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Green Pigments
Green pigments are the materials used to create the green colors seen in painting and the other arts. At one time, such pigments came from minerals, particularly those containing compounds of copper. Green pigments reflect the green portions of the spectrum of visible light, and absorb the others. Important green pigments in art history include Malachite and Verdigris, found in tomb paintings in Ancient Egypt, and the Green earth pigments popular in the Middle Ages. More recent greens, such as Cobalt green, Cobalt Green, are largely synthetic, made in laboratories and factories. Today, the main green pigment is Phthalocyanine Green G. Phthalocyanine green image:Phthalocyanine Green G.png, left, Chemical structure of Phthalocyanine Green G, a major green organic pigment, 20px The dominant green pigment is Phthalocyanine Green G, which is sold under many commercial names. It is a synthetic green pigment from the group of phthalocyanines, a complex (chemistry), complex of copper(II) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copper
Copper is a chemical element; it has symbol Cu (from Latin ) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins, and constantan used in strain gauges and thermocouples for temperature measurement. Copper is one of the few metals that can occur in nature in a directly usable, unalloyed metallic form. This means that copper is a native metal. This led to very early human use in several regions, from . Thousands of years later, it was the first metal to be smelted from sulfide ores, ; the first metal to be cast into a shape in a mold, ; and the first metal to be purposely alloyed with another metal, tin, to create bronze, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Claude Monet
Oscar-Claude Monet (, ; ; 14 November 1840 – 5 December 1926) was a French painter and founder of Impressionism painting who is seen as a key precursor to modernism, especially in his attempts to paint nature as he perceived it. During his long career, he was the most consistent and prolific practitioner of Impressionism's philosophy of expressing one's perceptions of nature, especially as applied to ''En plein air, ''plein air'''' (outdoor) landscape painting. The term "Impressionism" is derived from the title of his painting ''Impression, Sunrise, Impression, soleil levant'', which was exhibited in 1874 at the First Impressionist Exhibition, initiated by Monet and a number of like-minded artists as an alternative to the Salon (Paris), Salon. Monet was raised in Le Havre, Normandy, and became interested in the outdoors and drawing from an early age. Although his mother, Louise-Justine Aubrée Monet, supported his ambitions to be a painter, his father, Claude-Adolphe, disa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giorgione
Giorgio Barbarelli da Castelfranco (; 1470s – 17 September 1510), known as Giorgione, was an Italian painter of the Venetian school during the High Renaissance, who died in his thirties. He is known for the elusive poetic quality of his work, though only about six surviving paintings are firmly attributed to him. The uncertainty surrounding the identity and meaning of his work has made Giorgione one of the most mysterious figures in European art. Together with his younger contemporary Titian, he founded the Venetian school of Italian Renaissance painting, characterised by its use of colour and mood. The school is traditionally contrasted with Florentine painting, which relied on a more linear disegno-led style. Life What little is known of Giorgione's life is given in Giorgio Vasari's '' Lives of the Most Excellent Painters, Sculptors, and Architects''. He came from the small town of Castelfranco Veneto, 40 km inland from Venice. His name sometimes appears as ''Zorz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Botticelli
Alessandro di Mariano di Vanni Filipepi ( – May 17, 1510), better known as Sandro Botticelli ( ; ) or simply known as Botticelli, was an Italian painter of the Early Renaissance. Botticelli's posthumous reputation suffered until the late 19th century, when he was rediscovered by the Pre-Raphaelites who stimulated a reappraisal of his work. Since then, his paintings have been seen to represent the linear grace of late Italian Gothic and some Early Renaissance painting, even though they date from the latter half of the Italian Renaissance period. In addition to the mythological subjects for which he is best known today, Botticelli painted a wide range of religious subjects (including dozens of renditions of the ''Madonna and Child'', many in the round tondo shape) and also some portraits. His best-known works are '' The Birth of Venus'' and '' Primavera'', both in the Uffizi in Florence, which holds many of Botticelli's works.. Botticelli lived all his life in the same ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patina
Patina ( or ) is a thin layer that variously forms on the surface of copper, brass, bronze, and similar metals and metal alloys ( tarnish produced by oxidation or other chemical processes), or certain stones and wooden furniture (sheen produced by age, wear, and polishing), or any similar acquired change of a surface through age and exposure. Additionally, the term is used to describe the aging of high-quality leather. The patinas on leather goods are unique to the type of leather, frequency of use, and exposure. Patinas can provide a protective covering to materials that would otherwise be damaged by corrosion or weathering. They may also be aesthetically appealing. Usage On metal, patina is a coating of various chemical compounds such as oxides, carbonates, sulfides, or sulfates formed on the surface during exposure to atmospheric elements (oxygen, rain, acid rain, carbon dioxide, sulfur-bearing compounds). Patina also refers to accumulated changes in surface texture and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paolo Veronese
Paolo Caliari (152819 April 1588), known as Paolo Veronese ( , ; ), was an Italian Renaissance painter based in Venice, known for extremely large history paintings of religion and mythology, such as ''The Wedding at Cana (Veronese), The Wedding at Cana'' (1563) and ''The Feast in the House of Levi'' (1573). Included with Titian, a generation older, and Tintoretto, a decade senior, Veronese is one of the "great trio that dominated Venetian painting of the ''cinquecento''" and the Late Renaissance in the 16th century.Rosand, 107 Known as a supreme colorist, and after an early period with Mannerism, Paolo Veronese developed a naturalist style of painting, influenced by Titian. His most famous works are elaborate narrative cycles, executed in a dramatic and colorful style, full of majestic architectural settings and glittering pageantry. His large paintings of biblical feasts, crowded with figures, painted for the refectories of monasteries in Venice and Verona are especially famous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chrome Green
Chromium(III) oxide (or chromia) is an inorganic compound with the Chemical formula, formula . It is one of the principal oxides of chromium and is used as a pigment. In nature, it occurs as the rare mineral eskolaite. Structure and properties has the corundum structure, consisting of a Close-packing of equal spheres#FCC and HCP Lattices, hexagonal close packed array of oxide anions with two thirds of the octahedral holes occupied by chromium. Similar to corundum, is a hard, brittle material (Mohs hardness 8 to 8.5). It is antiferromagnetism, antiferromagnetic up to , the Néel temperature. It is not readily attacked by acids. Occurrence occurs naturally as the mineral eskolaite, which is found in chromium-rich tremolite skarns, metaquartzites, and chlorite group, chlorite veins. Eskolaite is also a rare component of chondrite meteorites. The mineral is named after Finnish geologist Pentti Eskola. Production The Parisians Pannetier and Binet first prepared the transparent hy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leonardo Da Vinci
Leonardo di ser Piero da Vinci (15 April 1452 - 2 May 1519) was an Italian polymath of the High Renaissance who was active as a painter, draughtsman, engineer, scientist, theorist, sculptor, and architect. While his fame initially rested on his achievements as a painter, he has also become known for #Journals and notes, his notebooks, in which he made drawings and notes on a variety of subjects, including anatomy, astronomy, botany, cartography, painting, and palaeontology. Leonardo is widely regarded to have been a genius who epitomised the Renaissance humanism, Renaissance humanist ideal, and his List of works by Leonardo da Vinci, collective works comprise a contribution to later generations of artists matched only by that of his younger contemporary Michelangelo. Born out of wedlock to a successful notary and a lower-class woman in, or near, Vinci, Tuscany, Vinci, he was educated in Florence by the Italian painter and sculptor Andrea del Verrocchio. He began his career ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Lead
White lead is the basic lead carbonate 2PbCO3·Pb(OH)2. It is a complex Salt (chemistry), salt, containing both carbonate and hydroxide ions. White lead occurs naturally as a mineral, in which context it is known as hydrocerussite, a hydrate of cerussite. It was formerly used as an ingredient for lead paint and a cosmetic called Venetian ceruse, because of its Opacity (optics), opacity and the satiny smooth mixture it made with dryable oils. However, it tended to cause lead poisoning, and its use has been banned in most countries. Basic lead carbonate is produced by treating lead acetate with carbon dioxide and air. In the laboratory procedure treats lead acetate with urea. It occurs naturally as the mineral cerussite. The compound has been characterized by X-ray crystallography, which confirms the formula. The structure is complicated, features two kinds of Pb(II) sites, those bonded to hydroxide and those bonded to carbonate and hydroxide. Related white lead compounds White ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pompeii
Pompeii ( ; ) was a city in what is now the municipality of Pompei, near Naples, in the Campania region of Italy. Along with Herculaneum, Stabiae, and Villa Boscoreale, many surrounding villas, the city was buried under of volcanic ash and pumice in the eruption of Mount Vesuvius in 79 AD. Largely preserved under the ash, Pompeii offers a unique snapshot of Culture of ancient Rome, Roman life, frozen at the moment it was buried, as well as insight into ancient urban planning. It was a wealthy town of 10,000 to 20,000 residents at the time it was destroyed. It hosted many fine public buildings and luxurious private houses with lavish decorations, furnishings and artworks, which were the main attractions for early excavators; subsequent excavations have found hundreds of private homes and businesses reflecting various architectural styles and social classes, as well as numerous public buildings. Organic remains, including wooden objects and human bodies, were interred in the as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acetic Acid
Acetic acid , systematically named ethanoic acid , is an acidic, colourless liquid and organic compound with the chemical formula (also written as , , or ). Vinegar is at least 4% acetic acid by volume, making acetic acid the main component of vinegar apart from water. Historically, vinegar was produced from the third century BC and was likely the first acid to be produced in large quantities. Acetic acid is the second simplest carboxylic acid (after formic acid). It is an important Reagent, chemical reagent and industrial chemical across various fields, used primarily in the production of cellulose acetate for photographic film, polyvinyl acetate for wood Adhesive, glue, and synthetic fibres and fabrics. In households, diluted acetic acid is often used in descaling agents. In the food industry, acetic acid is controlled by the E number, food additive code E260 as an acidity regulator and as a condiment. In biochemistry, the acetyl group, derived from acetic acid, is funda ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copper(II) Hydroxide
Copper(II) hydroxide is the hydroxide of copper with the chemical formula of Cu(OH)2. It is a pale greenish blue or bluish green solid. Some forms of copper(II) hydroxide are sold as "stabilized" copper(II) hydroxide, although they likely consist of a mixture of copper(II) carbonate and hydroxide. Cupric hydroxide is a strong base, although its low solubility in water makes this hard to observe directly. Occurrence Copper(II) hydroxide has been known since Smelting#Copper and bronze, copper smelting began around 5000 BC although the alchemy, alchemists were probably the first to manufacture it by mixing solutions of lye (sodium or potassium hydroxide) and blue vitriol (copper(II) sulfate). Sources of both compounds were available in antiquity. It was produced on an industrial scale during the 17th and 18th centuries for use in pigments such as blue verditer and Bremen green. These pigments were used in ceramics (art), ceramics and painting. Mineral The mineral of the formula Cu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
