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Mummy Brown
Mummy brown, also called Egyptian brown, is a rich brown bituminous pigment, intermediate in tint between burnt umber and raw umber, and was one of the favourite colours of the Pre-Raphaelites. History Mummy brown was originally made in the 16th and 17th centuries from white pitch, myrrh, and the ground-up remains of ancient Egyptian mummies (both human and feline), but also Guanche mummies of Canary Islands. As it had good transparency, it could be used for glazes, shadows, flesh tones and shading.McCouat, Philip"The life and death of Mummy Brown", ''Journal of Art in Society'' However, in addition to its tendency to crack, it was extremely variable in its composition and quality, and since it contained ammonia and particles of fat, was likely to affect other colours with which it was used. Historically, demand for mummy brown sometimes outstripped the available supply of true Egyptian mummies, leading to occasional substitution of contemporary corpses of slaves or crimina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Martin Drolling
Martin Drolling ( Oberhergheim, Haut-Rhin, September 19, 1752 – Paris, April 16, 1817, aka Drolling the Elder) was a French painter. He was father to Michel Martin Drolling, and to Louise-Adéone Drölling, one of the few successful female painters of the time. Biography Martin Drolling, a native of Oberhergheim, near Colmar, was born in 1752. He received his first lessons in art from an obscure painter of Schlestadt, but afterwards went to Paris and entered the École des Beaux-Arts. He gained momentary celebrity from his 'Interior of a Kitchen,' painted in 1815, exhibited at the Salon of 1817, and now in the Louvre. He usually painted interiors and familiar subjects of general interest. His works were popular during his lifetime, and many were engraved and lithographed. He died in Paris in 1817. The Louvre has paintings a 'Woman at a window' and a 'Violin-Player' by Drolling. Gallery Martin Drolling le Vieux - Portrait of young Adeone (1812).jpg, ''Portrait of Adéone ''P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edward Burne-Jones
Sir Edward Coley Burne-Jones, 1st Baronet, (; 28 August, 183317 June, 1898) was a British painter and designer associated with the Pre-Raphaelite Brotherhood which included Dante Gabriel Rossetti, John Millais, Ford Madox Brown and Holman Hunt. Burne-Jones worked with William Morris as a founding partner in Morris, Marshall, Faulkner & Co in the design of decorative arts. Burne-Jones's early paintings show the influence of Dante Gabriel Rossetti, but by 1870 he had developed his own style. In 1877, he exhibited eight oil paintings at the Grosvenor Gallery (a new rival to the Royal Academy). These included ''The Beguiling of Merlin''. The timing was right and Burne-Jones was taken up as a herald and star of the new Aesthetic Movement. In the studio of Morris and Co. Burne-Jones worked as a designer of a wide range of crafts including ceramic tiles, jewellery, tapestries, and mosaics. Among his most significant and lasting designs are those for stained glass windows the pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pigments
A pigment is a colored material that is completely or nearly insoluble in water. In contrast, dyes are typically soluble, at least at some stage in their use. Generally dyes are often organic compounds whereas pigments are often inorganic compounds. Pigments of prehistoric and historic value include ochre, charcoal, and lapis lazuli. Economic impact In 2006, around 7.4 million tons of inorganic, organic, and special pigments were marketed worldwide. Estimated at around US$14.86 billion in 2018 and will rise at over 4.9% CAGR from 2019 to 2026. The global demand for pigments was roughly US$20.5 billion in 2009. According to an April 2018 report by ''Bloomberg Businessweek'', the estimated value of the pigment industry globally is $30 billion. The value of titanium dioxide – used to enhance the white brightness of many products – was placed at $13.2 billion per year, while the color Ferrari red is valued at $300 million each year. Physical principles Lik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron Oxide Pigments
Iron () is a chemical element with symbol Fe (from la, ferrum) and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, right in front of oxygen (32.1% and 30.1%, respectively), forming much of Earth's outer and inner core. It is the fourth most common element in the Earth's crust. In its metallic state, iron is rare in the Earth's crust, limited mainly to deposition by meteorites. Iron ores, by contrast, are among the most abundant in the Earth's crust, although extracting usable metal from them requires kilns or furnaces capable of reaching or higher, about higher than that required to smelt copper. Humans started to master that process in Eurasia during the 2nd millennium BCE and the use of iron tools and weapons began to displace copper alloys, in some regions, only around 1200 BCE. That event is considered the transition from the Bronze Age to the Iron Age. In t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Butterworth-Heinemann
Butterworth–Heinemann is a British publishing company specialised in professional information and learning materials for higher education and professional training, in printed and electronic forms. It was formed in 1990 by the merger of Heinemann Professional Publishing and Butterworths Scientific, both subsidiaries of Reed International. With its earlier constituent companies, the founding dates back to 1923. It has publishing units in Oxford (UK) and Waltham, Massachusetts (United States). As of 2006, it is an imprint of Elsevier. See also *LexisNexis Butterworths LexisNexis is a part of the RELX corporation that sells data analytics products and various databases that are accessed through online portals, including portals for computer-assisted legal research (CALR), newspaper search, and consumer informa ... References External links * Book publishing companies of the United Kingdom Elsevier imprints {{publish-corp-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mummia
Mummia, mumia, or originally mummy referred to several different preparations in the history of medicine, from "mineral pitch (resin), pitch" to "powdered human mummies". It originated from Arabic ''mūmiyā'' "a type of resinous bitumen found in Western Asia and used curatively" in Medicine in the medieval Islamic world, traditional Islamic medicine, which was translated as ''pissasphaltus'' (from "pitch" and "asphalt") in ancient Greek medicine. In Medieval medicine of Western Europe, medieval European medicine, ''mūmiyā'' "bitumen" was transliterated into Latin as ''mumia'' meaning both "a bituminous medicine from Persia" and "mummy". Merchants in apothecaries dispensed expensive mummia bitumen, which was thought to be an effective cure-all for many ailments. It was also used as an aphrodisiac. Beginning around the 12th century when supplies of imported natural bitumen ran short, mummia was misinterpreted as "mummy", and the word's meaning expanded to "a black resinous exud ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caput Mortuum (pigment)
Caput mortuum (Latin, meaning "dead head", and variously spelled caput mortum or caput mortem), also known as cardinal purple, is the name given to a purple variety of haematite iron oxide pigment, used in oil paints and paper dyes. Due to the cultural significance of its deep purple colour, it was a very popular for painting the robes of religious figures and important personages (e.g. art patrons), with its popularity peaking in the 18th and 19th centuries. The name for this pigment may have come from the alchemical usage, since iron oxide (rust) is the useless residue (''caput mortuum'') of oxidization. It was originally a byproduct of sulfuric acid manufacture during the 17th and 18th centuries, and was possibly an early form of the copperas process used for the manufacture of Venetian red Venetian red is a light and warm (somewhat unsaturated) pigment that is a darker shade of red, derived from nearly pure ferric oxide (Fe2O3) of the hematite type. Modern versions are fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hematite
Hematite (), also spelled as haematite, is a common iron oxide compound with the formula, Fe2O3 and is widely found in rocks and soils. Hematite crystals belong to the rhombohedral lattice system which is designated the alpha polymorph of . It has the same crystal structure as corundum () and ilmenite (). With this it forms a complete solid solution at temperatures above . Hematite naturally occurs in black to steel or silver-gray, brown to reddish-brown, or red colors. It is mined as an important ore mineral of iron. It is electrically conductive. Hematite varieties include ''kidney ore'', ''martite'' (pseudomorphs after magnetite), ''iron rose'' and ''specularite'' (specular hematite). While these forms vary, they all have a rust-red streak. Hematite is not only harder than pure iron, but also much more brittle. Maghemite is a polymorph of hematite (γ-) with the same chemical formula, but with a spinel structure like magnetite. Large deposits of hematite are found in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goethite
Goethite (, ) is a mineral of the diaspore group, consisting of iron(III) oxide-hydroxide, specifically the "α" polymorph. It is found in soil and other low-temperature environments such as sediment. Goethite has been well known since ancient times for its use as a pigment (brown ochre). Evidence has been found of its use in paint pigment samples taken from the caves of Lascaux in France. It was first described in 1806 based on samples found in the Hollertszug Mine in Herdorf, Germany. The mineral was named after the German polymath and poet Johann Wolfgang von Goethe (1749–1832). Composition Goethite is an iron oxyhydroxide containing ferric iron. It is the main component of rust and bog iron ore. Goethite's hardness ranges from 5.0 to 5.5 on the Mohs Scale, and its specific gravity varies from 3.3 to 4.3. The mineral forms prismatic needle-like crystals ("needle ironstone") but is more typically massive. Feroxyhyte and lepidocrocite are both polymorphs of the iron oxy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quartz
Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO4 silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation from α-quartz to β-quartz takes place abruptly at . Since the transformation is accompanied by a significant change in volume, it can easily induce microfracturing of ceramics or rocks passing through this temperature threshold. There are many different varieties of quartz, several of which are classified as gemstones. Since antiquity, varieties of quartz have been the most commonly used minerals in the making of jewelry and hardstone carvings, especially in Eurasia. Quartz is the mineral defining the val ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaolin
Kaolinite ( ) is a clay mineral, with the chemical composition Al2 Si2 O5( OH)4. It is an important industrial mineral. It is a layered silicate mineral, with one tetrahedral sheet of silica () linked through oxygen atoms to one octahedral sheet of alumina () octahedra. Rocks that are rich in kaolinite are known as kaolin () or china clay. Kaolin is occasionally referred to by the antiquated term lithomarge, from the Ancient Greek ''litho-'' and Latin ''marga'', meaning 'stone of marl'. Presently the name lithomarge can refer to a compacted, massive form of kaolin. The name ''kaolin'' is derived from Gaoling (), a Chinese village near Jingdezhen in southeastern China's Jiangxi Province. The name entered English in 1727 from the French version of the word: , following François Xavier d'Entrecolles's reports on the making of Jingdezhen porcelain. Kaolinite has a low shrink–swell capacity and a low cation-exchange capacity (1–15 meq/100 g). It is a soft, earthy, usu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ammonia
Ammonia is an inorganic compound of nitrogen and hydrogen with the formula . A stable binary hydride, and the simplest pnictogen hydride, ammonia is a colourless gas with a distinct pungent smell. Biologically, it is a common nitrogenous waste, particularly among aquatic organisms, and it contributes significantly to the nutritional needs of terrestrial organisms by serving as a precursor to 45% of the world's food and fertilizers. Around 70% of ammonia is used to make fertilisers in various forms and composition, such as urea and Diammonium phosphate. Ammonia in pure form is also applied directly into the soil. Ammonia, either directly or indirectly, is also a building block for the synthesis of many pharmaceutical products and is used in many commercial cleaning products. It is mainly collected by downward displacement of both air and water. Although common in nature—both terrestrially and in the outer planets of the Solar System—and in wide use, ammonia is both caust ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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