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Nils Johan Berlin
Nils Johan Berlin (Nils Johannes Berlin) (18 February 1812 – 27 December 1891) was a Sweden, Swedish chemist and physician, who held various professorships at the University of Lund from 1843 to 1864. Berlin was the first chemist who took the initiative to write a textbook on elementary science, the purpose being to provide basic science education for the Public, general public. His chemistry research emphasized the study of minerals, especially the newly-discovered rare earths, having devised means of separating yttrium and erbium. The mineral berlinite (a type of aluminium phosphate) is named after him. Berlin became a member of the Royal Swedish Academy of Sciences in 1844. Education Berlin graduated from the University of Uppsala with a doctor of philosophy in 1833, having studied under the tutelage of Jöns Jacob Berzelius. He completed a doctor of medicine degree in 1837, also at the University of Uppsala. Academic career Berlin held a number of faculty positions at th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Härnösand
Härnösand () is a Urban areas in Sweden, locality and the seat of Härnösand Municipality in Västernorrland County, Sweden with 25,012 inhabitants in 2023. It is called "the gate to the High Coast" because of the world heritage landscape just a few miles north of Härnösand. Härnösand is the seat of the Diocese of Härnösand, the county residence in Härnösand, County Governor residence and Västernorrland County Museum. History On 10 December 1885, Härnösand became the first town in Sweden with electric street lighting, following the Gådeå power station being taken into use. Education Härnösand is the seat of National Agency for Special Needs Education and Schools (Sweden), The National Agency for Special Needs Education and Schools (''Specialpedagogiska skolmyndigheten''). Swedish International Development Cooperation Agency, The Swedish International Development Cooperation Agency (Sida) operates its training programme Sida Partnership Forum in Härn� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doctor Of Philosophy
A Doctor of Philosophy (PhD, DPhil; or ) is a terminal degree that usually denotes the highest level of academic achievement in a given discipline and is awarded following a course of Postgraduate education, graduate study and original research. The name of the degree is most often abbreviated PhD (or, at times, as Ph.D. in North American English, North America), pronounced as three separate letters ( ). The University of Oxford uses the alternative abbreviation "DPhil". PhDs are awarded for programs across the whole breadth of academic fields. Since it is an earned research degree, those studying for a PhD are required to produce original research that expands the boundaries of knowledge, normally in the form of a Thesis, dissertation, and, in some cases, defend their work before a panel of other experts in the field. In many fields, the completion of a PhD is typically required for employment as a university professor, researcher, or scientist. Definition In the context o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceria
Cerium(IV) oxide, also known as ceric oxide, ceric dioxide, ceria, cerium oxide or cerium dioxide, is an oxide of the rare-earth metal cerium. It is a pale yellow-white powder with the chemical formula CeO2. It is an important commercial product and an intermediate in the purification of the element from the ores. The distinctive property of this material is its reversible conversion to a non-stoichiometric oxide. Production Cerium occurs naturally as oxides, always as a mixture with other rare-earth elements. Its principal ores are bastnaesite and monazite. After extraction of the metal ions into aqueous base, Ce is separated from that mixture by addition of an oxidant followed by adjustment of the pH. This step exploits the low solubility of CeO2 and the fact that other rare-earth elements resist oxidation.. Cerium(IV) oxide is formed by the calcination of cerium oxalate or cerium hydroxide. Cerium also forms cerium(III) oxide, , which is unstable and will oxidize t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rare-earth Elements
The rare-earth elements (REE), also called the rare-earth metals or rare earths, and sometimes the lanthanides or lanthanoids (although scandium and yttrium, which do not belong to this series, are usually included as rare earths), are a set of 17 nearly indistinguishable lustrous silvery-white soft heavy metals. Compounds containing rare earths have diverse applications in electrical and electronic components, lasers, glass, magnetic materials, and industrial processes. The term "rare-earth" is a misnomer because they are not actually scarce, but historically it took a long time to isolate these elements. They are relatively plentiful in the entire Earth's crust (cerium being the 25th-most-abundant element at 68 parts per million, more abundant than copper), but in practice they are spread thinly as trace impurities, so to obtain rare earths at usable purity requires processing enormous amounts of raw ore at great expense; thus the name "rare" earths. Scandium and yttrium are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johan Gadolin
Johan Gadolin (5 June 176015 August 1852) was a Finnish chemist, physicist and mineralogist. Gadolin discovered a " new earth" containing the first rare-earth compound yttrium, which was later determined to be a chemical element. He is also considered the founder of Finnish chemistry research, as the second holder of the Chair of Chemistry at the Royal Academy of Turku (or ''Åbo Kungliga Akademi''). Gadolin was ennobled for his achievements and awarded the Order of Saint Vladimir and the Order of Saint Anna. Early life and education Johan Gadolin was born in Åbo (Finnish name Turku), Finland (then a part of Sweden). Johan was the son of Jakob Gadolin, professor of physics and theology at Åbo. Johan began to study mathematics at the Royal Academy of Turku (''Åbo Kungliga Akademi'') when he was fifteen. Later he changed his major to chemistry, studying with Pehr Adrian Gadd, the first chair of chemistry at Åbo. In 1779 Gadolin moved to Uppsala University. In 1781, he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ytterby
Ytterby () is a village on the Swedish island of Resarö, in Vaxholm Municipality in the Stockholm archipelago. Today the residential area is dominated by suburban homes. The name of the village translates to "outer village". Ytterby is the single richest source of elemental discoveries in the world; the chemical elements yttrium (Y), terbium (Tb), erbium (Er), and ytterbium (Yb) are all named after Ytterby, and the elements holmium (Ho), scandium (Sc), thulium (Tm), tantalum (Ta), and gadolinium (Gd) were also first discovered there. Local roads connect Ytterby to and hence the mainland. Except for the winter months, passenger ships of the '' Waxholmsbolaget'' call at a pier in Ytterby, providing a connection to Vaxholm town and Stockholm. Mine Quartz was mined in the area beginning in the 1600s for the ironworks in Uppland. Feldspar was mined for local porcelain manufacture, such as Gustavsberg, and the porcelain trade with Britain and Poland. The mine is likely the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Feldspar
Feldspar ( ; sometimes spelled felspar) is a group of rock-forming aluminium tectosilicate minerals, also containing other cations such as sodium, calcium, potassium, or barium. The most common members of the feldspar group are the ''plagioclase'' (sodium-calcium) feldspars and the ''alkali'' (potassium-sodium) feldspars. Feldspars make up about 60% of the Earth's crust and 41% of the Earth's continental crust by weight. Feldspars crystallize from magma as both intrusive and extrusive igneous rocks and are also present in many types of metamorphic rock. Rock formed almost entirely of calcic plagioclase feldspar is known as anorthosite. Feldspars are also found in many types of sedimentary rocks. Etymology The name ''feldspar'' derives from the German , a compound of the words ' ("field") and ("flake"). had long been used as the word for "a rock easily cleaved into flakes"; was introduced in the 18th century as a more specific term, referring perhaps to its comm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Axel Arrhenius
Carl Axel Arrhenius (29 March 1757 – 20 November 1824) was a Swedish military officer, amateur geologist, and chemist. He is best known for his discovery of the mineral ytterbite (later called gadolinite) in 1787. The discovery of ytterbite was the first step in identifying an entire group of previously unknown elements, the rare earths. Eight stable rare earth elements were eventually extracted from ytterbite: terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, and yttrium. Early life Arrhenius was born in Stockholm on 29 March 1757 to Jakob Larsson Arrhenius and Brita Sofia Georgii. In 1796 he married Gustafva von Bilang. Career Arrhenius became a lieutenant of the Svea Artillery Regiment of the Swedish army, the regiment being stationed in Vaxholm. As an artillery officer, Arrhenius was assigned to study the characteristics of gunpowder at the Swedish Royal Mint's (Kungliga Myntet) laboratory. Being taught to test gunpowder by Bengt Reinh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Popularizer Of Science
Popular science (also called pop-science or popsci) is an interpretation of science intended for a general audience. While science journalism focuses on recent scientific developments, popular science is more broad ranging. It may be written by professional science journalists or by scientists themselves. It is presented in many forms, including books, film and television documentaries, magazine articles, and web pages. History Before the modern specialization and professionalization of science, there was often little distinction between "science" and "popular science", and works intended to share scientific knowledge with a general reader existed as far back as Greek and Roman antiquity. Without these popular works, much of the scientific knowledge of the era might have been lost. For example, none of the original works of the Greek astronomer Eudoxus (4th century BC) have survived, but his contributions were largely preserved due to the didactic poem ''Phenomena'' written ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vicar
A vicar (; Latin: '' vicarius'') is a representative, deputy or substitute; anyone acting "in the person of" or agent for a superior (compare "vicarious" in the sense of "at second hand"). Linguistically, ''vicar'' is cognate with the English prefix "vice", similarly meaning "deputy". It also refers to a senior priest in the Church of England. The title appears in a number of Christian ecclesiastical contexts, but also as an administrative title, or title modifier, in the Roman Empire. In addition, in the Holy Roman Empire, a local representative of the emperor, such as an archduke, could be styled " vicar". Catholic Church The Pope bears the title vicar of Christ (Latin: ''Vicarius Christi''). In Catholic canon law, ''a vicar is the representative of any ecclesiastic'' entity. The Romans had used the term to describe officials subordinate to the praetorian prefects. In the early Christian churches, bishops likewise had their vicars, such as the archdeacons and archpriests, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christian Wilhelm Blomstrand
Christian Wilhelm Blomstrand (20 October 1826 – 5 November 1897) was a Swedish mineralogist and chemist. He was a professor at the University of Lund from 1862-1895, where he isolated the element niobium in 1864. He developed an early version of the periodic table and made advances in understanding the chemistry of coordination compounds. Blomstrand published textbooks in chemistry and was well-known internationally for his scientific contributions. Education and career Blomstrand was born in Växjö, Sweden to his father John Blomstrand, who was a teacher, and his wife Severina Rodhe. Blomstrand studied mineralogy at the University of Lund, where he earned a philosophy degree in 1850. He then became interested in chemistry and was the first recipient of the Berzelius scholarship. In 1854, he completed his habilitation for research on bromine and iodine compounds of tin. With the exception of lecturing at the Elementary Technical School of Malmö in 1855 and working as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swedish Parliament
The Riksdag ( , ; also or , ) is the parliament and the supreme decision-making body of the Kingdom of Sweden. Since 1971, the Riksdag has been a unicameral parliament with 349 members (), elected proportionally and serving, since 1994, fixed four-year terms. The 2022 Swedish general election is the most recent general election. The constitutional mandates of the Riksdag are enumerated in the ''Instrument of Government'' (), and its internal workings are specified in greater detail in the Riksdag Act ().Instrument of Government as of 2012. Retrieved on 16 November 2012. The Riksdag Act [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
