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1875 In Science
The year 1875 in science and technology involved some significant events, listed below. Chemistry * Gallium is discovered 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 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 Paul Börner. Metrology * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Condensed Milk
Condensed milk is Milk#Cow, cow's milk from which water has been removed (roughly 60% of it). It is most often found with sugar added, in the form of sweetened condensed milk, to the extent that the terms "condensed milk" and "sweetened condensed milk" are often used interchangeably today. Sweetened condensed milk is a very thick, sweet product, which when Tin can, canned can last for years without refrigeration if not opened. The product is used in numerous dessert dishes in many countries. A related product is evaporated milk, which has undergone a lengthier preservation process because it is not sweetened. Evaporated milk is known in some countries as unsweetened condensed milk. History According to the writings of Marco Polo, in the thirteenth century the Tatars were able to condense milk. Marco Polo reported that of milk paste was carried by each man, who would subsequently mix the product with water. However, this probably refers to the soft Tatar curd (katyk), which can be ... [...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 was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wollaston Medal
The Wollaston Medal is a scientific award for geology and the highest award granted by the Geological Society of London, the oldest geological society in the world. 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). It was switched to gold again from 1861 to 1929, and then back to palladium from 1930 to 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 1851–19 ... [...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 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 University of Berlin as a teacher and researcher. After his return he co-founded the German Chemical Society (''Deutsche Chemische ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copley Medal
The Copley Medal is the most prestigious award of the Royal Society of the United Kingdom, conferred "for sustained, outstanding achievements in any field of science". The award alternates between the physical sciences or mathematics and the biological sciences. It is arguably the highest United Kingdom, British and Commonwealth of Nations, Commonwealth award for scientific achievement, and has often been included among the most distinguished international scientific awards. Given annually, 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". The medal is made of silver-gilt and awarded with a £25,000 prize. It is awarded to "senior scientists" irres ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metre Convention
The Metre Convention (), 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, German Empire, Germany, Kingdom of Italy, Italy, Peru, Portugal, Russian Empire, Russia, Kingdom of Spain (1810-1873), Spain, Union between Sweden and Norway, Sweden and Norway, Switzerland, Ottoman Empire, United States, 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). These organizations coordinate international metrology and the development of internationally recognized System of measurement, systems of measurement. The Metre Convention established a permanent organizational structure for memb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Bureau Of Weights And Measures
The International Bureau of Weights and Measures (, BIPM) is an List of intergovernmental organizations, intergovernmental organisation, through which its 64 member-states act on measurement standards in areas including chemistry, ionising radiation, physical metrology, as well as the International System of Units (SI) and Coordinated Universal Time (UTC). It is headquartered in the Pavillon de Breteuil in Saint-Cloud, near Paris, France. The organisation has been referred to as IBWM (from its name in English) in older literature. Function The BIPM has the mandate to provide the basis for a single, coherent system of measurements throughout the world, traceable to the International System of Units, International System of Units (SI). This task takes many forms, from direct dissemination of units to coordination through international comparisons of national measurement standards (as in electricity and ionising radiation). Following consultation, a draft version of the BIPM Work ... [...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 . 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. The ''DMW'' is currently published by Georg Thieme Verlag and is an official publication of the 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 type of journal ranking. Journals with higher impact factor values are considered more prestigious or important within their field. The Impact Factor of a journa ... is 0.625, ranking it 8 ... [...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. The first English-language general medical journal was '' Medicina Curiosa'', established in 1684, but it ceased publication after only two issues. 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. Among the oldest general medical journals that are still in publication today are ''The Lancet'', established in 1823, and the ''New England Journal of Medicine'', established in 1812. Specialty-specific medical journals were first introduced in the early 20th century. In 1999, Medscape launch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hospital For Sick Children (Toronto)
The Hospital for Sick Children, 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 frequently ranks among the top-three pediatric hospitals in the world by ''Newsweek'', peaking in 2021 at the top of the list. The hospital's Peter Gilgan Centre for Research and Learning is the largest pediatric research centre the world by area; a skyscraper that holds . SickKids is credited with a number of inventions, including Pablum, a fortified children's cereal, in 1930. In 1968, the hospital opened North America's first pediatric intensive care unit. In 1989, the hospital discovered the gene responsible for cystic fibrosis. The hospital's research is primarily based in the fields of genetics and oncology. Several of Canada's first surgeries have been performed at SickKids, including separation of conjoined twins, bone marrow tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fraser's Magazine
''Fraser's Magazine for Town and Country'' was a general and literary journal published in London from 1830 to 1882, which initially took a strong Tory line in politics. It was founded by Hugh Fraser and William Maginn in 1830 and loosely directed by Maginn (and later Francis Mahony) under the name ''Oliver Yorke,'' until about 1840. It circulated until 1882, when it was renamed ''Longman's Magazine''. Editors In its early years, the publisher James Fraser (no relation to Hugh) played a role in soliciting contributors and preparing the magazine for the press. After James Fraser's death in 1841 the magazine was acquired by George William Nickisson, and in 1847 by John William Parker. In 1863, Thomas and William Longman took over all of Parker's business. Its last notable editor was James Anthony Froude (1860–1874). In 1882, ''Fraser's Magazine'' was renamed ''Longman's Magazine'', and was popularised and reduced in cost to sixpence. Contributors Among the contributors wer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
