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Pottery. Pottery is the process and the products of forming vessels and other objects with clay and other ceramic materials, which are fired at high temperatures to give them a hard and durable form. Major types include earthenware, stoneware and porcelain. The place where such wares are made by a "potter" is also called a "pottery" (plural "potteries"). The definition of "pottery", used by the ASTM International, is "all fired ceramic wares that contain clay when formed, except technical, structural, and refractory products." In art history and archaeology, especially of ancient and prehistoric periods, "pottery" often means vessels only, and sculpted.

Pottery. figurines of the same material are called "terracottas". Pottery is one of the oldest human inventions, originating before the Neolithic period, with ceramic objects like the Gravettian culture Venus of Dolní Věstonice figurine discovered in the Czech Republic dating back to 29,000–25,000 BC, and pottery vessels that were discovered in Jiangxi, China, which date back to 18,000 BC. Early Neolithic and pre-Neolithic pottery artifacts have been found, in Jōmon Japan (10,500 BC), the Russian Far East (14,000 BC), Sub-Saharan Africa (9,400 BC), South America (9,000s–7,000s BC), and the Middle East (7,000s–6,000s BC).Pottery is made by forming a ceramic (often clay).

Pottery. body into objects of a desired shape and heating them to high temperatures (600–1600 °C) in a bonfire, pit or kiln and induces reactions that lead to permanent changes including increasing the strength and rigidity of the object. Much pottery is purely utilitarian, but some can also be regarded as ceramic art. A clay body can be decorated before or after firing.Clay-based pottery can be divided into three main groups: earthenware, stoneware and porcelain. These require increasingly more specific clay material, and increasingly higher firing temperatures. All three are made in glazed and unglazed varieties, for different purposes. All may.

Pottery. also be decorated by various techniques. In many examples the group a piece belongs to is immediately visually apparent, but this is not always the case. The fritware of the Islamic world does not use clay, so technically falls outside these groups. Historic pottery of all these types is often grouped as either "fine" wares, relatively expensive and well-made, and following the aesthetic taste of the culture concerned, or alternatively "coarse", "popular", "folk" or "village" wares, mostly undecorated, or simply so, and often less well-made.Cooking in clay pots became less popular once metal pots became available, but is still used.

Pottery. for dishes that depend on the qualities of pottery cooking, such as biryani, cassoulet, daube, tagine, jollof rice, kedjenou, cazuela, and baked beans.## Main types.## Earthenware.The earliest forms of pottery were made from clays that were fired at low temperatures, initially in pit-fires or in open bonfires. They were hand formed and undecorated. Earthenware can be fired as low as 600 °C, and is normally fired below 1200 °C. Because unglazed biscuit earthenware is porous, it has limited utility for the storage of liquids or as tableware. However, earthenware has had a continuous history from the Neolithic period to today.

Pottery. It can be made from a wide variety of clays, some of which fire to a buff, brown or black colour, with iron in the constituent minerals resulting in a reddish-brown. Reddish coloured varieties are called terracotta, especially when unglazed or used for sculpture. The development of ceramic glaze made impermeable pottery possible, improving the popularity and practicality of pottery vessels. The addition of decoration has evolved throughout its history.## Stoneware.Stoneware is pottery that has been fired in a kiln at a relatively high temperature, from about 1,100 °C to 1,200 °C, and is stronger and non-porous to liquids. The.

Pottery. as art.## Porcelain.Porcelain is made by heating materials, generally including kaolin, in a kiln to temperatures between 1200 and 1400 (°C). This is higher than used for the other types, and achieving these temperatures was a long struggle, as well as realizing what materials were needed. The toughness, strength and translucence of porcelain, relative to other types of pottery, arises mainly from vitrification and the formation of the mineral mullite within the body at these high temperatures.Although porcelain was first made in China, the Chinese traditionally do not recognise it as a distinct category, grouping it with stoneware as "high-fired.

Pottery. ware, opposed to "low-fired" earthenware. This confuses the issue of when it was first made. A degree of translucency and whiteness was achieved by the Tang dynasty (AD 618–906), and considerable quantities were being exported. The modern level of whiteness was not reached until much later, in the 14th century. Porcelain was also made in Korea and in Japan from the end of the 16th century, after suitable kaolin was located in those countries. It was not made effectively outside East Asia until the 18th century.## Archaeology.The study of pottery can help to provide an insight into past cultures. Fabric.

Pottery. analysis (see section below), used to analyse the "fabric of pottery", is important part of archaeology for understanding the archaeological culture of the excavated site by studying the fabric of artifacts, such as their usage, source material composition, decorative pattern, color of patterns, etc. This helps to understand characteristics, sophistication, habits, technology, tools, trade, etc. of the people who made and used the pottery. Carbon dating reveals the age. Sites with similar pottery characteristics have the same culture, those sites which have distinct cultural characteristics but with some overlap are indicative of cultural exchange such as trade or living in.

Pottery. vicinity or continuity of habitation, etc. Examples are black and red ware, redware, Sothi-Siswal culture and Painted Grey Ware culture. The six fabrics of Kalibangan is a good example of use of fabric analysis in identifying a differentiated culture which was earlier thought to be typical Indus Valley civilisation (IVC) culture.Pottery is durable, and fragments, at least, often survive long after artifacts made from less-durable materials have decayed past recognition. Combined with other evidence, the study of pottery artefacts is helpful in the development of theories on the organisation, economic condition and the cultural development of the societies that produced.

Pottery. or acquired pottery. The study of pottery may also allow inferences to be drawn about a culture's daily life, religion, social relationships, attitudes towards neighbours, attitudes to their own world and even the way the culture understood the universe.Chronologies based on pottery are often essential for dating non-literate cultures and are often of help in the dating of historic cultures as well. Trace-element analysis, mostly by neutron activation, allows the sources of clay to be accurately identified and the thermoluminescence test can be used to provide an estimate of the date of last firing. Examining fired pottery shards from prehistory,.

Pottery. of minerals in a rock. For Archaeologists, the "fabric analysis" of pottery entails the study of "clay matrix" and "inclusions" in the clay body as well as the "firing temperature and conditions". Analysis is done to examine the following 3 in detail: how pottery was made e.g. material, design such as shape and style, etc. its decorations, such as patterns, colors of patterns, slipped (glazing) or unslipped decoration evidence of type of use.The Six fabrics of Kalibangan is a good example of fabric analysis.## Clay bodies and mineral contents.Body (or clay body) is a term for the main pottery form.

Pottery. of these different clays is composed of different types and amounts of minerals that determine the characteristics of resulting pottery. There can be regional variations in the properties of raw materials used for the production of pottery, and these can lead to wares that are unique in character to a locality. It is common for clays and other materials to be mixed to produce clay bodies suited to specific purposes. A common component of clay bodies is the mineral kaolinite. Other minerals in the clay, such as feldspar, act as fluxes which lower the vitrification temperature of bodies. Following is.

Pottery. a list of different types of clay used for pottery. Kaolin, is sometimes referred to as china clay because it was first used in China. Used for porcelain. Ball clay: An extremely plastic, fine grained sedimentary clay, which may contain some organic matter. Small amounts can be added to porcelain bodies to increase plasticity. Fire clay: A clay having a slightly lower percentage of fluxes than kaolin, but usually quite plastic. It is highly heat resistant form of clay which can be combined with other clays to increase the firing temperature and may be used as an ingredient to make.

Pottery. stoneware type bodies. Stoneware clay: Suitable for creating stoneware. Has many of the characteristics between fire clay and ball clay, having finer grain, like ball clay but is more heat resistant like fire clays. Common red clay and shale clay have vegetable and ferric oxide impurities which make them useful for bricks, but are generally unsatisfactory for pottery except under special conditions of a particular deposit. Bentonite: An extremely plastic clay which can be added in small quantities to short clay to increase the plasticity.## Production of pottery.Production of pottery includes the following three stages: making clay body, i.e. paste.

Pottery. or putty. shaping and moulding firing or baking decorating, such as glazing (slipping), painting, etc.## Shaping methods.Pottery can be shaped by a range of methods that include:## Firing.Firing produces irreversible changes in the body. It is only after firing that the article or material is pottery. In lower-fired pottery, the changes include sintering, the fusing together of coarser particles in the body at their points of contact with each other. In the case of porcelain, where different materials and higher firing-temperatures are used, the physical, chemical and mineralogical properties of the constituents in the body are greatly altered. In all.

Pottery. cases, the reason for firing is to permanently harden the wares and the firing regime must be appropriate to the materials used to make them. As a rough guide, modern earthenwares are normally fired at temperatures in the range of about 1,000°C (1,830 °F) to 1,200 (C); stonewares at between about 1100 (C) to 1300 (C); and porcelains at between about 1200 (C) to 1400 (C). Historically, reaching high temperatures was a long-lasting challenge, and earthenware can be fired effectively as low as 600°C, achievable in primitive pit firing.## Firing methods.Firing pottery can be done using a variety of methods,.

Pottery. than a brick or stone kiln. Unfired pots are first brought to the place where a mound will be built, customarily by the women and girls of the village. The mound's foundation is made by placing sticks on the ground, then:## Firing stages.Before being shaped, clay must be prepared. Kneading helps to ensure an even moisture content throughout the body. Air trapped within the clay body needs to be removed. This is called de-airing and can be accomplished either by a machine called a vacuum pug or manually by wedging. Wedging can also help produce an even moisture content. Once.

Pottery. changes that will change the material. "Glaze fired" is the final stage of some pottery making, or "glost fired". A glaze may be applied to the bisque form and the object can be decorated in several ways. After this the object is "glazed fired", which causes the glaze material to melt, then adhere to the object. Depending on the temperature schedule the glaze firing may also further mature the body as chemical and physical changes continue.## Decorating.Pottery may be decorated in many different ways. Some decoration can be done before or after the firing. Painting has been used since early.

Pottery. prehistoric times (China painting), and can be very elaborate. The painting is often applied to pottery that has been fired once, and may then be overlaid with a glaze afterwards. Many pigments change colour when fired, and the painter must allow for this. Glaze: Perhaps the most common form of decoration, that also serves as protection to the pottery, by being tougher and keeping liquid from penetrating the pottery. Glaze may be clear, especially over painting, or coloured and opaque. There is more detail in the section below. Carving: Pottery vessels may be decorated by shallow carving of the clay.

Pottery. body, typically with a knife or similar instrument used on the wheel. This is common in Chinese porcelain of the classic periods. Burnishing: The surface of pottery wares may be "burnished" prior to firing by rubbing with a suitable instrument of wood, steel or stone to produce a polished finish that survives firing. It is possible to produce very highly polished wares when fine clays are used or when the polishing is carried out on wares that have been partially dried and contain little water, though wares in this condition are extremely fragile and the risk of breakage is high.

Pottery. hand or by machine of a band of colour to the edge of a plate or cup. Also known as "lining", this operation is often carried out on a potter's wheel. Agateware is named after its resemblance to the quartz mineral agate which has bands or layers of colour that are blended together, agatewares are made by blending clays of differing colours together but not mixing them to the extent that they lose their individual identities. The wares have a distinctive veined or mottled appearance. The term "agateware" is used to describe such wares in the United Kingdom; in Japan.

Pottery. the term ""neriage" is used and in China, where such things have been made since at least the Tang Dynasty, they are called "marbled" wares. Great care is required in the selection of clays to be used for making agatewares as the clays used must have matching thermal movement characteristics. : This is a clay slip, that is used to coat the surface of pottery, usually before firing. Its purpose is often decorative though it can also be used to mask undesirable features in the clay to which it is applied. Engobe slip may be applied by painting or by.

Pottery. dipping to provide a uniform, smooth, coating. Engobe has been used by potters from pre-historic times until the present day and is sometimes combined with sgraffito decoration, where a layer of engobe is scratched through to reveal the colour of the underlying clay. With care it is possible to apply a second coat of engobe of a different colour to the first and to incise decoration through the second coat to expose the colour of the underlying coat. Engobes used in this way often contain substantial amounts of silica, sometimes approaching the composition of a glaze. Gold: Decoration with gold.

Pottery. used for the decoration only of ware of the highest class. "Bright Gold" – consists of a solution of gold sulphoresinate together with other metal resonates and a flux. The name derives from the appearance of the decoration immediately after removal from the kiln as it requires no burnishing "Mussel Gold" – an old method of gold decoration. It was made by rubbing together gold leaf, sugar and salt, followed by washing to remove solubles## Glazing.Glaze is a glassy coating on pottery, the primary purposes of which are decoration and protection. One important use of glaze is to render porous.

Pottery. pottery vessels impermeable to water and other liquids. Glaze may be applied by dusting the unfired composition over the ware or by spraying, dipping, trailing or brushing on a thin slurry composed of the unfired glaze and water. The colour of a glaze after it has been fired may be significantly different from before firing. To prevent glazed wares sticking to kiln furniture during firing, either a small part of the object being fired (for example, the foot) is left unglazed or, alternatively, special refractory "spurs"" are used as supports. These are removed and discarded after the firing.Some specialised glazing.

Pottery. techniques include: Salt-glazing, where common salt is introduced to the kiln during the firing process. The high temperatures cause the salt to volatize, depositing it on the surface of the ware to react with the body to form a sodium aluminosilicate glaze. In the 17th and 18th centuries, salt-glazing was used in the manufacture of domestic pottery. Now, except for use by some studio potters, the process is obsolete. The last large-scale application before its demise in the face of environmental clean air restrictions was in the production of salt-glazed sewer-pipes. Ash glazing – ash from the combustion of plant.

Pottery. matter has been used as the flux component of glazes. The source of the ash was generally the combustion waste from the fuelling of kilns although the potential of ash derived from arable crop wastes has been investigated. Ash glazes are of historical interest in the Far East although there are reports of small-scale use in other locations such as the Catawba Valley Pottery in the United States. They are now limited to small numbers of studio potters who value the unpredictability arising from the variable nature of the raw material. Underglaze decoration (in the manner of many blue and.

Pottery. white wares). Underglaze may be applied by brush strokes, air brush, or by pouring the underglaze into the mould, covering the inside, creating a swirling effect, then the mould is filled with slip. In-glaze decoration On-glaze decoration Enamel## History.A great part of the history of pottery is prehistoric, part of past pre-literate cultures. Therefore, much of this history can only be found among the artifacts of archaeology. Because pottery is so durable, pottery and shards of pottery survive from millennia at archaeological sites, and are typically the most common and important type of artifact to survive. Many prehistoric cultures are.

Pottery. named after the pottery that is the easiest way to identify their sites, and archaeologists develop the ability to recognise different types from the chemistry of small shards.Before pottery becomes part of a culture, several conditions must generally be met. First, there must be usable clay available. Archaeological sites where the earliest pottery was found were near deposits of readily available clay that could be properly shaped and fired. China has large deposits of a variety of clays, which gave them an advantage in early development of fine pottery. Many countries have large deposits of a variety of clays. Second,.

Pottery. it must be possible to heat the pottery to temperatures that will achieve the transformation from raw clay to ceramic. Methods to reliably create fires hot enough to fire pottery did not develop until late in the development of cultures. Third, the potter must have time available to prepare, shape and fire the clay into pottery. Even after control of fire was achieved, humans did not seem to develop pottery until a sedentary life was achieved. It has been hypothesized that pottery was developed only after humans established agriculture, which led to permanent settlements. However, the oldest known pottery is.

Pottery. from the Czech Republic and dates to 28,000 BC, at the height of the ice age, long before the beginnings of agriculture. Fourth, there must be a sufficient need for pottery in order to justify the resources required for its production. Methods of forming: Hand-shaping was the earliest method used to form vessels. This included the combination of pinching and coiling. Firing: The earliest method for firing pottery wares was the use of bonfires pit fired pottery. Firing times might be short but the peak-temperatures achieved in the fire could be high, perhaps in the region of 900 (°C), and.

Pottery. were reached very quickly. Clay: Early potters used whatever clay was available to them in their geographic vicinity. However, the lowest quality common red clay was adequate for low-temperature fires used for the earliest pots. Clays tempered with sand, grit, crushed shell or crushed pottery were often used to make bonfire-fired ceramics because they provided an open-body texture that allowed water and volatile components of the clay to escape freely. The coarser particles in the clay also acted to restrain shrinkage during drying, and hence reduce the risk of cracking. Form: In the main, early bonfire-fired wares were made with.

Pottery. rounded bottoms to avoid sharp angles that might be susceptible to cracking. Glazing: the earliest pots were not glazed. The potter's wheel was invented in Mesopotamia sometime between 6,000 and 4,000 BC (Ubaid period) and revolutionised pottery production. Moulds were used to a limited extent as early as the 5th and 6th century BC by the Etruscans and more extensively by the Romans. Slipcasting, a popular method for shaping irregular shaped articles. It was first practised, to a limited extent, in China as early as the Tang dynasty. Transition to kilns: The earliest intentionally constructed were pit-kilns or trench-kilns—holes dug.

Pottery. in the ground and covered with fuel. Holes in the ground provided insulation and resulted in better control over firing. Kilns: Pit fire methods were adequate for creating simple earthenware, but other pottery types needed more sophisticated kilns (see below kilns).## History by region.## Beginnings of pottery.Pottery may well have been discovered independently in various places, probably by accidentally creating it at the bottom of fires on a clay soil. All the earliest vessel forms were pit fired and made by coiling, which is a simple technology to learn. The earliest-known ceramic objects are Gravettian figurines such as those discovered.

Pottery. at Dolní Věstonice in the modern-day Czech Republic. The Venus of Dolní Věstonice is a Venus figurine, a statuette of a nude female figure dated to 29,000–25,000 BC (Gravettian industry). Sherds have been found in China and Japan from a period between 12,000 and perhaps as long as 18,000 years ago. As of 2012, the earliest pottery found anywhere in the world, dating to 20,000 to 19,000 years before the present, was found at Xianrendong Cave in the Jiangxi province of China.Other early pottery vessels include those excavated from the Yuchanyan Cave in southern China, dated from 16,000 BC, and.

Pottery. those found in the Amur River basin in the Russian Far East, dated from 14,000 BC.The Odai Yamamoto I site, belonging to the Jōmon period, currently has the oldest pottery in Japan. Excavations in 1998 uncovered earthenware fragments which have been dated as early as 14,500 BC.The term "Jōmon" means "cord-marked" in Japanese. This refers to the markings made on the vessels and figures using sticks with cords during their production. Recent research has elucidated how Jōmon pottery was used by its creators.It appears that pottery was independently developed in Sub-Saharan Africa during the 10th millennium BC, with findings dating.

Pottery. to at least 9,400 BC from central Mali, and in South America during the 9,000s–7,000s BC. The Malian finds date to the same period as similar finds from East Asia – the triangle between Siberia, China and Japan – and are associated in both regions to the same climatic changes (at the end of the ice age new grassland develops, enabling hunter-gatherers to expand their habitat), met independently by both cultures with similar developments: the creation of pottery for the storage of wild cereals (pearl millet), and that of small arrowheads for hunting small game typical of grassland. Alternatively, the.

Pottery. creation of pottery in the case of the Incipient Jōmon civilisation could be due to the intensive exploitation of freshwater and marine organisms by late glacial foragers, who started developing ceramic containers for their catch.## East Asia.In Japan, the Jōmon period has a long history of development of Jōmon pottery which was characterized by impressions of rope on the surface of the pottery created by pressing rope into the clay before firing. Glazed Stoneware was being created as early as the 15th century BC in China. A form of Chinese porcelain became a significant Chinese export from the Tang Dynasty.

Pottery. (AD 618–906) onwards. Korean potters adopted porcelain as early as the 14th century AD. Japanese porcelain was made in the early 16th century after Shonzui Goradoyu-go brought back the secret of its manufacture from the Chinese kilns at Jingdezhen.In contrast to Europe, the Chinese elite used pottery extensively at table, for religious purposes, and for decoration, and the standards of fine pottery were very high. From the Song dynasty (960–1279) for several centuries elite taste favoured plain-coloured and exquisitely formed pieces; during this period true porcelain was perfected in Ding ware, although it was the only one of the Five.

Pottery. had also conquered. At the same time Jingdezhen porcelain, produced in Imperial factories, took the undisputed leading role in production, which it has retained to the present day. The new elaborately painted style was now favoured at court, and gradually more colours were added.The secret of making such porcelain was sought in the Islamic world and later in Europe when examples were imported from the East. Many attempts were made to imitate it in Italy and France. However it was not produced outside of the Orient until 1709 in Germany.## South Asia.Cord-Impressed style pottery belongs to 'Mesolithic' ceramic tradition that.

Pottery. developed among Vindhya hunter-gatherers in Central India during the Mesolithic period. This ceramic style is also found in later Proto-Neolithic phase in nearby regions. This early type of pottery, also found at the site of Lahuradewa, is currently the oldest known pottery tradition in South Asia, dating back to 7,000–6,000 BC. Wheel-made pottery began to be made during the Mehrgarh Period II (5,500–4,800 BC) and Merhgarh Period III (4,800–3,500 BC), known as the ceramic Neolithic and chalcolithic. Pottery, including items known as the ed-Dur vessels, originated in regions of the Saraswati River / Indus River and have been found in.

Pottery. a number of sites in the Indus Civilization.Despite an extensive prehistoric record of pottery, including painted wares, little "fine" or luxury pottery was made in the subcontinent in historic times. Hinduism discourages eating off pottery, which probably largely accounts for this. Most traditional Indian pottery vessels are large pots or jars for storage, or small cups or lamps, often treated as disposable. In contrast there are long traditions of sculpted figures, often rather large, in terracotta.## Southeast Asia.Pottery in Southeast Asia is as diverse as its ethnic groups. Each ethnic group has their own set of standards when it comes.

Pottery. to pottery arts. Potteries are made due to various reasons, such as trade, food and beverage storage, kitchen usage, religious ceremonies, and burial purposes.## West Asia.Around 8000 BC during the Pre-pottery Neolithic period, and before the invention of pottery, several early settlements became experts in crafting beautiful and highly sophisticated containers from stone, using materials such as alabaster or granite, and employing sand to shape and polish. Artisans used the veins in the material to maximum visual effect. Such objects have been found in abundance on the upper Euphrates river, in what is today eastern Syria, especially at the site.

Pottery. of Bouqras.The earliest history of pottery production in the Fertile Crescent starts the Pottery Neolithic and can be divided into four periods, namely: the Hassuna period (7000–6500 BC), the Halaf period (6500–5500 BC), the Ubaid period (5500–4000 BC), and the Uruk period (4000–3100 BC). By about 5000 BC pottery-making was becoming widespread across the region, and spreading out from it to neighbouring areas.Pottery making began in the 7th millennium BC. The earliest forms, which were found at the Hassuna site, were hand formed from slabs, undecorated, unglazed low-fired pots made from reddish-brown clays. Within the next millennium, wares were decorated.

Pottery. with elaborate painted designs and natural forms, incising and burnished.The invention of the potter's wheel in Mesopotamia sometime between 6000 and 4000 BC (Ubaid period) revolutionized pottery production. Newer kiln designs could fire wares to 1050 (C) to 1200 (C) which enabled new possibilities and new preparation of clays. Production was now carried out by small groups of potters for small cities, rather than individuals making wares for a family. The shapes and range of uses for ceramics and pottery expanded beyond simple vessels to store and carry to specialized cooking utensils, pot stands and rat traps. As the region.

Pottery. developed, new organizations and political forms, pottery became more elaborate and varied. Some wares were made using moulds, allowing for increased production for the needs of the growing populations. Glazing was commonly used and pottery was more decorated.In the Chalcolithic period in Mesopotamia, Halafian pottery achieved a level of technical competence and sophistication, not seen until the later developments of Greek pottery with Corinthian and Attic ware.## Europe.Europe's oldest pottery, dating from circa 6700 BC, was found on the banks of the Samara River in the middle Volga region of Russia. These sites are known as the Yelshanka culture.The early.

Pottery. inhabitants of Europe developed pottery in the Linear Pottery culture slightly later than the Near East, circa 5500–4500 BC. In the ancient Western Mediterranean elaborately painted earthenware reached very high levels of artistic achievement in the Greek world; there are large numbers of survivals from tombs. Minoan pottery was characterized by complex painted decoration with natural themes. The classical Greek culture began to emerge around 1000 BC featuring a variety of well crafted pottery which now included the human form as a decorating motif. The pottery wheel was now in regular use. Although glazing was known to these potters, it.

Pottery. was not widely used. Instead, a more porous clay slip was used for decoration. A wide range of shapes for different uses developed early and remained essentially unchanged during Greek history.Fine Etruscan pottery was heavily influenced by Greek pottery and often imported Greek potters and painters. Ancient Roman pottery made much less use of painting, but used moulded decoration, allowing industrialized production on a huge scale. Much of the so-called red Samian ware of the Early Roman Empire was in fact produced in modern Germany and France, where entrepreneurs established large potteries. Excavations at Augusta Raurica, near Basel, Switzerland, have.

Pottery. revealed a pottery production site in use from the 1st to the 4th century AD. Pottery was hardly seen on the tables of elites from Hellenistic times until the Renaissance, and most medieval wares were coarse and utilitarian, as the elites ate off metal vessels. Painted Hispano-Moresque ware from Spain, developing the styles of Islamic Spain, became a luxury for late medieval elites, and was adapted in Italy into "maiolica" in the Italian Renaissance. Both of these were faience or tin-glazed earthenware, and fine faience continued to be made until around 1800 in various countries, especially France, with Nevers faience.

Pottery. and several other centres. In the 17th century, imports of Chinese export porcelain and its Japanese equivalent raised the market expectations of fine pottery, and European manufacturers eventually learned to make porcelain, often in the form of "artificial" or soft-paste porcelain, and from the 18th century European porcelain and other wares from a great number of producers became extremely popular, reducing Asian imports.## United Kingdom.The English city of Stoke-on-Trent is widely known as "The Potteries" because of the large number of pottery factories or, colloquially, "Pot Banks". It was one of the first industrial cities of the modern era where,.

Pottery. as early as 1785, two hundred pottery manufacturers employed 20,000 workers. Josiah Wedgwood (1730–1795) was the dominant leader.In North Staffordshire hundreds of companies produced all kinds of pottery, from tablewares and decorative pieces to industrial items. The main pottery types of earthenware, stoneware and porcelain were all made in large quantities, and the Staffordshire industry was a major innovator in developing new varieties of ceramic bodies such as bone china and jasperware, as well as pioneering transfer printing and other glazing and decorating techniques. In general Staffordshire was strongest in the middle and low price ranges, though the finest and.

Pottery. most expensive types of wares were also made.By the late 18th century North Staffordshire was the largest producer of ceramics in Britain, despite significant centres elsewhere. Large export markets took Staffordshire pottery around the world, especially in the 19th century. Production had begun to decline in the late 19th century, as other countries developed their industries, and declined steeply after World War II. Some production continues in the area, but at a fraction of the levels at the peak of the industry.## Islamic pottery.Early Islamic pottery followed the forms of the regions which the Muslims conquered. Eventually, however, there was.

Pottery. cross-fertilization between the regions. This was most notable in the Chinese influences on Islamic pottery. Trade between China and Islam took place via the system of trading posts over the lengthy Silk Road. Islamic nations imported stoneware and later porcelain from China. China imported the minerals for Cobalt blue from the Islamic ruled Persia to decorate their blue and white porcelain, which they then exported to the Islamic world.Likewise, Islamic art contributed to a lasting pottery form identified as Hispano-Moresque in Andalucia (Islamic Spain). Unique Islamic forms were also developed, including fritware, lusterware and specialized glazes like tin-glazing, which led.

Pottery. to the development of the popular maiolica.One major emphasis in ceramic development in the Muslim world was the use of tile and decorative tilework.## Americas.Most evidence points to an independent development of pottery in the Native American cultures, with the earliest known dates from Brazil, from 9,500 to 5,000 years ago and 7,000 to 6,000 years ago. Further north in Mesoamerica, dates begin with the Archaic Era (3500–2000 BC), and into the Formative period (2000 BC – AD 200). These cultures did not develop the stoneware, porcelain or glazes found in the Old World. Maya ceramics include finely painted vessels,.

Pottery. usually beakers, with elaborate scenes with several figures and texts. Several cultures, beginning with the Olmec, made terracotta sculpture, and sculptural pieces of humans or animals that are also vessels are produced in many places, with Moche portrait vessels among the finest.## Africa.Evidence indicates an independent invention of pottery in Sub-Saharan Africa. In 2007, Swiss archaeologists discovered pieces of some of the oldest pottery in Africa at Ounjougou in Central Mali, dating back to at least 9,400 BC. Excavations in the Bosumpra Cave on the Kwahu Plateau in southeastern Ghana, have revealed well-manufactured pottery decorated with channelling and impressed peigne.

Pottery. fileté rigide dating from the early tenth-millennium cal. BC. In later periods, a relationship of the introduction of pot-making in some parts of Sub-Saharan Africa with the spread of Bantu languages has been long recognized, although the details remain controversial and awaiting further research, and no consensus has been reached.Ancient Egyptian pottery begins after 5,000 BC, having spread from the Levant. There were many distinct phases of development in pottery, with very sophisticated wares being produced by the Naqada III period, c. 3,200 to 3,000 BC. During the early Mediterranean civilizations of the fertile crescent, Egypt developed a non-clay-based ceramic.

Pottery. which has come to be called Egyptian faience. A similar type of body is still made in Jaipur in India. During the Umayyad Caliphate of Islam, Egypt was a link between early centre of Islam in the Near East and Iberia which led to the impressive style of pottery.It is valuable to look into pottery as an archaeological record of potential interaction between peoples. When pottery is placed within the context of linguistic and migratory patterns, it becomes an even more prevalent category of social artifact. As proposed by Olivier P. Gosselain, it is possible to understand ranges of cross-cultural.

Pottery. interaction by looking closely at the "chaîne opératoire" of ceramic production.The methods used to produce pottery in early Sub-Saharan Africa are divisible into three categories: techniques visible to the eye (decoration, firing and post-firing techniques), techniques related to the materials (selection or processing of clay, etc.), and techniques of molding or fashioning the clay. These three categories can be used to consider the implications of the reoccurrence of a particular sort of pottery in different areas. Generally, the techniques that are easily visible (the first category of those mentioned above) are thus readily imitated, and may indicate a more distant.

Pottery. connection between groups, such as trade in the same market or even relatively close proximity in settlements. Techniques that require more studied replication (i.e., the selection of clay and the fashioning of clay) may indicate a closer connection between peoples, as these methods are usually only transmissible between potters and those otherwise directly involved in production. Such a relationship requires the ability of the involved parties to communicate effectively, implying pre-existing norms of contact or a shared language between the two. Thus, the patterns of technical diffusion in pot-making that are visible via archaeological findings also reveal patterns in societal.

Pottery. interaction.## Oceania.Polynesia, Melanesia and MicronesiaPottery has been found in archaeological sites across the islands of Oceania. It is attributed to an ancient archaeological culture called the Lapita. Another form of pottery called Plainware is found throughout sites of Oceania. The relationship between Lapita pottery and Plainware is not altogether clear.The Indigenous Australians never developed pottery. After Europeans came to Australia and settled, they found deposits of clay which were analysed by English potters as excellent for making pottery. Less than 20 years later, Europeans came to Australia and began creating pottery. Since then, ceramic manufacturing, mass-produced pottery and studio pottery.

Pottery. have flourished in Australia.## Production issues (health and environment).Although many of the environmental effects of pottery production have existed for millennia, some of these have been amplified with modern technology and scales of production. The principal factors for consideration fall into two categories: (a) effects on workers, and (b) effects on the general environment.The chief risks on worker health include heavy metal poisoning, poor indoor air quality, dangerous sound levels and possible over-illumination.Historically, "plumbism" (lead poisoning) was a significant health concern to those glazing pottery. This was recognised at least as early as the nineteenth century, and the first legislation.

Pottery. in the United Kingdom to limit pottery workers' exposure was introduced in 1899.Proper ventilation to guarantee adequate indoor air quality can reduce or eliminate workers' exposure to fine particulate matter, carbon monoxide, certain heavy metals, and crystalline silica (which can lead to silicosis). A more recent study at Laney College, Oakland, California suggests that all these factors can be controlled in a well-designed workshop environment.The primary environmental concerns include off-site water pollution, air pollution, disposal of hazardous materials, and fuel consumption. Glossary of pottery terms American art pottery Celadon Ceramics of indigenous peoples of the Americas Chinese ceramics including porcelain.

Pottery. Delftware Dipped ware Faience History of ceramic art Ironstone ware Jasperware Korean ceramics Kakiemon pottery Latvian pottery Latgalian pottery Maiolica of Renaissance Italy Majolica Palissy ware Persian pottery Sancai Sea pottery Slipware SylvaC Victorian majolica Cooper, Emmanuel, "10,000 Years of Pottery", 4th ed., 2010, University of Pennsylvania Press, Savage, George, "Pottery Through the Ages", Penguin, 1959, ASTM Standard C 242-01 "Standard Terminology of Ceramic Whitewares and Related Products" Ashmore, Wendy & Sharer, Robert J., (2000). "Discovering Our Past: A Brief Introduction to Archaeology Third Edition". Mountain View, CA: Mayfield Publishing Company. Barnett, William & Hoopes, John (Eds.) (1995). "The Emergence.


Question: Which city or region does this place locate in?

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Schipfe. Schipfe is a residential district in Zürich, Switzerland, located on the eastern slope of the Lindenhof, one of the oldest parts of the Helvetii Oppidum Zürich-Lindenhof, by the river Limmat. Historians and the "Weinplatz" suggest that the district was part of the former civilian harbour of the Celtic-Roman "Turicum". The Swiss studio of famous international artist, Conor Mccreedy is based here in a former Roman townhouse. ## Location.Schipfe belongs to the historic area on the left hand shore of the Limmat, located on the west side of the Lindenhof-Sihlbühl hill downstream from the ancient bridges Münsterbrücke and Rathausbrücke Zürich between.

Schipfe. the present Limmatquai and the prehistoric Lindenhof hill. ## History.The Lindenhof was the site of the Helvetii "Oppidum" and the first century BC Roman settlement (15 BC), with traces of a hypocaustum excavated between Weinplatz and Münsterhof. It was then the historical core of modern Zürich. This is the oldest area of the city, with settlements dating to the pre-Roman La Tène culture, and fortified as "oppidum" with a surrounding Vicus "Turicum" in the final decades of the 1st century BC. In medieval times, the Oetenbach nunnery was located in the district, but was abolished in 1525 and finally demolished.

Schipfe. in 1901/02. The "Uraniastrasse" road and the Urania Sternwarte were later built, and the so-called Waisenhaus Zürich asylum became the headquarters of the Zürich City Police.Today the Schipfe is well known for its romantic houses at the Limmat and several almost hidden shops opposite the Limmatquai.First mentioned in 1292 as «Schüpfi» (German for "where the boats land"), the quarter has a population of 431 distributed on an area less of 0.5 km². Schipfe.ch.


Question: What is this object named after?

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Canopic jar. early Egyptologists with the Greek legend of Canopus – the boat captain of Menelaus on the voyage to Troy – "who was buried at Canopus in the Delta where he was worshipped in the form of a jar". In alternative versions, the name derives from the location Canopus (now Abukir) in the western Nile Delta near Alexandria, where human-headed jars were worshipped as personifications of the god Osiris.Canopic jars of the Old Kingdom were rarely inscribed and had a plain lid. In the Middle Kingdom inscriptions became more usual, and the lids were often in the form of human heads.


Question: What is the closest upper taxonomy of this animal?

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Common box turtle. The common box turtle ("Terrapene carolina") is a species of box turtle with six existing subspecies. It is found throughout the Eastern United States and Mexico. The box turtle has a distinctive hinged lowered shell (the box) that allows it to completely enclose itself. Its upper jaw is long and curved.The turtle is primarily terrestrial and eats a wide variety of plants and animals. The females lay their eggs in the summer. Turtles in the northern part of their range hibernate over the winter.Common box turtle numbers are declining because of habitat loss, roadkill, and capture for the pet trade.

Common box turtle. The species is classified as vulnerable to threats to its survival by the IUCN Red List. Three U.S. states name subspecies of the common box turtle as their official reptile.## Classification."Terrapene carolina" was first described by Carl Linnaeus in his landmark 1758 10th edition of "Systema Naturae". It is the type species for the genus "Terrapene" and has more subspecies than the other three species within that genus. The eastern box turtle subspecies was the one recognized by Linnaeus. The other five subspecies were first classified during the 19th century. In addition, one extinct subspecies, "T. c. putnami", is distinguished.SubspeciesParentheses.

Common box turtle. around the name of an authority indicate that he originally described the subspecies in a genus other than "Terrapene".## Description.The common box turtle ("Terrapene carolina") gets its common name from the structure of its shell which consists of a high domed carapace (upper shell), and large, hinged plastron (lower shell) which allows the turtle to close the shell, sealing its vulnerable head and limbs safely within an impregnable box. The carapace is brown, often adorned with a variable pattern of orange or yellow lines, spots, bars or blotches. The plastron is dark brown and may be uniformly coloured, or show.

Common box turtle. darker blotches or smudges.The common box turtle has a small to moderately sized head and a distinctive hooked upper jaw. The majority of adult male common box turtles have red irises, while those of the female are yellowish-brown. Males also differ from females by possessing shorter, stockier and more curved claws on their hind feet, and longer and thicker tails.There are six living subspecies of the common box turtle, each differing slightly in appearance, namely in the colour and patterning of the carapace, and the possession of either three or four toes on each hind foot. The subspecies "Terrapene carolina.

Common box turtle. triunguis" is particularly distinctive as most males have a bright red head.## Distribution.The common box turtle inhabits open woodlands, road sides, road middles, marshy meadows, floodplains, scrub forests and brushy grasslands in much of the eastern United States, from Maine and Michigan to eastern Texas and south Florida. It was once found in Canada in southern Ontario and is still found in Mexico along the Gulf Coast and in the Yucatán Peninsula. The species range is not continuous as the two Mexican subspecies, "T. c. mexicana" (Mexican box turtle) and "T. c. yucatana" (Yucatán box turtle), are separated from the.

Common box turtle. US subspecies by a gap in western Texas. Three of the US subspecies; "T. c. carolina" (eastern box turtle), "T. c. major" (Gulf Coast box turtle) and "T. c. bauri" (Florida box turtle); occur roughly in the areas indicated by their names. "T. c. triunguis" (three-toed box turtle) is found in the central United States. The species has become extirpated from Ontario and Canada as a whole.## Behavior.Common box turtles are predominantly terrestrial reptiles that are often seen early in the day, or after rain, when they emerge from the shelter of rotting leaves, logs, or a mammal burrow to.

Common box turtle. forage. These turtles have an incredibly varied diet of animal and plant matter, including earthworms, snails, slugs, insects, wild berries, roots, flowers, fungi, fish, frogs, salamanders, snakes, birds, eggs, and sometimes even animal carrion (in the form of dead ducks, amphibians, assorted small mammals, and even a dead cow).In the warmer summer months, common box turtles are more likely to be seen near the edges of swamps or marshlands, possibly in an effort to stay cool. If common box turtles do become too hot, (when their body temperature rises to around 32 °C), they smear saliva over their legs and.

Common box turtle. head; as the saliva evaporates it leaves them comfortably cooler. Similarly, the turtle may urinate on its hind limbs to cool the body parts it is unable to cover with saliva.Courtship in the common box turtle, which usually takes place in spring, begins with a "circling, biting and shoving" phase. These acts are carried out by the male on the female. Following some pushing and shell-biting, the male grips the back of the female's shell with his hind feet to enable him to lean back, slightly beyond the vertical, and mate with the female. Remarkably, female common box turtles can.

Common box turtle. store sperm for up to four years after mating, and thus do not need to mate each year.In May, June or July, females normally lay a clutch of 1 to 11 eggs into a flask-shaped nest excavated in a patch of sandy or loamy soil. After 70 to 80 days of incubation, the eggs hatch, and the small hatchlings emerge from the nest in late summer. In the northern parts of its range, the common box turtle may enter hibernation in October or November. They burrow into loose soil, sand, vegetable matter, or mud at the bottom of streams and.

Common box turtle. pools, or they may use a mammal burrow, and will remain in their chosen shelter until the cold winter has passed. The common box turtle has been known to attain the greatest lifespan of any vertebrate outside of the tortoises. One specimen lived to be at least 138 years of age.## Human interaction.## Conservation.Although the common box turtle has a wide range and was once considered common, many populations are in decline as a result of a number of diverse threats. Agricultural and urban development is destroying habitat, while human fire management is degrading it. Development brings with it an.

Common box turtle. additional threat in the form of increased infrastructure, as common box turtles are frequently killed on roads and highways. Collection for the international pet trade may also impact populations in some areas. The life history characteristics of the common box turtle (long lifespan and slow reproductive rate) make it particularly vulnerable to such threats. The common box turtle is therefore classified as a vulnerable species on the IUCN Red List. The common box turtle is also listed on Appendix II of the Convention on International Trade in Endangered Species (CITES), meaning that international trade in this species should be carefully.

Common box turtle. monitored to ensure it is compatible with the species' survival. In addition, many U.S. states now regulate or prohibit the taking of this species.This species also occurs in a number of protected areas, some of which are large enough to protect populations from the threat of development, while it may also occur in the Sierra del Abra Tanchipa Biosphere Reserve, Mexico. Conservation recommendations for the common box turtle include establishing management practices during urban developments that are sympathic to this species, as well as further research into its life history and the monitoring of populations.## State reptiles.Common box turtles are.

Common box turtle. official state reptiles of four U.S. states. North Carolina and Tennessee honor the eastern box turtle, Missouri names the three-toed box turtle, and Kansas adopted the ornate box turtle in 1986.In Pennsylvania, the eastern box turtle made it through one house of the legislature, but failed to win final naming in 2009. In Virginia, bills to honor the eastern box turtle failed in 1999 and then in 2009. Although a sponsor of the original failed 1998 bill, in 2009, Delegate Frank Hargrove, of Hanover, asked why Virginia would make an official emblem of an animal that retreats into its shell.

Common box turtle. when frightened and dies by the thousands crawling across roads. However, the main problem in Virginia was that the creature was too closely linked to neighbor state North Carolina.


Question: Who is the discoverer or inventor of this object?

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Fresnel lens. A Fresnel lens ( ; ; or ) is a type of composite compact lens developed by the French physicist Augustin-Jean Fresnel (1788–1827) for use in lighthouses. It has been called "the invention that saved a million ships."The design allows the construction of lenses of large aperture and short focal length without the mass and volume of material that would be required by a lens of conventional design. A Fresnel lens can be made much thinner than a comparable conventional lens, in some cases taking the form of a flat sheet. The simpler dioptric (purely refractive) form of the lens.

Fresnel lens. was first proposed by Count Buffon and independently reinvented by Fresnel. The "catadioptric" form of the lens, entirely invented by Fresnel, has outer elements that use total internal reflection as well as refraction; it can capture more oblique light from a light source and add it to the beam of a lighthouse, making the light visible from greater distances.## Description.The Fresnel lens reduces the amount of material required compared to a conventional lens by dividing the lens into a set of concentric annular sections. An ideal Fresnel lens would have an infinite number of sections. In each section, the overall.

Fresnel lens. thickness is decreased compared to an equivalent simple lens. This effectively divides the continuous surface of a standard lens into a set of surfaces of the same curvature, with stepwise discontinuities between them.In some lenses, the curved surfaces are replaced with flat surfaces, with a different angle in each section. Such a lens can be regarded as an array of prisms arranged in a circular fashion with steeper prisms on the edges and a flat or slightly convex center. In the first (and largest) Fresnel lenses, each section was actually a separate prism. 'Single-piece' Fresnel lenses were later produced, being.

Fresnel lens. used for automobile headlamps, brake, parking, and turn signal lenses, and so on. In modern times, computer-controlled milling equipment (CNC) or 3-D printers might be used to manufacture more complex lenses.Fresnel lens design allows a substantial reduction in thickness (and thus mass and volume of material) at the expense of reducing the imaging quality of the lens, which is why precise imaging applications such as photography usually still use larger conventional lenses.Fresnel lenses are usually made of glass or plastic; their size varies from large (old historical lighthouses, meter size) to medium (book-reading aids, OHP viewgraph projectors) to small (TLR/SLR.

Fresnel lens. camera screens, micro-optics). In many cases they are very thin and flat, almost flexible, with thicknesses in the 1 to 5 (mm) range.Most modern Fresnel lenses consist only of refractive elements. Lighthouse lenses, however, tend to include both refracting and reflecting elements, the latter being "outside" the metal rings seen in the photographs. While the inner elements are sections of refractive lenses, the outer elements are reflecting prisms, each of which performs two refractions and one total internal reflection, avoiding the light loss that occurs in reflection from a silvered mirror.## Lighthouse lens sizes.Fresnel designed six sizes of lighthouse lenses,.

Fresnel lens. divided into four "orders" based on their size and focal length. In modern use, these are classified as first through sixth order. An intermediate size between third and fourth order was added later, as well as sizes above first order and below sixth.A first-order lens has a focal length of 920 (mm) and stands about 2.59 (m) high, and 1.8 (m) wide. The smallest (sixth) order has a focal length of 150 (mm) and a height of 433 (mm).The largest Fresnel lenses are called hyperradiant (or hyper-radial). One such lens was on hand when it was decided to build and.

Fresnel lens. outfit the Makapuu Point Light in Hawaii. Rather than order a new lens, the huge optic construction, 12 (ft) tall and with over a thousand prisms, was used there.## Types.There are two main types of Fresnel lens: "imaging" and "non-imaging". Imaging Fresnel lenses use segments with curved cross-sections and produce sharp images, while non-imaging lenses have segments with flat cross-sections, and do not produce sharp images. As the number of segments increases, the two types of lens become more similar to each other. In the abstract case of an infinite number of segments, the difference between curved and flat segments.

Fresnel lens. disappears.Spherical: A spherical Fresnel lens is equivalent to a simple spherical lens, using ring-shaped segments that are each a portion of a sphere, that all focus light on a single point. This type of lens produces a sharp image, although not quite as clear as the equivalent simple spherical lens due to diffraction at the edges of the ridges.Cylindrical: A cylindrical Fresnel lens is equivalent to a simple cylindrical lens, using straight segments with circular cross-section, focusing light on a single line. This type produces a sharp image, although not quite as clear as the equivalent simple cylindrical lens due.

Fresnel lens. to diffraction at the edges of the ridges.Spot: A non-imaging spot Fresnel lens uses ring-shaped segments with cross sections that are straight lines rather than circular arcs. Such a lens can focus light on a small spot, but does not produce a sharp image. These lenses have application in solar power, such as focusing sunlight on a solar panel. Fresnel lenses may be used as components of Köhler illumination optics resulting in very effective nonimaging optics Fresnel-Köhler (FK) solar concentrators.Linear: A non-imaging linear Fresnel lens uses straight segments whose cross sections are straight lines rather than arcs. These lenses focus.

Fresnel lens. light into a narrow band. They do not produce a sharp image, but can be used in solar power, such as for focusing sunlight on a pipe, to heat the water within.## Uses.## Imaging.Fresnel lenses are used as simple hand-held magnifiers. They are also used to correct several visual disorders, including ocular-motility disorders such as strabismus. Fresnel lenses have been used to increase the visual size of CRT displays in pocket televisions, notably the Sinclair TV80. They are also used in traffic lights.Fresnel lenses are used in left-hand-drive European lorries entering the UK and Republic of Ireland (and vice versa,.

Fresnel lens. right-hand-drive Irish and British trucks entering mainland Europe) to overcome the blind spots caused by the driver operating the lorry while sitting on the wrong side of the cab relative to the side of the road the car is on. They attach to the passenger-side window.Another automobile application of a Fresnel lens is a rear view enhancer, as the wide view angle of a lens attached to the rear window permits examining the scene behind a vehicle, particularly a tall or bluff-tailed one, more effectively than a rear-view mirror alone.Multi-focal Fresnel lenses are also used as a part of retina.

Fresnel lens. identification cameras, where they provide multiple in- and out-of-focus images of a fixation target inside the camera. For virtually all users, at least one of the images will be in focus, thus allowing correct eye alignment.Fresnel lenses have also been used in the field of popular entertainment. The British rock artist Peter Gabriel made use of them in his early solo live performances to magnify the size of his head, in contrast to the rest of his body, for dramatic and comic effect. In the Terry Gilliam film "Brazil", plastic Fresnel screens appear ostensibly as magnifiers for the small CRT.

Fresnel lens. monitors used throughout the offices of the Ministry of Information. However, they occasionally appear between the actors and the camera, distorting the scale and composition of the scene to humorous effect. The Pixar movie Wall-E features a Fresnel lens in the scenes where the protagonist watches the musical Hello, Dolly! magnified on an iPod.## Photography.Canon and Nikon have used Fresnel lenses to reduce the size of telephoto lenses. Photographic lenses that include Fresnel elements can be much shorter than corresponding conventional lens design. Nikon calls the technology "Phase Fresnel".The Polaroid SX-70 camera used a Fresnel reflector as part of its.

Fresnel lens. viewing system.View and large format cameras can utilize a Fresnel lens in conjunction with the ground glass, to increase the perceived brightness of the image projected by a lens onto the ground glass, thus aiding in adjusting focus and composition.## Illumination.High-quality glass Fresnel lenses were used in lighthouses, where they were considered state of the art in the late 19th and through the middle of the 20th centuries; most lighthouses have now retired glass Fresnel lenses from service and replaced them with much less expensive and more durable aerobeacons, which themselves often contain plastic Fresnel lenses. Lighthouse Fresnel lens systems.

Fresnel lens. typically include extra annular prismatic elements, arrayed in faceted domes above and below the central planar Fresnel, in order to catch all light emitted from the light source. The light path through these elements can include an internal reflection, rather than the simple refraction in the planar Fresnel element. These lenses conferred many practical benefits upon the designers, builders, and users of lighthouses and their illumination. Among other things, smaller lenses could fit into more compact spaces. Greater light transmission over longer distances, and varied patterns, made it possible to triangulate a position.Perhaps the most widespread use of Fresnel lenses,.

Fresnel lens. for a time, occurred in automobile headlamps, where they can shape the roughly parallel beam from the parabolic reflector to meet requirements for dipped and main-beam patterns, often both in the same headlamp unit (such as the European H4 design). For reasons of economy, weight, and impact resistance, newer cars have dispensed with glass Fresnel lenses, using multifaceted reflectors with plain polycarbonate lenses. However, Fresnel lenses continue in wide use in automobile tail, marker, and reversing lights.Glass Fresnel lenses also are used in lighting instruments for theatre and motion pictures (see Fresnel lantern); such instruments are often called simply "Fresnels".

Fresnel lens. The entire instrument consists of a metal housing, a reflector, a lamp assembly, and a Fresnel lens. Many Fresnel instruments allow the lamp to be moved relative to the lens' focal point, to increase or decrease the size of the light beam. As a result, they are very flexible, and can often produce a beam as narrow as 7° or as wide as 70°. The Fresnel lens produces a very soft-edged beam, so is often used as a wash light. A holder in front of the lens can hold a colored plastic film ("gel") to tint the light or wire.

Fresnel lens. screens or frosted plastic to diffuse it. The Fresnel lens is useful in the making of motion pictures not only because of its ability to focus the beam brighter than a typical lens, but also because the light is a relatively consistent intensity across the entire width of the beam of light.Aircraft carriers and naval air stations typically use Fresnel lenses in their optical landing systems. The "meatball" light aids the pilot in maintaining proper glide slope for the landing. In the center are amber and red lights composed of Fresnel lenses. Although the lights are always on, the angle.

Fresnel lens. of the lens from the pilot's point of view determines the color and position of the visible light. If the lights appear above the green horizontal bar, the pilot is too high. If it is below, the pilot is too low, and if the lights are red, the pilot is very low.Fresnel lenses are also commonly used in searchlights, spotlights, and flashlights.## Projection.The use of Fresnel lenses for image projection reduces image quality, so they tend to occur only where quality is not critical or where the bulk of a solid lens would be prohibitive. Cheap Fresnel lenses can be.

Fresnel lens. stamped or molded of transparent plastic and are used in overhead projectors and projection televisions.Fresnel lenses of different focal lengths (one collimator, and one collector) are used in commercial and DIY projection. The collimator lens has the lower focal length and is placed closer to the light source, and the collector lens, which focuses the light into the triplet lens, is placed after the projection image (an active matrix LCD panel in LCD projectors). Fresnel lenses are also used as collimators in overhead projectors.## Solar power.Since plastic Fresnel lenses can be made larger than glass lenses, as well as being.

Fresnel lens. much cheaper and lighter, they are used to concentrate sunlight for heating in solar cookers, in solar forges, and in solar collectors used to heat water for domestic use. They can also be used to generate steam or to power a Stirling engine.Fresnel lenses can concentrate sunlight onto solar cells with a ratio of almost 500:1. This allows the active solar-cell surface to be reduced, lowering cost and allowing the use of more efficient cells that would otherwise be too expensive. In the early 21st century, Fresnel reflectors began to be used in concentrating solar power (CSP) plants to concentrate.

Fresnel lens. solar energy. One application was to preheat water at the coal-fired Liddell Power Station, in Hunter Valley Australia.Fresnel lenses can be used to sinter sand, allowing 3D printing in glass.## History.## Forerunners.Augustin-Jean Fresnel was not the first person to focus a lighthouse beam using a lens. That distinction apparently belongs to the London glass-cutter Thomas Rogers, who proposed the idea to Trinity House in 1788. The first Rogers lenses, 53cm in diameter and 14cm thick at the center, were installed at the Old Lower Lighthouse at Portland Bill in 1789. Behind each lamp was a back-coated spherical glass mirror, which.

Fresnel lens. reflected rear radiation back through the lamp and into the lens. Further samples were installed at Howth Baily, North Foreland, and at least four other locations by 1804. But much of the light was wasted by absorption in the glass.Nor was Fresnel the first to suggest replacing a convex lens with a series of concentric annular prisms, to reduce weight and absorption. In 1748, Count Buffon proposed grinding such prisms as steps in a single piece of glass. In 1790 (although secondary sources give the date as 1773 or 1788), the Marquis de Condorcet suggested that it would be easier.

Fresnel lens. to make the annular sections separately and assemble them on a frame; but even that was impractical at the time. These designs were intended not for lighthouses, but for burning glasses. David Brewster, however, proposed a system similar to Condorcet's in 1811, and by 1820 was advocating its use in British lighthouses.## Fresnel's contributions.The French (Commission of Lighthouses) was established by Napoleon in 1811, and placed under the authority of Fresnel's employer, the Corps of Bridges and Roads. As the members of the commission were otherwise occupied, it achieved little in its early years. But on 21 June 1819—three months.

Fresnel lens. after winning the physics of the Academy of Sciences for his celebrated memoir on diffraction—Fresnel was "temporarily" seconded to the commission on the recommendation of François Arago (a member since 1813), to review possible improvements in lighthouse illumination.By the end of August 1819, unaware of the Buffon-Condorcet-Brewster proposal, Fresnel made his first presentation to the commission, recommending what he called ('lenses by steps') to replace the reflectors then in use, which reflected only about half of the incident light. Much to Fresnel's embarrassment, one of the assembled commissioners, Jacques Charles, recalled Buffon's suggestion. However, whereas Buffon's version was biconvex and.

Fresnel lens. in one piece, Fresnel's was plano-convex and made of multiple prisms for easier construction. With an official budget of 500 francs, Fresnel approached three manufacturers. The third, François Soleil, found a way to remove defects by reheating and remolding the glass. Arago assisted Fresnel with the design of a modified Argand lamp with concentric wicks (a concept that Fresnel attributed to Count Rumford), and accidentally discovered that fish glue was heat-resistant, making it suitable for use in the lens. The prototype, finished in March 1820, had a square lens panel 55cm on a side, containing 97 polygonal (not annular) prisms—and.

Fresnel lens. so impressed the Commission that Fresnel was asked for a full eight-panel version. This model, completed a year later in spite of insufficient funding, had panels 76cm square. In a public spectacle on the evening of 13 April 1821, it was demonstrated by comparison with the most recent reflectors, which it suddenly rendered obsolete.Soon after this demonstration, Fresnel published the idea that light, including apparently unpolarized light, consists exclusively of transverse waves, and went on to consider the implications for double refraction and partial reflection.Fresnel acknowledged the British lenses and Buffon's invention in a memoir read on 29 July 1822.

Fresnel lens. and printed in the same year. The date of that memoir may be the source of the claim that Fresnel's lighthouse advocacy began two years later than Brewster's; but the text makes it clear that Fresnel's involvement began no later than 1819.Fresnel's next lens was a rotating apparatus with eight "bull's-eye" panels, made in annular arcs by Saint-Gobain, giving eight rotating beams—to be seen by mariners as a periodic flash. Above and behind each main panel was a smaller, sloping bull's-eye panel of trapezoidal outline with trapezoidal elements. This refracted the light to a sloping plane mirror, which then reflected.

Fresnel lens. it horizontally, 7 degrees ahead of the main beam, increasing the duration of the flash. Below the main panels were 128 small mirrors arranged in four rings, stacked like the slats of a louver or Venetian blind. Each ring, shaped like a frustum of a cone, reflected the light to the horizon, giving a fainter steady light between the flashes. The official test, conducted on the unfinished on 20 August 1822, was witnessed by the Commission—and by Louis XVIII and his entourage—from 20 (mi) away. The apparatus was stored at Bordeaux for the winter, and then reassembled at Cordouan Lighthouse.

Fresnel lens. under Fresnel's supervision—in part by Fresnel's own hands. On 25 July 1823, the world's first lighthouse Fresnel lens was lit. As expected, the light was visible to the horizon, more than 20 (mi) out.The day before the test of the Cordouan lens in Paris, a committee of the Academy of Sciences reported on Fresnel's memoir and supplements on double refraction—which, although less well known to modern readers than his earlier work on diffraction, struck a more decisive blow for the wave theory of light. Between the test and the reassembly at Cordouan, Fresnel submitted his papers on photoelasticity (16 September.

Fresnel lens. 1822), elliptical and circular polarization and optical rotation (9 December), and partial reflection and total internal reflection (7 January 1823), essentially completing his reconstruction of physical optics on the transverse wave hypothesis. Shortly after the Cordouan lens was lit, Fresnel started coughing up blood.In May 1824, Fresnel was promoted to Secretary of the , becoming the first member of that body to draw a salary, albeit in the concurrent role of Engineer-in-Chief. Late that year, being increasingly ill, he curtailed his fundamental research and resigned his seasonal job as an examiner at the , in order to save his remaining.

Fresnel lens. time and energy for his lighthouse work.In the same year he designed the first "fixed" lens—for spreading light evenly around the horizon while minimizing waste above or below. Ideally the curved refracting surfaces would be segments of toroids about a common vertical axis, so that the dioptric panel would look like a cylindrical drum. If this was supplemented by reflecting (catoptric) rings above and below the refracting (dioptric) parts, the entire apparatus would look like a beehive. The second Fresnel lens to enter service was indeed a fixed lens, of third order, installed at Dunkirk by 1 February 1825. However,.

Fresnel lens. due to the difficulty of fabricating large toroidal prisms, this apparatus had a 16-sided polygonal plan.In 1825 Fresnel extended his fixed-lens design by adding a rotating array outside the fixed array. Each panel of the rotating array was to refract part of the fixed light from a horizontal fan into a narrow beam.Also in 1825, Fresnel unveiled the ('lighthouse map'), calling for a system of 51 lighthouses plus smaller harbor lights, in a hierarchy of lens sizes called "orders" (the first being the largest), with different characteristics to facilitate recognition: a constant light (from a fixed lens), one flash per.

Fresnel lens. minute (from a rotating lens with eight panels), and two per minute (16 panels).In late 1825, to reduce the loss of light in the reflecting elements, Fresnel proposed to replace each mirror with a catadioptric prism, through which the light would travel by refraction through the first surface, then total internal reflection off the second surface, then refraction through the third surface. The result was the lighthouse lens as we now know it. In 1826 he assembled a small model for use on the , but he did not live to see a full-sized version: he died on 14 July.

Fresnel lens. 1827, at the age of 39.## After Fresnel.The first stage of the development of lighthouse lenses after the death of Augustin Fresnel consisted in the implementation of his designs. This was driven in part by his younger brother Léonor—who, like Augustin, was trained as a civil engineer but, unlike Augustin, had a strong aptitude for management. Léonor entered the service of the Lighthouse Commission in 1825, and went on to succeed Augustin as Secretary.The first fixed lens to be constructed with toroidal prisms was a first-order apparatus designed by the Scottish engineer Alan Stevenson under the guidance of Léonor Fresnel,.

Fresnel lens. and fabricated by Isaac Cookson & Co. using French glass; it entered service at the Isle of May, Scotland, on 22 September 1836. The first large catadioptric lenses were made in 1842 for the lighthouses at Gravelines and Île Vierge, France; these were fixed third-order lenses whose catadioptric rings (made in segments) were one metre in diameter. Stevenson's first-order Skerryvore lens, lit in 1844, was only partly catadioptric; it was similar to the Cordouan lens except that the lower slats were replaced by French-made catadioptric prisms, while mirrors were retained at the top. The first "fully" catadioptric first-order lens, installed.

Fresnel lens. at Pointe d'Ailly in 1852, also gave eight rotating beams plus a fixed light at the bottom; but its top section had eight catadioptric panels focusing the light about 4 degrees ahead of the main beams, in order to lengthen the flashes. The first fully catadioptric lens with "purely revolving" beams—also of first order—was installed at Saint-Clément-des-Baleines in 1854, and marked the completion of Augustin Fresnel's original "Carte des Phares".Thomas Stevenson (younger brother of Alan) went a step beyond Fresnel with his "holophotal" lens, which focused the light radiated by the lamp in nearly all directions, forward or backward, into.

Fresnel lens. a single beam. The first version, described in 1849, consisted of a standard Fresnel bull's-eye lens, a paraboloidal reflector, and a rear hemispherical reflector (functionally equivalent to the Rogers mirror of 60 years earlier, except that it subtended a whole hemisphere). Light radiated into the forward hemisphere but missing the bull's-eye lens was deflected by the paraboloid into a parallel beam surrounding the bull's-eye lens, while light radiated into the backward hemisphere was reflected back through the lamp by the spherical reflector (as in Rogers' arrangement), to be collected by the forward components. The first unit was installed at North.

Fresnel lens. Harbour, Peterhead, in August 1849. Stevenson called this version a "catadioptric holophote", although each of its elements was either purely reflective or purely refractive. In the second version of the holophote concept, the bull's-eye lens and paraboloidal reflector were replaced by a catadioptric Fresnel lens—as conceived by Fresnel, but expanded to cover the whole forward hemisphere. The third version, which Stevenson confusingly called a "dioptric holophote", was more innovative: it retained the catadioptric Fresnel lens for the front hemisphere, but replaced the rear hemispherical reflector with a hemispherical array of annular prisms, each of which used "two" total internal reflections.

Fresnel lens. to turn light diverging from the center of the hemisphere back toward the center. The result was an all-glass holophote, with no losses from metallic reflections.James Timmins Chance modified Thomas Stevenson's all-glass holophotal design by arranging the double-reflecting prisms about a vertical axis. The prototype was shown at the 1862 International Exhibition in London. Later, to ease manufacturing, Chance divided the prisms into segments, and arranged them in a cylindrical form while retaining the property of reflecting light from a single point back to that point. Reflectors of this form, paradoxically called "dioptric mirrors", proved particularly useful for returning light.

Fresnel lens. from the landward side of the lamp to the seaward side.As lighthouses proliferated, they became harder to distinguish from each other, leading to the use of colored filters, which wasted light. In 1884, John Hopkinson eliminated the need for filters by inventing the "group-flashing" lens, in which the dioptric and/or the catadioptric panels were split so as to give multiple flashes—allowing lighthouses to be identified not only by frequency of flashes, but also by multiplicity of flashes. Double-flashing lenses were installed at Tampico (Mexico) and Little Basses (Sri Lanka) in 1875, and a triple-flashing lens at Casquets Lighthouse (Channel Islands).

Fresnel lens. in 1876. The example shown (right) is the double-flashing lens of the Point Arena Light, which was in service from 1908 to 1977.The development of hyper-radial lenses was driven in part by the need for larger light sources, such as gas lights with multiple jets, which required a longer focal length for a given beam-width, hence a larger lens to collect a given fraction of the generated light. The first hyper-radial lens was built for the Stevensons in 1885 by F. Barbier & Cie of France, and tested at South Foreland Lighthouse with various light sources. Chance Brothers (Hopkinson's employers).

Fresnel lens. then began constructing hyper-radials, installing their first at Bishop Rock Lighthouse in 1887. In the same year, Barbier installed a hyper-radial at Tory Island. But only about 30 hyper-radials went into service before the development of more compact bright lamps rendered such large optics unnecessary (see "Hyperradiant Fresnel lens").Production of one-piece stepped dioptric lenses—roughly as envisaged by Buffon—became feasible in 1852, when John L. Gilliland of the Brooklyn Flint-Glass Company patented a method of making lenses from pressed and molded glass. The company made small bull's-eye lenses for use on railroads, steamboats, and docks; such lenses were common in the.

Fresnel lens. United States by the 1870s. In 1858 the company produced "a very small number of pressed flint-glass sixth-order lenses" for use in lighthouses—the first Fresnel lighthouse lenses made in America. By the 1950s, the substitution of plastic for glass made it economic to use Fresnel lenses as condensers in overhead projectors. Fresnel imager Fresnel zone plate Lenticular lens Linear Fresnel reflector Prism lighting − Fresnel anidolic optics M. Born and E. Wolf, "Principles of Optics", 7th Ed., Cambridge, 1999. G.-A. Boutry, 1948, "Augustin Fresnel: His time, life and work, 1788–1827", "Science Progress", vol. 36, no. 144 (October 1948), pp. 587–604;.

Fresnel lens. jstor.org/stable/43413515. J.Z. Buchwald, 1989, "The Rise of the Wave Theory of Light: Optical Theory and Experiment in the Early Nineteenth Century", University of Chicago Press, . J. Elton, 2009, "A Light to Lighten our Darkness: Lighthouse Optics and the Later Development of Fresnel's Revolutionary Refracting Lens 1780–1900", "International Journal for the History of Engineering & Technology", vol. 79, no. 2 (July 2009), pp. 183–244; . A. Fresnel, 1822, "Mémoire sur un nouveau système d'éclairage des phares", read 29 July 1822; reprinted in Fresnel, 1866–70, vol. 3, pp. 97–126; translated by T. Tag as "Memoir upon a new system of lighthouse.

Fresnel lens. illumination", U.S. Lighthouse Society, accessed 26 August 2017; archived 19 August 2016. (Cited page numbers refer to the translation.) A. Fresnel (ed. H. de Sénarmont, E. Verdet, and L. Fresnel), 1866–70, "Oeuvres complètes d'Augustin Fresnel" (3 vols.), Paris: Imprimerie Impériale; vol. 1 (1866), vol. 2 (1868), vol. 3 (1870). T.H. Levitt, 2013, "A Short Bright Flash: Augustin Fresnel and the Birth of the Modern Lighthouse", New York: W.W. Norton, . T. Young (ed. G. Peacock), 1855, "Miscellaneous Works of the late Thomas Young", London: J. Murray, vol. 1. "The Fresnel Lens", "The Keeper's Log", Winter 1985, pp. 12–14. U.S. Coast.

Fresnel lens. Guard, "Aids to Navigation", Washington, DC: U.S. Government Printing Office, 1945. U.S. Coast Guard, "Lighthouses, Lenses, Illuminants, Engineering, & Augustin Fresnel: A Historical Bibliography on Works Published Through 2007". United States Lighthouse Society, especially "Fresnel Lenses". W.A. Britten, "The Fresnel lens" (with photographs). J. Francis, "Fresnel Lens - Maxwell Simulation", 13 April 2009. J. Hare, "How the Fresnel lens works" (5-minute video), Vega Science Trust, 2008.


Question: What is the weight of a female of this bird in kilogram?

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Coscoroba swan. the South American Classification Committee of the American Ornithological Society, the International Ornithological Committee (IOC), and the Clements taxonomy treat the Cape Barren goose as basal to other geese, which themselves precede the coscoroba and other swans in a linear sequence. Even those three systems differ, with the IOC placing the coscoroba before "Cygnus" and the other two after it in their lists.The coscoroba swan is the only member of genus "Coscoroba" and has no subspecies.## Description.The coscoroba is the smallest swan at 90 to 115 (cm) long with a wingspan of about 155 (cm). Males weigh 3.8 to 5.4.


Question: What is the street address of this building?

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Fontaines de la Concorde. The Fontaines de la Concorde are two monumental fountains located in the Place de la Concorde in the center of Paris. They were designed by Jacques Ignace Hittorff, and completed in 1840 during the reign of King Louis-Philippe. The south fountain commemorates the maritime commerce and industry of France, and the north fountain commemorates navigation and commerce on the rivers of France.## History.Before the French Revolution, during the period 1753–1772, when the square was called Place Louis XV, the architect Jacques-Ange Gabriel designed a plan for a monumental statue of Louis XV with two fountains, but because of a lack.

Fontaines de la Concorde. of sufficient water, it was never carried out. Gabriel did complete the building of the Ministry of the Navy overlooking the square - its presence later influenced the choice of themes for the Fontaines de la Concorde.During the French Revolution, the square was renamed Place de la Revolution, the guillotine was placed there, and King Louis XVI and thousands of others were beheaded near the site of the present fountains. In 1795, after the Reign of Terror ended, the square was renamed the Place de la Concorde. After the restoration of the Monarchy in 1816 the square was renamed in.


Question: What is this plant named after?

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Allamanda. Allamanda is a genus of flowering plants in the family Apocynaceae. They are native to the Americas, where they are distributed from Mexico to Argentina. Some species are familiar as ornamental plants cultivated for their large, colorful flowers. Most species produce yellow flowers; "A. blanchetii" bears pink flowers. The genus name "Allamanda" honors the Swiss botanist and physician Frédéric-Louis Allamand (1736–1809). It is the official flower of Kuching North City Hall.## Description.Plants of the genus are evergreen trees, shrubs, or vines. They contain a white latex. The leaves are opposite or arranged in whorls of up to 5. The blades.


Question: Which city or region does this place locate in?

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Histria (ancient city). establishment, with fishing and agriculture as additional sources of income. By 100 AD, however, fishing had become the main source of Istrian revenue.Around 30 AD, Histria came under Roman domination. During the Roman period from the 1st to 3rd centuries AD, temples were built for the Roman gods, besides a public bath and houses for the wealthy. Altogether, it was in continuous existence for some 14 centuries, starting with the Greek period up to the Roman-Byzantine period. The Halmyris bay where was the city founded was closed by sand deposits and access to the Black Sea gradually was cut. Trade.

Histria (ancient city). continued until the 6th century AD. The invasion of the Avars and the Slavs in the 7th century AD almost entirely destroyed the fortress, and the Istrians dispersed; the name and the city disappeared.## Geographic setting.Ancient Histria was situated on a peninsula, about 5 (km) east of the modern Romanian commune of Istria, on the Dobruja coast. The ancient seashore has since been transformed into the western shore of Sinoe Lake, as the Danube's silt deposits formed a shoal which closed off the ancient coastline. The current Sinoe Lake was at the time the open northern bay, while another bay.

Histria (ancient city). upon that which was in alliance with Rome, and had suffered many disasters in return. 2 For after ravaging the possessions of the Dardanians and their neighbours, he did not dare to await their attack, but pretending to retire with his cavalry for some other purpose, took to flight; in this way the enemy surrounded his infantry and forcibly drove them out of the country, even taking away their plunder from them. 3 When he tried the same tactics on the allies in Moesia, he was defeated near the city of the Istrians by the Bastarnian Scythians who came to.


Question: What is the closest upper taxonomy of this bird?

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Osprey. The osprey (Pandion haliaetus), also called sea hawk, river hawk, and fish hawk, is a diurnal, fish-eating bird of prey with a cosmopolitan range. It is a large raptor reaching more than 60 (cm) in length and 180 (cm) across the wings. It is brown on the upperparts and predominantly greyish on the head and underparts.The osprey tolerates a wide variety of habitats, nesting in any location near a body of water providing an adequate food supply. It is found on all continents except Antarctica, although in South America it occurs only as a non-breeding migrant.As its other common names.

Osprey. suggest, the osprey's diet consists almost exclusively of fish. It possesses specialised physical characteristics and exhibits unique behaviour to assist in hunting and catching prey. As a result of these unique characteristics, it has been given its own taxonomic genus, "Pandion", and family, Pandionidae.## Taxonomy.The osprey was described by Carl Linnaeus under the name "Falco haliaeetus" in his landmark 1758 10th edition of "Systema Naturae". The genus, "Pandion", is the sole member of the family Pandionidae, and used to contain only one species, the osprey ("P. haliaetus"). The genus "Pandion" was described by the French zoologist Marie Jules César Savigny.

Osprey. in 1809. It has always presented something of a riddle to taxonomists, but here it is treated as the sole living member of the family Pandionidae, and the family listed in its traditional place as part of the order Falconiformes.Other schemes place it alongside the hawks and eagles in the family Accipitridae—which itself can be regarded as making up the bulk of the order Accipitriformes or else be lumped with the Falconidae into Falconiformes. The Sibley-Ahlquist taxonomy has placed it together with the other diurnal raptors in a greatly enlarged Ciconiiformes, but this results in an unnatural paraphyletic classification.The osprey.

Osprey. is unusual in that it is a single living species that occurs nearly worldwide. Even the few subspecies are not unequivocally separable. There are four generally recognised subspecies, although differences are small, and ITIS lists only the first two. "Pandion haliaetus haliaetus" – : the nominate subspecies, occurring in the Palearctic realm. "P. haliaetus carolinensis" – : mainland Americas. This form is larger, darker bodied and has a paler breast than the type of the first description. "P. haliaetus ridgwayi" – : Caribbean islands. This form has a very pale head and breast compared with nominate "haliaetus", with only a.

Osprey. weak eye mask. It is non-migratory. Its scientific name commemorates American ornithologist Robert Ridgway. "P. haliaetus cristatus" – : coastline and some large rivers of Australia and Tasmania. The smallest and most distinctive subspecies, also non-migratory. Some authorities have assigned it full species status as "Pandion cristatus", known as the eastern osprey.## Fossil record.To date there have been two extinct species named from the fossil record. "Pandion homalopteron" was named by Stuart L. Warter in 1976 from fossils of Middle Miocene, Barstovian age, found in marine deposits in the southern part of California. The second named species "Pandion lovensis", was.

Osprey. described in 1985 by Jonathan J. Becker from fossils found in Florida and dating to the latest Clarendonian and possibly representing a separate lineage from that of "P. homalopteron" and "P. haliaetus". A number of claw fossils have been recovered from Pliocene and Pleistocene sediments in Florida and South Carolina.The oldest recognized family Pandionidae fossils have been recovered from the Oligocene age Jebel Qatrani Formation, of Faiyum, Egypt. However they are not complete enough to assign to a specific genus. Another Pandionidae claw fossil was recovered from Early Oligocene deposits in the Mainz basin, Germany, and was described in 2006.

Osprey. by Gerald Mayr.## Etymology.The genus name "Pandion" derives from "Pandíōn" , the mythical Greek king of Athens and grandfather of Theseus, Pandion II. Although Pandion II was not used to name a bird of prey, Nisus, a king of Megara, was used for the genus. The species name "haliaetus" () comes from Greek "haliáetos" "sea-eagle" (also "haliaietos") from the combining form "hali-" of "hals" "sea" and "aetos", "eagle".The origins of "osprey" are obscure; the word itself was first recorded around 1460, derived via the Anglo-French "ospriet" and the Medieval Latin "avis prede" "bird of prey," from the Latin "avis praedae.

Osprey. - 300 (g) and about 25 - 35 (cm) in length, but virtually any type of fish from 50 (g) to 2 (kg) can be taken. Even larger 2.8 (kg) northern pike ("Esox lucius") has been taken in Russia.Ospreys have vision that is well adapted to detecting underwater objects from the air. Prey is first sighted when the osprey is 10 - 40 (m) above the water, after which the bird hovers momentarily and then plunges feet first into the water. They catch fish by diving into a body of water, oftentimes completely submerging their entire bodies. As an osprey.

Osprey. dives it adjusts the angle of its flight to account for the distortion of the fish's image caused by refraction. Ospreys will typically eat on a nearby perch but have also been known to carry fish for longer distances.Occasionally, the osprey may prey on rodents, rabbits, hares, other mammals, snakes, frogs, birds, salamanders, conchs and crustaceans. Reports of ospreys feeding on carrion are rare. They have been observed eating dead white-tailed deer and Virginia opossum.## Adaptations.The osprey has several adaptations that suit its piscivorous lifestyle: reversible outer toes sharp spicules on the underside of the toes closable nostrils to keep.

Osprey. logging observations on reproductive success.Ospreys usually mate for life. Rarely, polyandry has been recorded. The breeding season varies according to latitude; spring (September–October) in southern Australia, April to July in northern Australia and winter (June–August) in southern Queensland. In spring the pair begins a five-month period of partnership to raise their young. The female lays two to four eggs within a month, and relies on the size of the nest to conserve heat. The eggs are whitish with bold splotches of reddish-brown and are about 6.2 x 4.5 (cm) and weigh about 65 (g). The eggs are incubated for about.

Osprey. the official bird of Södermanland, Sweden. The cap badge of Rhodesia's Selous Scouts (1973-1980) was a stylized osprey. Ospreys are a common feature of First nations artwork in the Pacific Northwest, such as Kwakwakaʼwakw art. They are often used to depict the mythical thunderbird.## Sports.The osprey is used as a brand name for various products and sports teams, such as the Ospreys (a Welsh Rugby team) and Seattle Seahawks (an American football team of the National Football League). The official mascot of athletic teams at the University of North Carolina Wilmington is named Sammy C. Hawk. The Riverhawk is the.

Osprey. over the House microphone. A compromise was reached in SCR 18, which was passed on the last day of the session, designating the western meadowlark as the state songbird and the osprey as the state raptor. UK Osprey Information Royal Society for the Protection of Birds Osprey species text in "The Atlas of Southern African Birds" Osprey – "Pandion haliaetus" – USGS Patuxent Bird Identification InfoCenter Osprey Info Animal Diversity Web USDA Forest Service osprey data Osprey Nest Monitoring Program at OspreyWatch "Ospreys Rebound, Rely On Help From Humans" Documentary produced by Oregon Field Guide Hellgate Ospreys Bird Cam Montana.


Question: What is the basionym of this plant?

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Peltandra virginica. a member of the arum family, Araceae, and is known by the names tuckahoe, green arrow arum, and peltandre.It was first identified as "tockowhough" by William Strachey, Secretary of the Colony of Virginia in 1611, in his book "The Historie of Travaile Into Virginia Britannia". He describes its starchy root as a primary food source of the Powhatan Indians which they gathered from the marshes of Virginia. It was originally described as "Arum virginicum" by Carl Linnaeus in 1753 and has also been placed in the genera "Alocasia", "Caladium", "Calla", "Lecontia", and "Rensselaeria". Other synonyms include "Peltandra luteospadix" and "P.


Question: What is the closest upper taxonomy of this insect?

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Echinargus isola. Echinargus isola, or Reakirt's blue, is a butterfly of the family Lycaenidae. It is the sole representative of the monotypic genus Echinargus.It is found in Central America and the extreme southern U.S. "Echinargus isola" migrates regularly throughout most of the U.S. almost to the Canada–United States border, and very rarely into the southern prairies.The wingspan is 16–23 mm. Adults are on wing from June to October in the north and year round in south. Its habitats include fields, gardens, open areas, and host plants.The larva feed on Fabaceae, particularly mesquites ("Prosopis" species). Adults feed on flower nectar from spearmint, white.

Echinargus isola. sweet clover, and a variety of other herbs."Echinargus isola isola""Echinargus isola alce" (Colorado).


Question: What is the conservation status of this animal? (The status is assigned by the international union for conservation of nature. Choose one among Endangered,Least Concern,Critically Endangered,extinct species,extinct in the wild,Vulnerable,Near Threatened,Data Deficient).

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Common box turtle. additional threat in the form of increased infrastructure, as common box turtles are frequently killed on roads and highways. Collection for the international pet trade may also impact populations in some areas. The life history characteristics of the common box turtle (long lifespan and slow reproductive rate) make it particularly vulnerable to such threats. The common box turtle is therefore classified as a vulnerable species on the IUCN Red List. The common box turtle is also listed on Appendix II of the Convention on International Trade in Endangered Species (CITES), meaning that international trade in this species should be carefully.