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Falu Red
Falu red or falun red ( ; sv, falu rödfärg, ) is a permeable red paint commonly used on wooden cottages and barns in Sweden, Finland, and Norway. History Following hundreds of years of mining in Falun, large piles of residual product were deposited above ground in the vicinity of the mines. By the 16th Century, mineralization of the mine's tailings and slag added by smelters began to produce a red-coloured sludge rich in copper, limonite, silicic acid, and zinc. When the sludge was heated for a few hours and then mixed with linseed oil and rye flour, it was found to form an excellent anti-weathering paint. During the 17th century, falu red began to be daubed onto wooden buildings to mimic the red-brick façades built by the upper classes. In Sweden's built-up areas, wooden buildings were often painted with falu red until the early 19th century, until authorities began to oppose use of the paint. Resurgence Falu red saw a resurgence in popularity in the Swedish co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Äänekoski
Äänekoski () is a town in Finland. It is located in the Central Finland region, about north of Jyväskylä. The town has a population of () and covers an area of of which is water. The population density is . Neighbouring municipalities are Kannonkoski, Konnevesi, Laukaa, Saarijärvi, Uurainen, Vesanto and Viitasaari. The municipality is unilingually Finnish. The municipality of Äänekosken maalaiskunta was consolidated to Äänekoski in 1969 and the municipality of Konginkangas in 1993. The municipalities of Sumiainen and Suolahti were consolidated to Äänekoski in 2007. History Äänekoski is named after the nearby rapids. Folk etymology connects the name to the word ''ääni'' "sound", but Terho Itkonen has suggested another origin: a Sámi term meaning "big, large" (compare Northern Sámi ''eanas'', "most"). Swedish sources mention a salmon fishery by the rapids around 1455, ''Ænækoski laxefiskeri''. At the time, it was not a proper settlement and was locat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limonite
Limonite () is an iron ore consisting of a mixture of hydrated iron(III) oxide-hydroxides in varying composition. The generic formula is frequently written as FeO(OH)·H2O, although this is not entirely accurate as the ratio of oxide to hydroxide can vary quite widely. Limonite is one of the three principal iron ores, the others being hematite and magnetite, and has been mined for the production of iron since at least 2500 BP. Names Limonite is named for the Greek word λειμών (/leː.mɔ̌ːn/), meaning "wet meadow", or λίμνη (/lím.nɛː/), meaning “marshy lake” as an allusion to its occurrence as '' bog iron ore'' in meadows and marshes. In its brown form it is sometimes called brown hematite or brown iron ore. Characteristics Limonite is relatively dense with a specific gravity varying from 2.7 to 4.3.Northrop, Stuart A. (1959) "Limonite" ''Minerals of New Mexico'' (revised edition) University of New Mexico Press, Albuquerque, New Mexico, pp. 329–333, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dalarna
Dalarna () is a '' landskap'' (historical province) in central Sweden. English exonyms for it are Dalecarlia () and the Dales. Dalarna adjoins Härjedalen, Hälsingland, Gästrikland, Västmanland and Värmland Värmland () also known as Wermeland, is a '' landskap'' (historical province) in west-central Sweden. It borders Västergötland, Dalsland, Dalarna, Västmanland, and Närke, and is bounded by Norway in the west. Latin name versions are ''Va .... It is also bordered by Norway in the west. The province's borders mostly coincide with the modern administrative Dalarna County (''län''). The word "Dalarna" means "the dales" (valleys). The area is a holiday destination for Swedes from the south, who often travel there in the summer, drawn by its fishing lakes, campgrounds, and forests. Some Swedes own or rent a second home in Dalarna, where they are likely to have a vegetable garden and apple trees. In mid-June, midsummer celebrations and dances are held in many of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron Oxides
Iron oxides are chemical compounds composed of iron and oxygen. Several iron oxides are recognized. All are black magnetic solids. Often they are non-stoichiometric. Oxyhydroxides are a related class of compounds, perhaps the best known of which is rust. Iron oxides and oxyhydroxides are widespread in nature and play an important role in many geological and biological processes. They are used as iron ores, pigments, catalysts, and in thermite, and occur in hemoglobin. Iron oxides are inexpensive and durable pigments in paints, coatings and colored concretes. Colors commonly available are in the "earthy" end of the yellow/orange/red/brown/black range. When used as a food coloring, it has E number E172. Stoichiometries Iron oxides feature as ferrous ( Fe(II)) or ferric ( Fe(III)) or both. They adopt octahedral or tetrahedral coordination geometry. Only a few oxides are significant at the earth's surface, particularly wüstite, magnetite, and hematite. * Oxides of FeII ** F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linseed Oil
Linseed oil, also known as flaxseed oil or flax oil (in its edible form), is a colourless to yellowish oil obtained from the dried, ripened seeds of the flax plant (''Linum usitatissimum''). The oil is obtained by pressing, sometimes followed by solvent extraction. Owing to its polymer-forming properties, linseed oil is often blended with combinations of other oils, resins or solvents as an impregnator, drying oil finish or varnish in wood finishing, as a pigment binder in oil paints, as a plasticizer and hardener in putty, and in the manufacture of linoleum. Linseed oil use has declined over the past several decades with increased availability of synthetic alkyd resins—which function similarly but resist yellowing. Linseed oil is an edible oil in demand as a dietary supplement, as a source of α-Linolenic acid, an omega-3 fatty acid. In parts of Europe, it is traditionally eaten with potatoes and quark. Structure and composition : 450px, Representative triglyceride found ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flour
Flour is a powder made by grinding raw grains, roots, beans, nuts, or seeds. Flours are used to make many different foods. Cereal flour, particularly wheat flour, is the main ingredient of bread, which is a staple food for many cultures. Corn flour has been important in Mesoamerican cuisine since ancient times and remains a staple in the Americas. Rye flour is a constituent of bread in central and northern Europe. Cereal flour consists either of the endosperm, germ, and bran together (whole-grain flour) or of the endosperm alone (refined flour). ''Meal'' is either differentiable from flour as having slightly coarser particle size (degree of comminution) or is synonymous with flour; the word is used both ways. For example, the word '' cornmeal'' often connotes a grittier texture whereas corn flour connotes fine powder, although there is no codified dividing line. The CDC has cautioned not to eat raw flour doughs or batters. Raw flour can contain bacteria like '' E. col ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Falu Rödfärg
Falu (born Falguni Shah in Mumbai, India) is an American singer whose music blends ancient classical Indian melodies with contemporary western sounds. In her burgeoning U.S.-based career, she has worked and collaborated with a wide array of artists including A.R. Rahman (''Slumdog Millionaire''), Yo-Yo Ma (in The Silk Road Project), Philip Glass, Wyclef Jean, her teacher Ustad Sultan Khan, Blues Traveler, Ricky Martin and Bernie Worrell (Parliament Funkadelic). In 2022, she won the Grammy Award for Best Children's Album for her album ''A Colorful World''. Biography In her early years in Mumbai, Falu was trained in the ''Jaipur gharana'' musical tradition, honing her talent for up to 16 hours a day. She later continued studying under the sarangi/vocal master Ustad Sultan Khan. Falu moved to the States in 2000, and joined the Boston-based Indo-American band Karyshma as a lead vocalist. In 2001, she met up with Asian Massive leader Karsh Kale, and hit the nationwide university ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crofter
A croft is a fenced or enclosed area of land, usually small and arable, and usually, but not always, with a crofter's dwelling thereon. A crofter is one who has tenure and use of the land, typically as a tenant farmer, especially in rural areas. Etymology The word ''croft'' is West Germanic in etymology and is now most familiar in Scotland, most crofts being in the Highlands and Islands area. Elsewhere the expression is generally archaic. In Scottish Gaelic, it is rendered (, plural ). Legislation in Scotland The Scottish croft is a small agricultural landholding of a type that has been subject to special legislation applying to the Scottish Highlands since 1886. The legislation was largely a response to the complaints and demands of tenant families who were victims of the Highland Clearances. The modern crofters or tenants appear very little in evidence before the beginning of the 18th century. They were tenants at will underneath the tacksman and wadsetters, but practi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Farmer
A farmer is a person engaged in agriculture, raising living organisms for food or raw materials. The term usually applies to people who do some combination of raising field crops, orchards, vineyards, poultry, or other livestock. A farmer might own the farm land or might work as a laborer on land owned by others. In most developed economies, a "farmer" is usually a farm owner (landowner), while employees of the farm are known as ''farm workers'' (or farmhands). However, in other older definitions a farmer was a person who promotes or improves the growth of plants, land or crops or raises animals (as livestock or fish) by labor and attention. Over half a billion farmers are smallholders, most of whom are in developing countries, and who economically support almost two billion people. Globally, women constitute more than 40% of agricultural employees. History Farming dates back as far as the Neolithic, being one of the defining characteristics of that era. By the Bronze Age, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calcination
Calcination refers to thermal treatment of a solid chemical compound (e.g. mixed carbonate ores) whereby the compound is raised to high temperature without melting under restricted supply of ambient oxygen (i.e. gaseous O2 fraction of air), generally for the purpose of removing impurities or volatile substances and/or to incur thermal decomposition. The root of the word calcination refers to its most prominent use, which is to remove carbon from limestone (calcium carbonate) through combustion to yield calcium oxide (quicklime). This calcination reaction is CaCO3(s) → CaO(s) + CO2(g). Calcium oxide is a crucial ingredient in modern cement, and is also used as a chemical flux in smelting. Industrial calcination generally emits carbon dioxide (), making it a major contributor to climate change. A calciner is a steel cylinder that rotates inside a heated furnace and performs indirect high-temperature processing (550–1150 °C, or 1000–2100 °F) within a controlled ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zinc
Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodic table. In some respects, zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn2+ and Mg2+ ions are of similar size.The elements are from different metal groups. See periodic table. Zinc is the 24th most abundant element in Earth's crust and has five stable isotopes. The most common zinc ore is sphalerite (zinc blende), a zinc sulfide mineral. The largest workable lodes are in Australia, Asia, and the United States. Zinc is refined by froth flotation of the ore, roasting, and final extraction using electricity ( electrowinning). Zinc is an essential trace element for humans, animals, plants and for microorganisms and is necessary for prenatal and postnatal development. It ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silicic Acid
Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula , most commonly found in nature as quartz and in various living organisms. In many parts of the world, silica is the major constituent of sand. Silica is one of the most complex and most abundant families of materials, existing as a compound of several minerals and as a synthetic product. Notable examples include fused quartz, fumed silica, silica gel, opal and aerogels. It is used in structural materials, microelectronics (as an electrical insulator), and as components in the food and pharmaceutical industries. Structure In the majority of silicates, the silicon atom shows tetrahedral coordination, with four oxygen atoms surrounding a central Si atomsee 3-D Unit Cell. Thus, SiO2 forms 3-dimensional network solids in which each silicon atom is covalently bonded in a tetrahedral manner to 4 oxygen atoms. In contrast, CO2 is a linear molecule. The starkly different structures of the dioxide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
