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William Bird Herapath
Dr William Bird Herapath FRS FRSE FRCS (28 February 1820 – 12 October 1868) was an English surgeon and chemist known for his discovery of Herapathite. Life He was born in Bristol, the eldest son of William Herapath, Professor of Chemistry at Bristol Medical School and educated at London University, where he was awarded M.B. in 1844. He worked as a surgeon at Queen Elizabeth Hospital, Bristol and St Peter's Hospital, Bristol and was awarded M.D. in 1851. He published many articles in medical, chemical, and other scientific journals and was vice-president of the Bristol Microscopical Society. In 1852 one of his pupils found that adding iodine to the urine of a dog that had been fed quinine produced unusual green crystals. Herapath noticed while studying the crystals under a microscope that they appeared to polarize light and patented the discovery for optical use as Herapathite. He described it as artificial tourmaline, a semi-precious gem. He went on to develop new analytica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Society Of London
The Royal Society, formally The Royal Society of London for Improving Natural Knowledge, is a learned society and the United Kingdom's national academy of sciences. The society fulfils a number of roles: promoting science and its benefits, recognising excellence in science, supporting outstanding science, providing scientific advice for policy, education and public engagement and fostering international and global co-operation. Founded on 28 November 1660, it was granted a royal charter by King Charles II as The Royal Society and is the oldest continuously existing scientific academy in the world. The society is governed by its Council, which is chaired by the Society's President, according to a set of statutes and standing orders. The members of Council and the President are elected from and by its Fellows, the basic members of the society, who are themselves elected by existing Fellows. , there are about 1,700 fellows, allowed to use the postnominal title FRS (Fellow of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FRSE
Fellowship of the Royal Society of Edinburgh (FRSE) is an award granted to individuals that the Royal Society of Edinburgh, Scotland's national academy of science and letters, judged to be "eminently distinguished in their subject". This society received a royal charter in 1783, allowing for its expansion. Elections Around 50 new fellows are elected each year in March. there are around 1,650 Fellows, including 71 Honorary Fellows and 76 Corresponding Fellows. Fellows are entitled to use the post-nominal letters FRSE, Honorary Fellows HonFRSE, and Corresponding Fellows CorrFRSE. Disciplines The Fellowship is split into four broad sectors, covering the full range of physical and life sciences, arts, humanities, social sciences, education, professions, industry, business and public life. A: Life Sciences * A1: Biomedical and Cognitive Sciences * A2: Clinical Sciences * A3: Organismal and Environmental Biology * A4: Cell and Molecular Biology B: Physical, Engineering and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herapathite
Herapathite, or iodoquinine sulfate, is a chemical compound whose crystals are dichroic and thus can be used for polarizing light. It was discovered in 1852 by William Bird Herapath, a Bristol surgeon and chemist. One of his pupils found that adding iodine to the urine of a dog that had been fed quinine produced unusual green crystals. Herapath noticed while studying the crystals under a microscope that they appeared to polarize light. In the 1930s, invented a process to grow single herapathite crystals large enough to be sandwiched between two sheets of glass to create a polarizing filter; these were sold under the Bernotar name by Carl Zeiss. Herapathite can be formed by precipitation by dissolving quinine sulfate in acetic acid and adding iodine tincture. Herapathite's dichroic properties came to the attention of Sir David Brewster, and were later used by Edwin H. Land in 1929 to construct the first type of Polaroid sheet polarizer. He did this by embedding herapathite crysta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Herapath (chemist)
William Herapath (1796–1868) was an English analytical chemist and political reformer. Life Herapath was born in Bristol, where father was a maltster in St. Philip's parish, and after his death succeeded to the business. He gave it up in order to study chemistry. He was one of the founders of the Chemical Society of London, of which he was a fellow, and also of the Bristol Medical School, of which he became professor of chemistry and toxicology on its opening in 1828. On 13 April 1835, at the trial of a woman named Burdock for poisoning by arsenic her lodger, Mrs. Clara Ann Smith, at Bristol, Herapath was expert witness for the prosecution, and made a reputation by his analysis. He was then retained in other criminal and civil trials, and was frequently opposed to Alfred Swaine Taylor. In the case of William Palmer of Rugeley in 1856, when he was a witness for the defence, he was severely handled by Alexander Cockburn, who denounced him as a "thoroughgoing partisan". His othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
St Peter's Hospital, Bristol
St Peter's Hospital, Bristol could be found to the rear of St Peter's church until it was destroyed in the Bristol Blitz in 1940. History A house had stood on that site since approximately 1400 and the hospital was a timbered, gabled mansion. In 1607 the building was bought by a rich merchant named Robert Aldworth who went about completely rebuilding it. In later years (circa 1634) it passed into the ownership of Thomas Elbridge and later still for a short period of time the building was the Bristol Mint. The old Bristol Mint was then bought by the Corporation in 1696 for £800 to be used as a workhouse for the Bristol Corporation of the Poor and it is in this role as a paupers' workhouse that the building is much better known. It was later called St Peter's Hospital as in 1820 85 inmates looked after 306 sick ones. After the cholera outbreak of 1836, the corporation of the poor rented the defunct prison at Stapleton, thereby founding Blackberry Hill Hospital. St Peter's Hospi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tourmaline
Tourmaline ( ) is a crystalline silicate mineral group in which boron is compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Tourmaline is a gemstone and can be found in a wide variety of colors. The term is derived from the Sinhalese "tōramalli", which refers to the carnelian gemstones. History Brightly colored Ceylonese gem tourmalines were brought to Europe in great quantities by the Dutch East India Company to satisfy a demand for curiosities and gems. Tourmaline was sometimes called the "Ceylonese Magnet" because it could attract and then repel hot ashes due to its pyroelectric properties. Tourmalines were used by chemists in the 19th century to polarize light by shining rays onto a cut and polished surface of the gem. Species and varieties Commonly encountered species and varieties: Schorl species: : Brownish black to black—''schorl'', Dravite species: from the Drave district of Carinthia : Dark yellow to brownish blac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Society Of Edinburgh
The Royal Society of Edinburgh is Scotland's national academy of science and letters. It is a registered charity that operates on a wholly independent and non-partisan basis and provides public benefit throughout Scotland. It was established in 1783. , there are around 1,800 Fellows. The Society covers a broader selection of fields than the Royal Society of London, including literature and history. Fellowship includes people from a wide range of disciplines – science & technology, arts, humanities, medicine, social science, business, and public service. History At the start of the 18th century, Edinburgh's intellectual climate fostered many clubs and societies (see Scottish Enlightenment). Though there were several that treated the arts, sciences and medicine, the most prestigious was the Society for the Improvement of Medical Knowledge, commonly referred to as the Medical Society of Edinburgh, co-founded by the mathematician Colin Maclaurin in 1731. Maclaurin was unhappy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philip Kelland
Philip Kelland PRSE FRS (17 October 1808 – 8 May 1879) was an English mathematician. He was known mainly for his great influence on the development of education in Scotland. Life Kelland was born in 1808 the son of Philip Kelland (d.1847), curate in Dunster, Somerset, England. He was educated at Sherborne, and an undergraduate at Queens' College, Cambridge, where he was tutored privately by English mathematician William Hopkins and graduated in 1834 as senior wrangler and first Smith's prizeman. He was ordained in the Church of England. From 1834 to 1838, he was a fellow of Queens' College, Cambridge. Kelland was elected Fellow of the Royal Society in 1838 and Fellow of the Royal Society of Edinburgh in 1839. He served as Secretary of the RSE 1843-4, Vice-President 1857–77 and President 1878-9. He won their Keith Medal for the period 1849–51. He lived his final years at 20 Clarendon Crescent in western Edinburgh. Kelland is buried in Warriston Cemetery in the north of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fellow Of The Royal Society
Fellowship of the Royal Society (FRS, ForMemRS and HonFRS) is an award granted by the judges of the Royal Society of London to individuals who have made a "substantial contribution to the improvement of natural science, natural knowledge, including mathematics, engineering science, and medical science". Fellow, Fellowship of the Society, the oldest known scientific academy in continuous existence, is a significant honour. It has been awarded to many eminent scientists throughout history, including Isaac Newton (1672), Michael Faraday (1824), Charles Darwin (1839), Ernest Rutherford (1903), Srinivasa Ramanujan (1918), Albert Einstein (1921), Paul Dirac (1930), Winston Churchill (1941), Subrahmanyan Chandrasekhar (1944), Dorothy Hodgkin (1947), Alan Turing (1951), Lise Meitner (1955) and Francis Crick (1959). More recently, fellowship has been awarded to Stephen Hawking (1974), David Attenborough (1983), Tim Hunt (1991), Elizabeth Blackburn (1992), Tim Berners-Lee (2001), Venki R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arnos Vale Cemetery
Arnos Vale Cemetery () (also written Arno's Vale Cemetery), in Arnos Vale, Bristol, England, was established in 1837. Its first burial was in 1839. The cemetery followed a joint-stock model, funded by shareholders. It was laid out as an Arcadian landscape with buildings by Charles Underwood. Most of its area is listed, Grade II*, on the Register of Historic Parks and Gardens of special historic interest in England. Arnos Vale cemetery is on the A4 road from Bristol to Bath, southeast of the city centre towards Brislington, about from Temple Meads railway station and about from Bristol bus station. The cemetery has a number of listed buildings and monuments, including the Grade II* listed Church of England mortuary chapel, Nonconformist mortuary chapel, entrance lodges and gates and the screen walls to main entrance. History The cemetery was designed by Charles Underwood in the style of a Greek Necropolis. Within a few years of its opening in 1837 it became the most fa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edwin H
The name Edwin means "rich friend". It comes from the Old English elements "ead" (rich, blessed) and "ƿine" (friend). The original Anglo-Saxon form is Eadƿine, which is also found for Anglo-Saxon figures. People * Edwin of Northumbria (died 632 or 633), King of Northumbria and Christian saint * Edwin (son of Edward the Elder) (died 933) * Eadwine of Sussex (died 982), King of Sussex * Eadwine of Abingdon (died 990), Abbot of Abingdon * Edwin, Earl of Mercia (died 1071), brother-in-law of Harold Godwinson (Harold II) *Edwin (director) (born 1978), Indonesian filmmaker * Edwin (musician) (born 1968), Canadian musician * Edwin Abeygunasekera, Sri Lankan Sinhala politician, member of the 1st and 2nd State Council of Ceylon * Edwin Ariyadasa (1922-2021), Sri Lankan Sinhala journalist * Edwin Austin Abbey (1852–1911) British artist * Edwin Eugene Aldrin (born 1930), although he changed it to Buzz Aldrin, American astronaut * Edwin Howard Armstrong (1890–1954), American ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polaroid (polarizer)
A Polaroid synthetic plastic sheet is a brand name product trademarked and produced by the Polaroid Corporation used as a polarizer or polarizing filter. The term “Polaroid” entered the common vocabulary with the early 1960s introduction of patented film and cameras manufactured by the corporation that produced “instant photos”. Patent The original material, patented in 1929 and further developed in 1932 by Edwin H. Land, consists of many microscopic crystals of iodoquinine sulphate (herapathite) embedded in a transparent nitrocellulose polymer film. The needle-like crystals are aligned during the manufacture of the film by stretching or by applying electric or magnetic fields. With the crystals aligned, the sheet is dichroic: it tends to absorb light which is polarized parallel to the direction of crystal alignment but to transmit light which is polarized perpendicular to it. The resultant electric field of an electromagnetic wave (such as light) determines its polarizat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
