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Thomas Clark (chemist)
Thomas Clark (1801–1867) was a Scottish chemist. He became known for the discovery of the phosphate of soda, and the process of lime softening of hard water the 'Clark process'. A ''Clark degree (°Clark)'' of water hardness is defined as one grain (64.8 mg) of CaCO3 per Imperial gallon (4.55 litres) of water, equivalent to 14.254 ppm. and 10^5 parts of water Life Clark was born at Ayr, the son of a shipmaster and a needleworker. He went to school at the Ayr Academy, and then was placed in the counting-house of Charles Macintosh in Glasgow. After a few years he moved to the St. Rollox chemical works. In 1836 Clark became lecturer on chemistry at the Glasgow Mechanics' Institution. To improve his standing in the scientific world, he entered as a candidate for the M.D. degree of Glasgow in 1827, completing his curriculum in 1831; in the interval he became apothecary to the infirmary (1829). In 1833 he was elected professor of chemistry in Marischal College, Aberdeen, af ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scottish People
The Scots ( sco, Scots Fowk; gd, Albannaich) are an ethnic group and nation native to Scotland. Historically, they emerged in the early Middle Ages from an amalgamation of two Celtic-speaking peoples, the Picts and Gaels, who founded the Kingdom of Scotland (or ''Alba'') in the 9th century. In the following two centuries, the Celtic-speaking Cumbrians of Strathclyde and the Germanic-speaking Angles of north Northumbria became part of Scotland. In the High Middle Ages, during the 12th-century Davidian Revolution, small numbers of Norman nobles migrated to the Lowlands. In the 13th century, the Norse-Gaels of the Western Isles became part of Scotland, followed by the Norse of the Northern Isles in the 15th century. In modern usage, "Scottish people" or "Scots" refers to anyone whose linguistic, cultural, family ancestral or genetic origins are from Scotland. The Latin word ''Scoti'' originally referred to the Gaels, but came to describe all inhabitants of Scotland. Cons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Stuart Mill
John Stuart Mill (20 May 1806 – 7 May 1873) was an English philosopher, political economist, Member of Parliament (MP) and civil servant. One of the most influential thinkers in the history of classical liberalism, he contributed widely to social theory, political theory, and political economy. Dubbed "the most influential English-speaking philosopher of the nineteenth century", he conceived of liberty as justifying the freedom of the individual in opposition to unlimited state and social control. Mill was a proponent of utilitarianism, an ethical theory developed by his predecessor Jeremy Bentham. He contributed to the investigation of scientific methodology, though his knowledge of the topic was based on the writings of others, notably William Whewell, John Herschel, and Auguste Comte, and research carried out for Mill by Alexander Bain. He engaged in written debate with Whewell. A member of the Liberal Party and author of the early feminist work ''The Subjection o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1801 Births
Eighteen or 18 may refer to: * 18 (number), the natural number following 17 and preceding 19 * one of the years 18 BC, AD 18, 1918, 2018 Film, television and entertainment * ''18'' (film), a 1993 Taiwanese experimental film based on the short story ''God's Dice'' * ''Eighteen'' (film), a 2005 Canadian dramatic feature film * 18 (British Board of Film Classification), a film rating in the United Kingdom, also used in Ireland by the Irish Film Classification Office * 18 (''Dragon Ball''), a character in the ''Dragon Ball'' franchise * "Eighteen", a 2006 episode of the animated television series ''12 oz. Mouse'' Music Albums * ''18'' (Moby album), 2002 * ''18'' (Nana Kitade album), 2005 * '' 18...'', 2009 debut album by G.E.M. Songs * "18" (5 Seconds of Summer song), from their 2014 eponymous debut album * "18" (One Direction song), from their 2014 studio album ''Four'' * "18", by Anarbor from their 2013 studio album '' Burnout'' * "I'm Eighteen", by Alice Cooper common ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Novum Testamentum Graece
(''The New Testament in Greek'') is a critical edition of the New Testament in its original Koine Greek, forming the basis of most modern Bible translations and biblical criticism. It is also known as the Nestle–Aland edition after its most influential editors, Eberhard Nestle and Kurt Aland. The text, edited by the Institute for New Testament Textual Research, is currently in its 28th edition, abbreviated NA28. The title is sometimes applied to the United Bible Societies (UBS) edition, which contains the same text (its fifth edition, "UBS5", contains the text from NA28). The latter edition is aimed at translators and so focuses on variants that are important for the meaning whereas the NA includes more variants. The release of a 29th edition is expected in 2024. Methodology The Greek text as presented is what biblical scholars refer to as the "critical text". The critical text is an eclectic text compiled by a committee that compares readings from a large number of m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Graham (chemist)
Thomas Graham (21 December 1805 – 16 September 1869) was a British chemist known for his pioneering work in dialysis and the diffusion of gases. He is regarded as one of the founders of colloid chemistry. Life Graham was born in Glasgow, and educated at the High School of Glasgow. Graham's father was a successful textile manufacturer, and wanted his son to enter into the Church of Scotland. Instead, defying his father's wishes, Graham became a student at the University of Glasgow in 1819. There he developed a strong interest in chemistry, studying under Professor Thomas Thomson, who was impressed and influenced by the young man. He left the University after receiving his MA in 1824. He later studied medicine at the University of Edinburgh and then briefly taught chemistry at the Glasgow University Portland Street Medical School. In 1828 he was elected an Honorary Fellow of the Royal Society of Edinburgh, his proposer was Edward Turner. He won the Society's Keith Medal for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calcium Bicarbonate
Calcium bicarbonate, also called calcium hydrogencarbonate, has the chemical formula Ca(HCO3)2. The term does not refer to a known solid compound; it exists only in aqueous solution containing calcium (Ca2+), bicarbonate (), and carbonate () ions, together with dissolved carbon dioxide (CO2). The relative concentrations of these carbon-containing species depend on the pH; bicarbonate predominates within the range 6.36–10.25 in fresh water. All waters in contact with the atmosphere absorb carbon dioxide, and as these waters come into contact with rocks and sediments they acquire metal ions, most commonly calcium and magnesium, so most natural waters that come from streams, lakes, and especially wells, can be regarded as dilute solutions of these bicarbonates. These hard waters tend to form carbonate scale in pipes and boilers and they react with soaps to form an undesirable scum. Attempts to prepare compounds such as solid calcium bicarbonate by evaporating its solution to dr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sodium Pyrophosphate
Tetrasodium pyrophosphate, also called sodium pyrophosphate, tetrasodium phosphate or TSPP, is an inorganic compound with the chemical formula, formula Na4P2O7. As a salt, it is a white, water-soluble solid. It is composed of pyrophosphate anion and sodium ions. Toxicity is approximately twice that of table salt when ingested orally.Handbook of food toxicology', S. S. Deshpande, page 260 Also known is the decahydrate Na4P2O710(H2O). D.L. Perry S.L. Phillips (1995) ''Handbook of inorganic compounds'' CRC Press Use Tetrasodium pyrophosphate is used as a buffering agent, an emulsifier, a dispersing agent, and a thickening agent, and is often used as a food additive. Common foods containing tetrasodium pyrophosphate include chicken nuggets, marshmallows, pudding, crab meat, imitation crab, canned tuna, and soy-based meat alternatives and cat foods and cat treats where it is used as a palatability enhancer. In toothpaste and dental floss, tetrasodium pyrophosphate acts as a Calculus ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Westminster Review
The ''Westminster Review'' was a quarterly British publication. Established in 1823 as the official organ of the Philosophical Radicals, it was published from 1824 to 1914. James Mill was one of the driving forces behind the liberal journal until 1828. History Early years In 1823, the paper was founded (and funded) by Jeremy Bentham,I Ousby ed., ''The Cambridge Guide to Literature in English'' (CUP 1995), p. 1008. who had long pondered the possibility of establishing a journal for propagating Radical views. The first edition of the journal (January 1824) featured an article by James Mill (continued in the second by his son John Stuart Mill), which served as a provocative reprobation of a rival, more well-established journal, the '' Edinburgh Review'', castigating it as an organ of the Whig party, and for sharing the latter's propensity for fence-sitting in the aristocratic interest. The controversy drew in a wide public response, much however critical: the ''Nuttall Encyclopædi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glasgow Medical Journal
The ''Scottish Medical Journal'' is a general medical journal, which publishes original research in all branches of medicine, review articles, history of medicine articles, and clinical memoranda. The editor-in-chief is Ghulam Nabi (University of Dundee). History The journal obtained its current form in 1956 after a merger of the ''Glasgow Medical Journal'' and the ''Edinburgh Medical Journal'', which were themselves founded in 1822 and 1855, respectively. It is published by Sage Publications and is supported and sponsored by a number of learned societies and college A college (Latin: ''collegium'') is an educational institution or a constituent part of one. A college may be a degree-awarding tertiary educational institution, a part of a collegiate or federal university, an institution offering ...s. ''Edinburgh Medical Journal'' The ''Edinburgh Medical Journal'' was the successor of the ''Edinburgh Medical and Surgical Journal'' (1805–1855) which in turn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marischal College
Marischal College ( ) is a large granite building on Broad Street in the centre of Aberdeen in north-east Scotland, and since 2011 has acted as the headquarters of Aberdeen City Council. However, the building was constructed for and is on long-term lease from the University of Aberdeen, which still uses parts of the building to store its museum collections. Today, it provides corporate office space and public access to council services, adjacent to the Town House, the city's historic seat of local government. Many Aberdonians consider Marischal College to be an icon of the "Granite City" and to symbolise the zenith of Aberdeen's granite-working industry. The construction of the modern college building began in 1835, following the demolition of previous buildings on the site, and was completed in its present form in the early 1900s. It is the second largest granite building in the world. Formerly the seat of the Marischal College and University of Aberdeen founded in 1593, the b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sodium Phosphates
Sodium phosphate is a generic term for a variety of salts of sodium (Na+) and phosphate (PO43−). Phosphate also forms families or condensed anions including di-, tri-, tetra-, and polyphosphates. Most of these salts are known in both anhydrous (water-free) and hydrated forms. The hydrates are more common than the anhydrous forms. Uses Sodium phosphates have many applications in food and for water treatment. For example, sodium phosphates are often used as emulsifiers (as in processed cheese), thickening agents, and leavening agents for baked goods. They are also used to control pH of processed foods. They are also used in medicine for constipation and to prepare the bowel for medical procedures. Moreover, they are used in detergents for softening water, and as an efficient anti rust solution. Adverse effects Sodium phosphates are popular in commerce in part because they are inexpensive and because they are nontoxic at normal levels of consumption. However, oral sodium phosph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
