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Edward G. Mazurs
Edward G. Mazurs (1894–1983) was a chemist who wrote a history of the periodic system of the chemical elements which is still considered a "classic book on the history of the periodic table". Originally self-published as ''Types of graphic representation of the periodic system of chemical elements'' (1957), it was reviewed by the ACS in 1958 as "the most complete survey of the range of human imagination in representing graphically the Mendeleev periodic law." A revised "centenary" edition covering a full 100 years of periodic tables was republished under the title ''Graphic Representations of the Periodic System During One Hundred Years '' in 1974. Mazurs provided a comprehensive analysis and classification of periodic tables, listing and classifying over 700 periodic tables. He recommended Charles Janet's left-step system and suggested that it could be expanded into three dimensions. Life and career Mazurs was born in Latvia, then under Czarist rule. He earned a master's degr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Periodic Table
The periodic table, also known as the periodic table of the (chemical) elements, is a rows and columns arrangement of the chemical elements. It is widely used in chemistry, physics, and other sciences, and is generally seen as an icon of chemistry. It is a graphic formulation of the periodic law, which states that the properties of the chemical elements exhibit an approximate periodic dependence on their atomic numbers. The table is divided into four roughly rectangular areas called blocks. The rows of the table are called periods, and the columns are called groups. Elements from the same group of the periodic table show similar chemical characteristics. Trends run through the periodic table, with nonmetallic character (keeping their own electrons) increasing from left to right across a period, and from down to up across a group, and metallic character (surrendering electrons to other atoms) increasing in the opposite direction. The underlying reason for these trends is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean-Baptiste Dumas
Jean Baptiste André Dumas (14 July 180010 April 1884) was a French chemist, best known for his works on organic analysis and synthesis, as well as the determination of atomic weights (relative atomic masses) and molecular weights by measuring vapor densities. He also developed a method for the analysis of nitrogen in compounds. Biography Dumas was born in Alès (Gard), and became an apprentice to an apothecary in his native town. In 1816, he moved to Geneva, where he attended lectures by M. A. Pictet in physics, C. G. de la Rive in chemistry, and A. P. de Candolle in botany, and before he had reached his majority, he was engaged with Pierre Prévost in original work on problems of physiological chemistry and embryology. In 1822, he moved to Paris, acting on the advice of Alexander von Humboldt, where he became professor of chemistry, initially at the Lyceum, later (1835) at the École polytechnique. He was one of the founders of the École centrale des arts et manufactures ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karl Arnold (chemist)
Karl Arnold variously Carl Johann Moritz Arnold or Johann Karl Moritz Arnold (12 March 1853, Uffenheim - 24 June 1929, Hanover) was a German chemist and mountaineer. He served as Director and briefly as Vice-Chancellor of the Institute of Chemistry at the University of Veterinary Medicine Hanover. His published works on organic chemistry were of importance to veterinarians, medical students and pharmacists. He was also an accomplished alpinist and chairman of the Hanover section of the German-Austrian Alpine Association. Early life Karl Arnold was the son of chemist Georg Friedrich Arnold of the village of Uffenheim. From 1851 to 1859 Georg Friedrich Arnold operated a pharmacy in the lower floor of the town hall. The family then moved to Ansbach, where Georg Friedrich Arnold became the Bavarian court pharmacist. Education After attending the local gymnasium Karl Arnold began training as a pharmacist with his Father, also working as an assistant apothecary in pharmacies in Zo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ernst Huth
Ernst Huth (27 December 1845, Potsdam – 5 August 1897) was a German naturalist and botanist. He studied mathematics and natural sciences in Berlin, later working as a secondary school teacher in Frankfurt an der Oder. Beginning in 1883 he published the ''Monatliche Mittheilungen des Naturwissenschaftlichen Vereins Regierungsbezirkes Frankfurt'', in which he was the author of numerous scientific articles. He is known for his treatment of the botanical family Ranunculaceae, of which he was the taxonomic author of many species, especially plants within the genus ''Delphinium''. In 1908 August Brand named the genus ''Huthia'' (synonym ''Cantua'', family Polemoniaceae The Polemoniaceae (Jacob's-ladder or phlox family) are a family of flowering plants consisting of about 25 genera with 270–400 species of annuals and perennials native to the Northern Hemisphere and South America, with the center of diversit ...) in his honor. Selected works * ''Ueber Geokarpe, Amphikarpe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georg Bornemann
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Georg may refer to: * ''Georg'' (film), 1997 *Georg (musical), Estonian musical * Georg (given name) * Georg (surname) * , a Kriegsmarine coastal tanker See also * George (other) George may refer to: People * George (given name) * George (surname) * George (singer), American-Canadian singer George Nozuka, known by the mononym George * George Washington, First President of the United States * George W. Bush, 43rd President ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heinrich Friedrich Gretschel
Heinrich Friedrich Gretschel (21 October 1830, Prietitz near Elstra, Germany – 2 February 1892, Freiburg, Switzerland) was a German mathematician and scientist. In 1847, Gretschel became a student at the Technischen Bildungsanstalt (now TU Dresden). On 28 April 1851 he was enrolled at Leipzig University, where he studied mathematics, natural sciences and ancient languages. In 1854, he passed the examination for the higher school office in the first ranking and became a teacher at the Leipziger Gesamtgymnasium. On 2 January 1873 he was promoted by the Faculty of Philosophy of the University of Leipzig as a result of completing the mathematical dissertation, ''Lehrbuch zur Einführung in die organische Geometrie'' ("Introduction to organic geometry"). On 7 January 1873 he became professor of mathematics and geometric construction at the Bergakademie Freiberg, a position that he held until his death in 1892. In 1876, Gretschel became a Bergrat professor. During 1875–1880, 1881 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Bayley (chemist)
Thomas Bayley may refer to: *Thomas Bayley (politician) (1846–1906), English politician *Thomas Bayley (academic) (died 1706), English academic *Thomas Butterworth Bayley (1744–1802), English magistrate, agriculturist and philanthropist *Tom Bayley (footballer, born 1868) (1868–?), English footballer *Tom Bayley (footballer, born 1921) (1921–1996), English footballer See also *Thomas Bailey (other) *Thomas Bayley Potter (1817–1898), British Liberal Party politician *Thomas Bayly (other) Thomas Bayly may refer to: *Thomas Bayly (Maryland politician) (1775–1829), Maryland congressman *Thomas Monteagle Bayly (1775–1834), Virginia congressman *Thomas H. Bayly (1810–1856), Virginia congressman and son of Thomas M. Bayly *Thomas H ... * Thomas Baillie (other) {{hndis, Bayley, Thomas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heinrich Adolph Baumhauer
Heinrich Adolph Baumhauer (26 October 1848, Bonn, Germany - 1 August 1926, Freiburg, Switzerland) was a German chemist and mineralogist. Baumhauer was the son of lithographer and merchant Mathias Baumhauer (1810–70) and Anna Margaretha Käuffer (variously Kaeuffer, Keuffer, Kaufmann) of Bonn. He studied in Bonn from 1866 to 1869 with Friedrich August Kekule von Stradonitz, Hans Heinrich Landolt and Gerhard vom Rath, receiving his doctorate for the dissertation “Die Reduction des Nitrobenzols durch Chlor-und Bromwasserstoff.” He spent an additional year studying at Göttingen in 1870. In 1871 Baumhauer became a teacher at the Technical University in Frankenberg, Saxony. After a short period of teaching at the Handelsschule in Hildesheim in 1872, he became a chemistry teacher from 1873 to 1896 at the agricultural school of Lüdinghausen, Westphalia. From 1895 to 1925 he was professor of mineralogy and after 1906/1907 also a professor of inorganic chemistry in Freiburg, Swi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gustavus Detlef Hinrichs
Gustavus Detlef Hinrichs (2 December 1836 – 14 February 1923) was a chemist and natural philosopher most widely known for his findings on periodic laws within the chemical elements. Life Hinrichs was born in 1836 in Lunden in the Duchy of Holstein, which at that time was under the rule of Denmark although it was simultaneously part of the German Confederation. He attended the local polytechnic school and the University of Copenhagen. During his schooling he published several articles and books, including descriptions of the magnetic field of earth and its interaction with the aether. Hinrichs graduated in 1860, between the First and Second Schleswig Wars. He emigrated later that year to the United States, settling initially in Davenport, Iowa, where he taught school, then in nearby Iowa City. In 1863 he was appointed a professor of natural philosophy, chemistry, and modern languages at the University of Iowa. He founded the first state weather and crop service in the United ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Odling
William Odling, FRS (5 September 1829 in Southwark, London – 17 February 1921 in Oxford) was an English chemist who contributed to the development of the periodic table. In the 1860s Odling, like many chemists, was working towards classifying the elements, an effort that would eventually lead to the periodic table of elements. He was intrigued by atomic weights and the periodic occurrence of chemical properties. William Odling and Lothar Meyer drew up tables similar, but with improvements on, Dmitri Mendeleev's original table. Odling drew up a table of elements using repeating units of seven elements, which bears a striking resemblance to Mendeleev's first table. The groups are horizontal, the elements are in order of increasing atomic weight and there are vacant slots for undiscovered ones. In addition, Odling overcame the tellurium-iodine problem and he even managed to get thallium, lead, mercury and platinum in the right groups - something that Mendeleev failed to do at h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Newlands (chemist)
John Alexander Reina Newlands (26 November 1837 – 29 July 1898) was a British chemist who worked concerning the periodicity of elements. Biography Newlands was born in London in England, at West Square in Lambeth, the son of a Scottish Presbyterian minister and his Italian wife. Newlands was home-schooled by his father, and later studied at the Royal College of Chemistry, now part of Imperial College London. He was interested in social reform and during 1860 served as a volunteer with Giuseppe Garibaldi in his military campaign to unify Italy. Returning to London, Newlands established himself as an analytical chemist in 1864. In 1868 he became chief chemist of James Duncan's London sugar refinery, where he introduced a number of improvements in processing. Later he quit the refinery and again became an analyst with his brother, Benjamin. Newlands was the first person to devise a periodic table of chemical elements arranged in order of their relative atomic masses publish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexandre-Émile Béguyer De Chancourtois
Alexandre-Émile Béguyer de Chancourtois (20 January 1820 – 14 November 1886) was a French geologist and mineralogist who was the first to arrange the chemical elements in order of atomic weights, doing so in 1862. De Chancourtois only published his paper, but did not publish his actual graph with the irregular arrangement. Although his publication was significant, it was ignored by chemists as it was written in terms of geology. It was Dmitri Mendeleev's table published in 1869 that became most recognized. De Chancourtois was also a professor of mine surveying, and later geology at the École Nationale Supérieure des Mines de Paris. He also was the Inspector of Mines in Paris, and was widely responsible for implementing many mine safety regulations and laws during the time. Life De Chancourtois was born in 1820 in Paris. At age eighteen, he entered the renowned École Polytechnique, one of the best known French grandes écoles of engineering and management. While he was the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
