural Knowledge 1704 Newton published “Opticks” Mar 31, 1727 Newton died Feb 12, 1809 Darwin was born 1831 Darwin went on a voyage on the HMS Beagle and saw lots of evidence for his theory 1834 Mendeleev was born 1859 Darwin published "On the Origin of Species" 1860 One of the first internationl chemistry conferences was held and the measuring system of atomic weight was decided on 1861 Mendeleev wrote "Organic Chemistry" 1867 Marie Curie was born 1868 Mendeleev published the first edition of "Principles of Chemistry" about inorganic chmistry 1869 Mendeleev drempt of a table where all of the elements fell into the right spots 1870 Julius Lother Meyer published a paper describing an organization the same as Mendeleev's, but Mendeleev's ideas were used Nov 1, 1880 Wegener Born Apr 19, 1882 Darwin died 1890 The noble gases were discovered and put into the table 1893 Marie Curie earned a physics degree 1895 Helium (the second most abundant gas) was dicovered 1897 Marie Curie begins work on radioactivity and solves why uranium gave off a new narrow beam of energy 1898 Marie Curie disovered Polonium and Radium 1899 Curie disovered beta rays and alpha rays 1902 Marie Curie and her husband see radioactive radiation 1903 Marie Curie and her husband become sick from the years of radiation exposure 1903 Curie recieves her doctorate degree May 24, 1906 Hess born 1907 Mendeleev died 1910 Wegener discovered South America fit perfectly against the west coast of Africa 1911 Wegener co-wrote "The Thermodynamics of the Atmosphere" textbook 1915 Wegener published "The Origin of Continents and Oceans" Jun 8, 1916 Crick was born Jul 25, 1920 Franklin was born 1926 Wegener attended an international conference in new York where others joked and almost insulted his ideas Apr 6, 1928 Watson was born 1930 Wegener Died 1934 Marie Curie died 1950 Linus Pauling, a pioneer of X-ray crystallography concluded the general shape of DNA must be a helix 1952 Franklin took a very clear X-ray diffraction image of DNA 1953 Watson admitted that he and Crick couldn't have found the double helix without Franklin Apr 25, 1953 An issue of Nature published Watson and Crick's article "A Structure for Deoxyribose Nucleic Acid" Apr 16, 1958 Franklin died 1962 Hess published his theory of seafloor spreading in "History of Ocean Basins" 1962 Watson, Wilkins, and Crick received the Nobel Prize in medicine/physiology but Franklin couldn't since she had passed away 1963 Geologists realized Earth's magnetic field had reversed polarity many times Aug 25, 1969 Hess died 1970 Geologists agreed on the term "plate tectonics" Jul 28, 2004 Crick died