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William Popplewell Bloxam
William Popplewell Bloxam (9 January 1860 – 26 December 1913) was an English chemist known for his work on dyes, particularly indigo in India and at the laboratory of A.G. Perkin. He was nephew of the chemist Charles Loudon Bloxam. Bloxam was born on Mount Street, Grosvenor Square to surgeon William Bloxam and Emma Caroline Kite. He went to school at Northampton Grammar School and then King's College School. He was initially interested in studying law but the death of his father made him study chemistry from his uncle Charles Bloxam at King's College and became an assistant to Heinrich Debus (1824–1915) studying sulphur compounds and later under Vivian Lewes, both at the Royal Naval College, Greenwich. In 1901 he applied for a position at the Madras Presidency College but this was cancelled when the former holder of the position returned from sick leave. He then moved to Bihar to work on the chemistry of indigo production and the extraction of indigotin Indigo dye is an or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indigo
Indigo is a deep color close to the color wheel blue (a primary color in the RGB color space), as well as to some variants of ultramarine, based on the ancient dye of the same name. The word "indigo" comes from the Latin word ''indicum'', meaning "Indian", as the dye was originally exported to Europe from India. It is traditionally regarded as a color in the visible spectrum, as well as one of the seven colors of the rainbow: the color between blue and violet; however, sources differ as to its actual position in the electromagnetic spectrum. The first known recorded use of indigo as a color name in English was in 1289. History ''Indigofera tinctoria'' and related species were cultivated in East Asia, Egypt, India, Bangladesh and Peru in antiquity. The earliest direct evidence for the use of indigo dates to around 4000 BC and comes from Huaca Prieta, in contemporary Peru. Pliny the Elder mentions India as the source of the dye after which it was named. It was importe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Loudon Bloxam
Charles is a masculine given name predominantly found in English and French speaking countries. It is from the French form ''Charles'' of the Proto-Germanic name (in runic alphabet) or ''*karilaz'' (in Latin alphabet), whose meaning was "free man". The Old English descendant of this word was '' Ċearl'' or ''Ċeorl'', as the name of King Cearl of Mercia, that disappeared after the Norman conquest of England. The name was notably borne by Charlemagne (Charles the Great), and was at the time Latinized as ''Karolus'' (as in '' Vita Karoli Magni''), later also as '' Carolus''. Some Germanic languages, for example Dutch and German, have retained the word in two separate senses. In the particular case of Dutch, ''Karel'' refers to the given name, whereas the noun ''kerel'' means "a bloke, fellow, man". Etymology The name's etymology is a Common Germanic noun ''*karilaz'' meaning "free man", which survives in English as churl (< Old English ''ċeorl''), which developed it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grosvenor Square
Grosvenor Square is a large garden square in the Mayfair district of London. It is the centrepiece of the Mayfair property of the Duke of Westminster, and takes its name from the duke's surname "Grosvenor". It was developed for fashionable residences in the 18th century. In the 20th it had an American and Canadian diplomatic presence, and currently is mixed use, commercial. History Sir Richard Grosvenor obtained a licence to develop Grosvenor Square and the surrounding streets in 1710, and development took place between 1725 and 1731. The land was sold in individual plots, with 30 different builders or partnerships taking a lease; about half of these had become bankrupt by 1738. Grosvenor Square was one of the three or four most fashionable residential addresses in London from its construction until the Second World War, with numerous leading members of the aristocracy in residence. The early houses were generally of five or seven bays, with basement, three main stories a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northampton School For Boys
Northampton School for Boys (NSB) is a secondary school in Northampton, England. It was founded as Northampton Town and County Grammar School in 1541 by Thomas Chipsey, Mayor of Northampton. Years 7 to 11 are boys-only, while Sixth Form classes are mixed. The school generally ranks among the best-performing in the county. Foundation and history The school was founded in 1541 by mayor Thomas Chipsey, as the town's free boys grammar school. In 1557, the school moved to St. Gregory's church, which was adapted for its use. The School remained on this site until 1864, when it moved to the Corn Exchange in the Market Square. In 1870, additional premises were opened in Abington Square to educate a further 200 pupils. Due to its popularity, the school moved again in 1911, to new buildings constructed on the present site at Billing Road. During this period the school was known as the Northampton Town and County Grammar School. In 1992, the school became Grant Maintained, later becoming ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heinrich Debus (chemist)
Heinrich Debus (13 July 1824 – 9 December 1915) was a German chemist. Education and career In 1838, he attended a trade school in Kassel, where he was taught by Robert Wilhelm Bunsen. He studied chemistry from 1845 to 1848 in Marburg, and served as Bunsen's assistant from 1847. In 1848, he earned his doctorate by investigating a red madder dye. He completed his habilitation in 1851 after Bunsen left for Breslau. At the suggestion of Frederick Augustus Genth, Debus was named Bunsen's successor at Marburg. Later in 1851 he left for England to be a chemistry teacher at Queenwood College followed from 1868 to 1870 by the position as Science Master at Clifton College, Bristol. He then taught at Guy's Hospital, London from 1870 until appointed foundation Professor of Chemistry in 1873 at the new Royal Naval College, Greenwich, where he remained until his retirement and return to Germany. In 1858, Debus first synthesized imidazole from glyoxal, ammonia, and formaldehyde. The Debus syn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Presidency College, Chennai
Presidency College is an art, commerce, and science college in the city of Chennai in Tamil Nadu, India. On 16 October 1840, this school was established as the Madras Preparatory School before being repurposed as a high school, and then a graduate college. The Presidency College is one of the oldest government arts colleges in India. It is one of two Presidency Colleges established by the British in India, the other being the Presidency College, Kolkata. History Sir Thomas Munro asked for a Committee of Public Instruction to form in 1826. In 1836, the committee's duties changed to the "Committee of Native Education". The plans drawn up by the committee did not commend themselves to the Governor of Madras, Lord Elphinstone, who proposed nineteen resolutions that passed unanimously. Elphinstone chose E. B. Powell, a University of Cambridge Wrangler in mathematics, to be the first principal, and Powell accepted the post. He arrived in Mumbai (Bombay) on September 20, 1840, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indigo Dye
Indigo dye is an organic compound with a distinctive blue color. Historically, indigo was a natural dye extracted from the leaves of some plants of the ''Indigofera'' genus, in particular ''Indigofera tinctoria''; dye-bearing ''Indigofera'' plants were commonly grown and used throughout the world, in Asia in particular, as an important crop, with the production of indigo dyestuff economically important due to the previous rarity of some blue dyestuffs historically. Most indigo dye produced today is synthetic, constituting several thousand tons each year. It is most commonly associated with the production of denim cloth and blue jeans, where its properties allow for effects such as stone washing and acid washing to be applied quickly. Uses The primary use for indigo is as a dye for cotton yarn, mainly used in the production of denim cloth suitable for blue jeans; on average, a pair of blue jeans requires just to of dye. Smaller quantities are used in the dyeing of wool and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
