|
1875 In Science
The year 1875 in science and technology involved some significant events, listed below. Chemistry * Gallium is discovered spectroscopy, spectroscopically by French chemist Paul Emile Lecoq de Boisbaudran. Later in this year he obtains the free metal by electrolysis of its hydroxide and names it. This is the first of Dmitri Mendeleev's predicted elements to be identified. * Phenylhydrazine is discovered by Hermann Emil Fischer. * Swiss chocolatier Daniel Peter working with Henri Nestlé's company perfects a method of manufacturing milk chocolate using condensed milk. Earth sciences * March – Challenger expedition, ''Challenger'' expedition first records Challenger Deep. Genetics * Francis Galton publishes ''The History of Twins'', as a criterion of the relative powers of nature and nurture. Medicine * March 1 – The Hospital for Sick Children (Toronto) is founded in Canada. * The weekly medical journal, ''Deutsche Medizinische Wochenschrift'', is established in Germany by Pau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science
Science is a systematic endeavor that builds and organizes knowledge in the form of testable explanations and predictions about the universe. Science may be as old as the human species, and some of the earliest archeological evidence for scientific reasoning is tens of thousands of years old. The earliest written records in the history of science come from Ancient Egypt and Mesopotamia in around 3000 to 1200 BCE. Their contributions to mathematics, astronomy, and medicine entered and shaped Greek natural philosophy of classical antiquity, whereby formal attempts were made to provide explanations of events in the physical world based on natural causes. After the fall of the Western Roman Empire, knowledge of Greek conceptions of the world deteriorated in Western Europe during the early centuries (400 to 1000 CE) of the Middle Ages, but was preserved in the Muslim world during the Islamic Golden Age and later by the efforts of Byzantine Greek scholars who brought Greek ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Challenger Expedition
The ''Challenger'' expedition of 1872–1876 was a scientific program that made many discoveries to lay the foundation of oceanography. The expedition was named after the naval vessel that undertook the trip, . The expedition, initiated by William Benjamin Carpenter, was placed under the scientific supervision of Sir Charles Wyville Thomson—of the University of Edinburgh and Merchiston Castle School—assisted by five other scientists, including Sir John Murray, a secretary-artist and a photographer. The Royal Society of London obtained the use of ''Challenger'' from the Royal Navy and in 1872 modified the ship for scientific tasks, equipping it with separate laboratories for natural history and chemistry. The expedition, led by Captain George Nares, sailed from Portsmouth, England, on 21 December 1872. Other naval officers included Commander John Maclear. – pages 19 and 20 list the civilian staff and naval officers and crew, along with changes that took place during the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Issai Schur
Issai Schur (10 January 1875 – 10 January 1941) was a Russian mathematician who worked in Germany for most of his life. He studied at the University of Berlin. He obtained his doctorate in 1901, became lecturer in 1903 and, after a stay at the University of Bonn, professor in 1919. As a student of Ferdinand Georg Frobenius, he worked on group representations (the subject with which he is most closely associated), but also in combinatorics and number theory and even theoretical physics. He is perhaps best known today for his result on the existence of the Schur decomposition and for his work on group representations (Schur's lemma). Schur published under the name of both I. Schur, and J. Schur, the latter especially in ''Journal für die reine und angewandte Mathematik''. This has led to some confusion. Childhood Issai Schur was born into a Jewish family, the son of the businessman Moses Schur and his wife Golde Schur (née Landau). He was born in Mogilev on the Dnieper River ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laurent-Guillaume De Koninck
Laurent-Guillaume de Koninck (3 May 1809 – 16 July 1887) was a Belgian palaeontologist and chemist, born at Leuven. He studied medicine in the university of his native town, and in 1831 he became assistant in the chemical schools. He pursued the study of chemistry in Paris, Berlin and Gießen, and was subsequently engaged in teaching the science at Ghent and Liège. In 1856 he was appointed professor of chemistry in the Liège University, and he retained this post until the close of his life. About the year 1835 he began to devote his leisure to the investigation of the Carboniferous fossils around Liège, and ultimately he became distinguished for his researches on the palaeontology of the Palaeozoic rocks, and especially for his descriptions of the molluscs, brachiopods, crustaceans and crinoids of the Carboniferous limestone of Belgium. In recognition of this work the Wollaston medal was awarded to him in 1875 by the Geological Society of London, and in 1876 he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wollaston Medal
The Wollaston Medal is a scientific award for geology, the highest award granted by the Geological Society of London. The medal is named after William Hyde Wollaston, and was first awarded in 1831. It was originally made of gold (1831–1845), then palladium, a metal discovered by Wollaston (1846–1860). Next in gold again (1861–1929) and then in palladium again (1930–present). Laureates SourcGeological Society 1831–1850 *1831 William 'Strata' Smith *1835 Gideon Mantell *1836 Louis Agassiz *1837 Proby Thomas Cautley *1837 Hugh Falconer *1838 Richard Owen *1839 Christian Gottfried Ehrenberg *1840 André Hubert Dumont *1841 Adolphe-Théodore Brongniart *1842 Leopold von Buch *1843 Jean-Baptiste Élie de Beaumont *1843 Pierre Armand Dufrenoy *1844 William Conybeare *1845 John Phillips *1846 William Lonsdale *1847 Ami Boué *1848 William Buckland *1849 Joseph Prestwich *1850 William Hopkins 1851–1900 *1851 Adam Sedgwick *1852 William Henry Fitton *1853 Adolphe d'Arc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
August Wilhelm Hofmann
August Wilhelm von Hofmann (8 April 18185 May 1892) was a German chemist who made considerable contributions to organic chemistry. His research on aniline helped lay the basis of the aniline-dye industry, and his research on coal tar laid the groundwork for his student Charles Blachford Mansfield, Charles Mansfield's practical methods for extracting benzene and toluene and converting them into nitro compounds and amines. Hofmann's discoveries include formaldehyde, hydrazobenzene, the isonitriles, and allyl alcohol. He prepared three ethylamines and tetraethylammonium compounds and established their structural relationship to ammonia. After studying under Justus von Liebig at the University of Giessen, Hofmann became the first director of the Royal College of Chemistry, now part of Imperial College London, in 1845. In 1865 he returned to Germany to accept a position at the Humboldt University of Berlin, University of Berlin as a teacher and researcher. After his return he co-foun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copley Medal
The Copley Medal is an award given by the Royal Society, for "outstanding achievements in research in any branch of science". It alternates between the physical sciences or mathematics and the biological sciences. Given every year, the medal is the oldest Royal Society medal awarded and the oldest surviving scientific award in the world, having first been given in 1731 to Stephen Gray (scientist), Stephen Gray, for "his new Electrical Experiments: – as an encouragement to him for the readiness he has always shown in obliging the Society with his discoveries and improvements in this part of Natural Knowledge". __TOC__ History The medal was created following a donation of Pound sterling, £100 to be used for carrying out experiments by Sir Godfrey Copley, 2nd Baronet, Sir Godfrey Copley, for which the interest on the amount was used for several years. The conditions for the medal have been changed several times; in 1736, it was suggested that "a medal or other honorary prize s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metre Convention
The Metre Convention (french: link=no, Convention du Mètre), also known as the Treaty of the Metre, is an international treaty that was signed in Paris on 20 May 1875 by representatives of 17 nations (Argentina, Austria-Hungary, Belgium, Brazil, Denmark, France, Germany, Italy, Peru, Portugal, Russia, Spain, Sweden and Norway, Switzerland, Ottoman Empire, United States of America, and Venezuela). The treaty created the International Bureau of Weights and Measures (BIPM), an intergovernmental organization under the authority of the General Conference on Weights and Measures ( CGPM) and the supervision of the International Committee for Weights and Measures (CIPM), that coordinates international metrology and the development of the metric system. As well as founding the BIPM and laying down the way in which the activities of the BIPM should be financed and managed, the Metre Convention established a permanent organizational structure for member governments to act in common accord ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Bureau Of Weights And Measures
The International Bureau of Weights and Measures (french: Bureau international des poids et mesures, BIPM) is an intergovernmental organisation, through which its 59 member-states act together on measurement standards in four areas: chemistry, ionising radiation, physical metrology, and coordinated universal time. It is based in Saint-Cloud, Paris, France. The organisation has been referred to as IBWM (from its name in English) in older literature. Structure The BIPM is supervised by the International Committee for Weights and Measures (french: Comité international des poids et mesures, CIPM), a committee of eighteen members that meet normally in two sessions per year, which is in turn overseen by the General Conference on Weights and Measures (french: Conférence générale des poids et mesures, CGPM) that meets in Paris usually once every four years, consisting of delegates of the governments of the Member States and observers from the Associates of the CGPM. These organs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deutsche Medizinische Wochenschrift
The ''Deutsche Medizinische Wochenschrift'' (''German Medical Weekly'') (''DMW'') is a German medical journal established in 1875 by Paul Börner. In the 1980s it was ranked 10th in the world in terms of its impact factor, but in the succeeding two decades the journal lost much of its preeminence due largely to the declining importance of the German language in medical publications and the appearance of a large number of new medical journals in the English language. It is currently published by Georg Thieme Verlag and is an official publication of the Deutsche Gesellschaft für Innere Medizin and the Gesellschaft Deutscher Naturforscher und Ärzte. The editor in chief is Martin Middeke. According to the Journal Citation Reports, its 2008 impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly mean number of citations of articles published in the last two years in a given ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medical Journal
A medical journal is a peer-reviewed scientific journal that communicates medical information to physicians, other health professionals. Journals that cover many medical specialties are sometimes called general medical journals. History The first medical journals were general medical journals, and were established in the late 18th century; specialty-specific medical journals were first introduced in the early 20th century. The first medical journal to be published in the United Kingdom was '' Medical Essays and Observations'', established in 1731 and published in Edinburgh; the first to be published in the United States was ''The Medical Repository'', established in 1797. Criticisms Richard Smith, the former editor of the medical journal ''the BMJ'', has been critical of many of the aspects of modern-day medical journal publishing. See also *List of medical journals * Academic journal An academic journal or scholarly journal is a periodical publication in which scholarship r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hospital For Sick Children (Toronto)
The Hospital for Sick Children (HSC), corporately branded as SickKids, is a major pediatric teaching hospital located on University Avenue in Toronto, Ontario, Canada. Affiliated with the Faculty of Medicine of the University of Toronto, the hospital was ranked the top pediatric hospital in the world by Newsweek in 2021. The hospital's Peter Gilgan Centre for Research and Learning is believed to be the largest pediatric research tower in the world, at . History During 1875, an eleven-room house was rented for a year by a Toronto women's bible study group, led by Elizabeth McMaster. Opened on March 1, it set up six iron cots and "declared open a hospital 'for the admission and treatment of all sick children.'" The first patient, a scalding victim named Maggie, came in on April 3. In its first year, 44 patients were admitted to the hospital in its first year of operation, and 67 others were treated in outpatient clinics. In 1876, the hospital moved to larger facilities. In 189 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Laurent-Guillaume De Koninck")
