Question: Who is the manufacturer of this equipment?

Instruction: I want to find a paragraph from Wikipedia that answers my question about this image.

Cue stick. of the shaft. While there are many custom cuemakers, a very large number of quality pool cues are manufactured in bulk. In recent years, modern materials such as fiberglass, carbon fiber, aluminum, etc., have been used more and more for shafts and butts. A trend toward experimentation has also developed with rubber, memory foam and other soft .## Carom.Carom billiards cues tend to be shorter and lighter than pool cues, with a shorter ferrule, a thicker and joint, a wooden joint pin (ideally) and collarless wood-to-wood joint, a conical taper, and a smaller tip diameter. Typical dimensions are 54 -.

Cue stick. weight be 16 oz. or 22 oz., the weight change is mainly in the butt (usually in the core, under the wrap). Butts have varying constructions, from three-piece to one-piece, as well as other custom versions that people have developed. These translate into different "feels" because of the distribution of weight as well as the balance point of the cue. Traditionally, players want the balance point of a cue near the top end of the wrap or around 7 inches from where they grip the butt. Some brands and most custom cuemakers offer weights, usually metal discs of 1 to.


Question: What is the conservation status of this fish? (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).

Instruction: You have to find a Wikipedia segment that answers the question about the displayed image.

Blue shark. The blue shark (Prionace glauca), also known as the great blue shark, is a species of requiem shark, in the family Carcharhinidae, that inhabits deep waters in the world's temperate and tropical oceans. Averaging around 3.1 (m) and preferring cooler waters, the blue shark migrates long distances, such as from New England to South America. It is listed as Near Threatened by the IUCN.Although generally lethargic, they can move very quickly. Blue sharks are viviparous and are noted for large litters of 25 to over 100 pups. They feed primarily on small fish and squid, although they can take larger.

Blue shark. rockwork may be easier to avoid for blue sharks than smooth surfaces, as has been shown in captive [[tiger shark]]s.## Conservation status.In June 2018 the New Zealand [[Department of Conservation (New Zealand)|Department of Conservation]] classified the blue shark as "Not Threatened" with the qualifier "Secure Overseas" under the [[New Zealand Threat Classification System]]. The species is listed as [[Near-threatened species|Near Threatened]] by the [[International Union for Conservation of Nature|IUCN]]. [[Outline of sharks]] [[List of sharks]] [[List of prehistoric cartilaginous fish genera]] ARKive – Images and movies of the blue shark "(Prionace glauca)" Canadian Shark research laboratory BBCNews – 'Jaws' comes.


Question: How many days does the gestation of this animal take?

Instruction: I want to find a paragraph from Wikipedia that answers my question about this image.

Walrus. Norse word ('horse'). For example, the Old Norse word means 'horse-whale' and is thought to have been passed in an inverted form to both Dutch and the dialects of northern Germany as and . An alternative theory is that it comes from the Dutch words 'shore' and 'giant'.The species name "rosmarus" is Scandinavian. The Norwegian manuscript "Konungs skuggsjá", thought to date from around AD 1240, refers to the walrus as in Iceland and in Greenland (walruses were by now extinct in Iceland and Norway, while the word evolved in Greenland). Several place names in Iceland, Greenland and Norway may originate.

Walrus. Tusks and dentition.While this was not true of all extinct walruses, the most prominent feature of the living species is its long tusks. These are elongated canines, which are present in both male and female walruses and can reach a length of 1 m (3 ft 3 in) and weigh up to 5.4 kg (12 lb). Tusks are slightly longer and thicker among males, which use them for fighting, dominance and display; the strongest males with the largest tusks typically dominate social groups. Tusks are also used to form and maintain holes in the ice and aid the walrus in.

Walrus. Vibrissae (whiskers).Surrounding the tusks is a broad mat of stiff bristles ("mystacial vibrissae"), giving the walrus a characteristic whiskered appearance. There can be 400 to 700 vibrissae in 13 to 15 rows reaching 30 cm (12 in) in length, though in the wild they are often worn to much shorter lengths due to constant use in foraging. The vibrissae are attached to muscles and are supplied with blood and nerves, making them highly sensitive organs capable of differentiating shapes 3 (mm) thick and 2 (mm) wide.## Skin.Aside from the vibrissae, the walrus is sparsely covered with fur and appears bald.

Walrus. walrus numbers have again declined. Early aerial censuses of Pacific walrus conducted at five-year intervals between 1975 and 1985 estimated populations of above 220,000 in each of the three surveys.In 2006, the population of the Pacific walrus was estimated to be around 129,000 on the basis of an aerial census combined with satellite tracking. There were roughly 200,000 Pacific walruses in 1990.The much smaller population of Atlantic walruses ranges from the Canadian Arctic, across Greenland, Svalbard, and the western part of Arctic Russia. There are eight hypothetical subpopulations of Atlantic walruses, based largely on their geographical distribution and movements: five.

Walrus. A genetically distinct population existed in Iceland that was wiped out after Norse settlement around 1213–1330 AD.The isolated population of Laptev Sea walruses is confined year-round to the central and western regions of the Laptev Sea, the eastmost regions of the Kara Sea, and the westmost regions of the East Siberian Sea. The current population of these walruses has been estimated to be between 5,000 and 10,000.Even though walruses can dive to depths beyond 500 meters, they spend most of their time in shallow waters (and the nearby ice floes) hunting for food.In March 2021, a single walrus, nicknamed Wally.

Walrus. while giving birth and aggregating in the reproductive period. Thinner pack ice over the Bering Sea has reduced the amount of resting habitat near optimal feeding grounds. This more widely separates lactating females from their calves, increasing nutritional stress for the young and lower reproductive rates. Reduced coastal sea ice has also been implicated in the increase of stampeding deaths crowding the shorelines of the Chukchi Sea between eastern Russia and western Alaska. Analysis of trends in ice cover published in 2012 indicate that Pacific walrus populations are likely to continue to decline for the foreseeable future, and shift further.

Walrus. the Inuit goddess Sedna. Both in Chukotka and Alaska, the aurora borealis is believed to be a special world inhabited by those who died by violence, the changing rays representing deceased souls playing ball with a walrus head.Most of the distinctive 12th-century Lewis Chessmen from northern Europe are carved from walrus ivory, though a few have been found to be made of whales' teeth.## Literature.Because of its distinctive appearance, great bulk, and immediately recognizable whiskers and tusks, the walrus also appears in the popular cultures of peoples with little direct experience with the animal, particularly in English children's literature. Perhaps.


Question: What is the height of this island in metre?

Instruction: Determine the Wikipedia snippet that matches the question of this image.

Confederation Bridge. voted unanimously in favour of renaming the bridge to "Epekwitk Crossing", whereas Epekwitk ( ) is the traditional Mi'kmaq name for Prince Edward Island. The name change would need to be approved by the Canadian federal government in order to take effect.## Structure.The bridge is a two-lane toll bridge that carries the Trans-Canada Highway between Borden-Carleton, Prince Edward Island (at Route 1) and Cape Jourimain, New Brunswick (at Route 16).It is a multi-span balanced cantilever bridge with a post-tensioned concrete box girder structure. Most of the curved bridge is 40 (m) above water with a 60 (m) navigation span for.

Confederation Bridge. available. Before 2006, the shuttle was free and since January 1, 2022, the service has charged $4.75 per pedestrian or $9.50 per cyclist when leaving Prince Edward Island. Baggage is charged at a rate of $4.25 per bag after the first bag.The other major Northumberland Strait crossing, Wood Islands Ferry from Wood Islands, Prince Edward Island to Caribou, Nova Scotia, charges when leaving Prince Edward Island. Other ferry fares include $20.00 per adult pedestrian, $40.00 per motorcycle, and $20.00 per bicycle. Travellers, whether entering the island by bridge and leaving by ferry or "vice versa" pay for leaving the island.

Confederation Bridge. tourists visiting Prince Edward Island increased from 740,000 in 1996 (the year before the bridge opened) to 1,200,000 in 1997, but this dropped back to about 900,000 visitors annually.As a way of further promoting the island's new accessibility, the province issued vehicle licence plates from 1999 to 2006 that featured a likeness of the Confederation Bridge between the serial number. These plates, along with four other designs, started being replaced by a single design in 2013. List of bridges in Canada List of bridges by length Newfoundland–Labrador fixed link, a similar proposal to connect the island of Newfoundland to the.


Question: What is the basionym of this plant?

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Jujube. as (used for the fruit) and (the tree). A descendant of the Latin word into a Romance language, which may have been French or medieval Latin , in turn gave rise to the common English "jujube". This name is not related to jojoba, which is a loan from Spanish , itself borrowed from "hohohwi", the name of that plant in a Native American language.The binomial name has a curious nomenclatural history, due to a combination of botanical naming regulations, and variations in spelling. It was first named in the binomial system by Carl Linnaeus as "Rhamnus zizyphus", in "Species Plantarum.


Question: What is the spore print color of this plant?

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Clitocybe nuda. Cooke called it the amethyst lepista, John Sibthorp called it the blue-gilled agaric in his 1794 work "Flora Oxoniensis".## Description.This mushroom can range from lilac to purple-pink. Some North American specimens are duller and tend toward tan, but usually have purplish tones on the stem and gills. Younger specimens are lighter with more convex caps, while mature specimens have a darker color and flatter cap, ranging from in diameter. The gills are attached to the short, stout stem, which is about long and 1–2.5 cm wide, sometimes larger at the base. Wood blewits have a very distinctive odor, which has.

Clitocybe nuda. been likened by one author to that of frozen orange juice.Wood blewits can be easily distinguished by their odor, as well as by their spore print, which is white to pale pink.## Similar species.Wood blewits can be confused with certain blue or purple species of the genus "Cortinarius", including the uncommon "C. camphoratus", many of which may be poisonous. "Cortinarius" mushrooms often have the remains of a veil under their caps and a ring-like impression on their stem. "Cortinarius" species produce a rusty brown spore print after several hours on white paper. Their brown spores often dust their stems and.


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

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Roseate spoonbill. The roseate spoonbill (Platalea ajaja) is a gregarious wading bird of the ibis and spoonbill family, Threskiornithidae. It is a resident breeder in both South and North America. ## Taxonomy.The roseate spoonbill is sometimes placed in its own genus - "Ajaia". A 2010 study of mitochondrial DNA of the spoonbills by Chesser and colleagues found that the roseate and yellow-billed spoonbills were each other's closest relatives, and the two were descended from an early offshoot from the ancestors of the other four spoonbill species. They felt the genetic evidence meant it was equally valid to consider all six to be.

Roseate spoonbill. classified within the genus "Platalea" or alternatively the two placed in the monotypic genera "Platibis" and "Ajaia", respectively. However, as the six species were so similar morphologically, keeping them within the one genus made more sense.## Description.The roseate spoonbill is 71 - 86 (cm) long, with a 120 – 133 (cm) wingspan and a body mass of 1.2 - 1.8 (kg). The tarsus measures 9.7 - 12.4 (cm), the culmen measures 14.5 - 18 (cm) and the wing measures 32.3 - 37.5 (cm) and thus the legs, bill, neck and spatulate bill all appear elongated. Adults have a bare greenish.


Question: What historical region did this village belong to?

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Nelahozeves. Nelahozeves is a municipality and village in Mělník District in the Central Bohemian Region of the Czech Republic. It has about 2,200 inhabitants.## Administrative parts.Villages of Hleďsebe 1.díl, Hleďsebe 2.díl, Lešany and Podhořany are administrative parts of Nelahozeves.## Geography.Nelahozeves lies on the left bank of the Vltava River, about 19 (km) north of Prague.## History.The first written mention of Nelahozeves is from 1352, when the Church of Saint Andrew already existed.## Sights.The village has a three-winged Renaissance chateau in the Italianate Northern Mannerist style, featuring elaborate sgraffito designs that depict scenes from Greek mythology and the Old Testament. The castle.

Nelahozeves. as the Lobkowicz family's primary residence. In the late 19th and early 20th centuries, it was home to the Order of the Sisters of God's Love, a religious institution for widowed or unmarried noblewomen founded by Princess Wilhelmina Lobkowicz (1863–1945). Nelahozeves Castle was confiscated by the Communist government in 1948, and housed an exhibition of modern socialist art run by the Czech Regional Gallery in the 1970s and 80s. It was returned to the Lobkowicz family in 1993, and now features an exhibition of historical period rooms, demonstrating the lifestyle of a Bohemian noble family in the mid-19th century. The.


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

Instruction: I want to find a paragraph from Wikipedia that answers my question about this image.

Jigsaw puzzle. A jigsaw puzzle is a tiling puzzle that requires the assembly of often irregularly shaped interlocking and mosaiced pieces, each of which typically has a portion of a picture. When assembled, the puzzle pieces produce a complete picture.In the 18th century, jigsaw puzzles were created by painting a picture on a flat, rectangular piece of wood, then cutting it into small pieces. Despite the name, a jigsaw was never used. John Spilsbury, a London cartographer and engraver, is credited with commercialising jigsaw puzzles around 1760. They have since come to be made primarily of cardboard.Typical images on jigsaw puzzles include.

Jigsaw puzzle. be attached to a backing with adhesive and displayed as art.## History.John Spilsbury is believed to have produced the first jigsaw puzzle around 1760, using a marquetry saw.Early puzzles, known as dissections, were produced by mounting maps on sheets of hardwood and cutting along national boundaries, creating a puzzle useful for teaching geography. Royal governess Lady Charlotte Finch used such "dissected maps" to teach the children of King George III and Queen Charlotte Cardboard jigsaw puzzles appeared in the late 1800s, but were slow to replace wooden ones because manufacturers felt that cardboard puzzles would be perceived as low-quality, and.


Question: What is the hymenium type of this plant?

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Morchella esculenta. are ellipsoidal, smooth, thin-walled, translucent (hyaline), and measure 17.5–21.9 by 8.8–11.0 µm. The asci are eight-spored, 223–300 by 19–20 µm, cylindrical, and hyaline. The paraphyses are filamentous, cylindrical, 5.8–8.8 µm wide, and hyaline.The hyphae of the stem are interwoven, hyaline, and measure 5.8–9.4 µm wide. The surface hyphae are inflated, spherical to pear-shaped, 22–44 µm wide, covered by a network of interwoven hyphae 11–16.8 µm wide with recurved cylindrical hyphal ends.## Development.Fruit bodies have successfully been grown in the laboratory. R. Ower was the first to describe the developmental stages of ascomata grown in a controlled chamber. This was followed.


Question: What is this place named after?

Instruction: Determine the Wikipedia snippet that matches the question of this image.

Arch of Hadrian (Jerash). The Arch of Hadrian is an ancient Roman structure in Jerash, Jordan. It is an 11-metre high triple-arched gateway erected to honor the visit of Roman Emperor Hadrian to the city (then called Gerasa) in the winter of 129–130. The arch originally stood to almost 22 m and probably had wooden doors. It features some unconventional, possibly Nabataean, architectural features, such as acanthus bases. The columns are decorated with capitals at the bottom rather than the top. The monument served both as a commemorative arch and as an approach to Gerasa. The Arch's relative remoteness from the city walls points.

Arch of Hadrian (Jerash). to a plan for southward expansion of Gerasa during its heyday. The expansion, however, has not been implemented.## Description.In 2005, the arch was under restoration. Reconstruction was completed in 2007 and the arch is now roughly 21 meters high (about 36 feet), 37.45 meters long, and 9.25 meters wide. Each face of the arch has four engaged columns standing on pedestals and bases. Each pedestal is 2.20 meters high, 2.25 meters wide and 1.20 meters deep. The base of each column is topped by a row of acanthus leaves.There are three vaulted passageways on the lower level and each of.

Arch of Hadrian (Jerash). these is flanked by two columns with Corinthian capitals. The two flanked archways are topped with niches. Each niche is on top of a small entablature, which stands on two pilasters crowned with capitals.The arch was crowned with an attic, which might have held a dedicatory inscription. The lower part of the attic was decorated with a frieze of acanthus leaves and the central part was crowned with a triangular cornice.## Inscription.There was a marble "tabula ansata" panel that was 1.03 meters in height and 7.14 meters in width, with letters 12–13 cm tall.List of Roman triumphal archesArch of Hadrian.


Question: What is the source that produces this material?

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Tortoiseshell. Tortoiseshell or tortoise shell is a material produced from the shells of the larger species of tortoise and turtle, mainly the hawksbill sea turtle, which is a critically endangered species according to the IUCN Red List largely because of its exploitation for this trade. The large size, fine color, and unusual form of the hawksbill's scutes make it especially suitable. The distinctive patterning is referred to in names such as the tortoiseshell cat, several breeds of guinea pig, and the common names of several species of the butterfly genera "Nymphalis" and "Aglais", and some other uses.## Uses.Tortoiseshell was widely used.


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

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Pectoral sandpiper. The pectoral sandpiper (Calidris melanotos) is a small, migratory wader that breeds in North America and Asia, wintering in South America and Oceania. It eats small invertebrates. Its nest, a hole scraped in the ground and with a thick lining, is deep enough to protect its four eggs from the cool breezes of its breeding grounds. The pectoral sandpiper is 21 (cm) long, with a wingspan of 46 (cm).## Taxonomy.The pectoral sandpiper is sometimes separated with the "stint" sandpipers in "Erolia". This may or may not represent a good monophyletic group, depending on the placement of the phylogenetically enigmatic curlew.

Pectoral sandpiper. sandpiper (""C." ferruginea"), the type species of "Erolia". In any case, the genus name "Ereunetes"—formerly used for the western sandpiper (""C." mauri") and semipalmated sandpiper (""C." pusilla"), which are also members of the stint clade—was established before "Erolia"."Cox's sandpiper" ("Calidris" × "paramelanotos") is a stereotyped hybrid between this species and the curlew sandpiper. This does not prove a particularly close relationship between these two species, as far more distantly related waders have successfully hybridized. In any case, among the stint clade the red-necked stint (""C." ruficollis") and the long-toed stint (""C." subminuta") are particularly close relatives of the pectoral sandpiper.The.


Question: What is the facet of this object?

Instruction: I want to find a paragraph from Wikipedia that answers my question about this image.

Octagon. In geometry, an octagon (from the Greek ὀκτάγωνον "oktágōnon", "eight angles") is an eight-sided polygon or 8-gon.A "regular octagon" has Schläfli symbol {8} and can also be constructed as a quasiregular truncated square, t{4}, which alternates two types of edges. A truncated octagon, t{8} is a hexadecagon, {16}. A 3D analog of the octagon can be the rhombicuboctahedron with the triangular faces on it like the replaced edges, if one considers the octagon to be a truncated square.## Properties of the general octagon.The sum of all the internal angles of any octagon is 1080°. As with all polygons, the external.

Octagon. angles total 360°.If squares are constructed all internally or all externally on the sides of an octagon, then the midpoints of the segments connecting the centers of opposite squares form a quadrilateral that is both equidiagonal and orthodiagonal (that is, whose diagonals are equal in length and at right angles to each other).The midpoint octagon of a reference octagon has its eight vertices at the midpoints of the sides of the reference octagon. If squares are constructed all internally or all externally on the sides of the midpoint octagon, then the midpoints of the segments connecting the centers of opposite.

Octagon. squares themselves form the vertices of a square.## Regular octagon.A regular octagon is a closed figure with sides of the same length and internal angles of the same size. It has eight lines of reflective symmetry and rotational symmetry of order 8. A regular octagon is represented by the Schläfli symbol {8}.The internal angle at each vertex of a regular octagon is 135° (formula_1 radians). The central angle is 45° (formula_2 radians).## Area.The area of a regular octagon of side length "a" is given byformula_3In terms of the circumradius "R", the area isformula_4In terms of the apothem "r" (see also.

Octagon. inscribed figure), the area isformula_5These last two coefficients bracket the value of pi, the area of the unit circle.The area can also be expressed asformula_6where "S" is the span of the octagon, or the second-shortest diagonal; and "a" is the length of one of the sides, or bases. This is easily proven if one takes an octagon, draws a square around the outside (making sure that four of the eight sides overlap with the four sides of the square) and then takes the corner triangles (these are 45–45–90 triangles) and places them with right angles pointed inward, forming a square.

Octagon. The edges of this square are each the length of the base.Given the length of a side "a", the span "S" isformula_7The span, then, is equal to the "silver ratio" times the side, a.The area is then as above:formula_8Expressed in terms of the span, the area isformula_9Another simple formula for the area is formula_10More often the span "S" is known, and the length of the sides, "a", is to be determined, as when cutting a square piece of material into a regular octagon. From the above,formula_11The two end lengths "e" on each side (the leg lengths of the triangles (green.

Octagon. in the image) truncated from the square), as well as being formula_12 may be calculated asformula_13## Circumradius and inradius.The circumradius of the regular octagon in terms of the side length "a" isformula_14and the inradius isformula_15## Diagonals.The regular octagon, in terms of the side length "a", has three different types of diagonals:Short diagonal;Medium diagonal (also called span or height), which is twice the length of the inradius;Long diagonal, which is twice the length of the circumradius.The formula for each of them follows from the basic principles of geometry. Here are the formulas for their length:Short diagonal: formula_16 ;Medium diagonal: formula_17 ;.

Octagon. ("silver ratio" times a) Long diagonal: formula_18 .## Construction and elementary properties.A regular octagon at a given circumcircle may be constructed as follows:Draw a circle and a diameter AOE, where O is the center and A, E are points on the circumcircle.Draw another diameter GOC, perpendicular to AOE.(Note in passing that A,C,E,G are vertices of a square).Draw the bisectors of the right angles GOA and EOG, making two more diameters HOD and FOB.A,B,C,D,E,F,G,H are the vertices of the octagon.A regular octagon can be constructed using a straightedge and a compass, as 8 = 23, a power of two:The regular octagon.

Octagon. can be constructed with meccano bars. Twelve bars of size 4, three bars of size 5 and two bars of size 6 are required.Each side of a regular octagon subtends half a right angle at the centre of the circle which connects its vertices. Its area can thus be computed as the sum of 8 isosceles triangles, leading to the result:formula_19for an octagon of side "a".## Standard coordinates.The coordinates for the vertices of a regular octagon centered at the origin and with side length 2 are:(±1, ±(1+)) (±(1+), ±1).## Dissection.Coxeter states that every zonogon (a 2"m"-gon whose opposite sides are.

Octagon. parallel and of equal length) can be dissected into "m"("m"-1)/2 parallelograms.In particular this is true for regular polygons with evenly many sides, in which case the parallelograms are all rhombi. For the "regular octagon", "m"=4, and it can be divided into 6 rhombs, with one example shown below. This decomposition can be seen as 6 of 24 faces in a Petrie polygon projection plane of the tesseract. The list defines the number of solutions as 8, by the 8 orientations of this one dissection. These squares and rhombs are used in the Ammann–Beenker tilings.## Skew octagon.A skew octagon is a.

Octagon. skew polygon with 8 vertices and edges but not existing on the same plane. The interior of such an octagon is not generally defined. A "skew zig-zag octagon" has vertices alternating between two parallel planes.A regular skew octagon is vertex-transitive with equal edge lengths. In 3-dimensions it will be a zig-zag skew octagon and can be seen in the vertices and side edges of a square antiprism with the same D4d, [2+,8] symmetry, order 16.## Petrie polygons.The regular skew octagon is the Petrie polygon for these higher-dimensional regular and uniform polytopes, shown in these skew orthogonal projections of in A7,.

Octagon. B4, and D5 Coxeter planes.## Symmetry of octagon.The "regular octagon" has Dih8 symmetry, order 16. There are 3 dihedral subgroups: Dih4, Dih2, and Dih1, and 4 cyclic subgroups: Z8, Z4, Z2, and Z1, the last implying no symmetry.On the regular octagon, there are 11 distinct symmetries. John Conway labels full symmetry as r16. The dihedral symmetries are divided depending on whether they pass through vertices (d for diagonal) or edges (p for perpendiculars) Cyclic symmetries in the middle column are labeled as g for their central gyration orders. Full symmetry of the regular form is r16 and no symmetry is.

Octagon. labeled a1.The most common high symmetry octagons are p8, an isogonal octagon constructed by four mirrors can alternate long and short edges, and d8, an isotoxal octagon constructed with equal edge lengths, but vertices alternating two different internal angles. These two forms are duals of each other and have half the symmetry order of the regular octagon.Each subgroup symmetry allows one or more degrees of freedom for irregular forms. Only the g8 subgroup has no degrees of freedom but can seen as directed edges.## Uses of octagons.The octagonal shape is used as a design element in architecture. The Dome of.


Question: What is the immediately prior item that this building follows in a series?

Instruction: I want to find a paragraph from Wikipedia that answers my question about this image.

Palais de Chaillot. The Palais de Chaillot () is a building at the top of the in the Trocadéro area in the 16th "arrondissement" of Paris, France.For the Exposition Internationale of 1937, the old 1878 Palais du Trocadéro was partly demolished and partly rebuilt to create the Palais de Chaillot. It was designed in classicising "moderne" style by architects Louis-Hippolyte Boileau, Jacques Carlu and Léon Azéma. The Palais consists of two separate wings shaped to form a wide arc, which are those of the former building with new taller portions built in front. The pair of larger central pavilions are also those of.


Question: Which company manufactures this vehicle?

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Nissan Juke. The is a subcompact crossover SUV (B-segment) produced by the Japanese car manufacturer Nissan since 2010. Debuted as a production vehicle at the 2010 Geneva Motor Show in March and positioned below the C-segment Qashqai, it was introduced to North America at the 2010 New York International Auto Show to be sold for the 2011 model year.The second-generation model was revealed for the European market in September 2019, offering larger dimensions by utilising the newer Renault–Nissan CMF-B platform. The second generation marks the withdrawal of the model from most markets outside Europe and Australasia to make way for the Nissan.

Nissan Juke. Kicks.The name "juke" means to "dance or change directions demonstrating agility", and is also derived from the word "jukebox".## First generation (F15; 2010).On 11 February 2009, Nissan announced that the model would go into production at the Nissan Motor Manufacturing UK (NMUK) plant in Sunderland, United Kingdom, during 2010 following its appearance as the Nissan Qazana concept car at the 2009 Geneva Motor Show.The Juke was designed at Nissan Design Europe in London and refined at Nissan's Design Centre in Japan. It is based on the Nissan B platform. The Sunderland plant (NMUK) manufactures for the European market, Australia and.

Nissan Juke. New Zealand, while Nissan's facility in Oppama, Japan, produces the vehicle for all other countries. Both Sunderland and Oppama are suppliers of the all-wheel drive variant. The Purwakarta plant (NMI) in Indonesia assembled the Juke for the domestic market and Thailand with a local content of 40 percent, front-wheel-drive only.A rebadged version of the first-generation Juke was sold in China as the Infiniti ESQ.## Design.The car's profile is dominated by the prominent wheel arches and the body's high waistline which contrast with the slim side windows, which is a modern interpretation of "coke bottle styling" popular during the 1960s and.

Nissan Juke. 1970s. Echoing a style first seen Nissan's high performance electric coupé concept shown at the 2007 Frankfurt Motor Show, the glasshouse resembles a racing helmet visor. A coupé-like appearance is achieved by the rear door handles being located near the C-pillars, within the window frame. Locating the rear door handles within the window frame is a Nissan styling tradition, begun with the 1985 Nissan Pathfinder. The sport motif continues inside with the red or grey-painted centre console bearing similarity to a motorcycle fuel tank.The front end features a stacked array of lights. Running lamps and indicators are mounted atop the.

Nissan Juke. front wings, their lenses visible from inside the cabin as an aid to maneuvering. Below them, under the lower edges of an expansive, curved grille, the main headlamps are intended to be reminiscent of those fitted to rally cars during the 1960s and 1970s. Where fitted, fog lamps are situated on a third level within the sump guard at the bottom.## Cabin.The Juke features seating for five (two in front, three in back). The rear seats have a 60/40 split and can be folded down independently in order to carry larger objects. The rear cargo area is small but features.

Nissan Juke. additional storage beneath the floor (front wheel drive models only).The steering column instrumentation cluster features a tachometer, speedometer, and a small display between them that displays real-time fuel efficiency, odometer and trip odometer.The center portion of the dash contains the radio and the I-CON control (if equipped). Depending on market and trim level the Juke may be equipped with iPod or USB connectivity, NissanConnect GPS navigation, rear-view camera and Bluetooth audio. A relatively deep glovebox on the passenger side houses an iPod connector (if equipped).All but base models are equipped with Nissan's Integrated Control System, dubbed I-CON: a command module.

Nissan Juke. that sits in the lower dashboard, which manages both the climate control and the vehicle's drive mode (Normal, Sport or Eco). Its display and nomenclature change according to the function selected. Among the available display data are fuel efficiency stats, real-time G-force measurements and turbo boost pressure.## Markets.## Japan.In Japan, where the car was launched on 9 June 2010, orders totalled 10,943 units in its first month, surpassing Nissan's monthly target of 1,300. By 5 October 2010, Japanese sales had increased to 20,000 while European and US figures also exceeded expectations with orders for 30,000 and 17,500 cars taken for.

Nissan Juke. the respective markets. Four levels are specified. The RX and RS models are equipped with the "HR15DE" I4 engine, while the "MR16DDT" was supplied for the 16GT and 16GT FOUR.## United States.Three trim levels were initially available with the 1.6-litre turbocharged "MR16DDT" petrol engine: S, SV and SL. The base engine is rated at 188 hp (140 kW) at 5,600 rpm and 177 lb⋅ft (240 N⋅m) of torque at 2,000 rpm. The base S model was available only with a CVT and lacks the I-CON display. The SV model adds I-CON, optional 6-speed manual transmission and moonroof. The SL model.

Nissan Juke. adds leather seats, USB connectivity and a rear-view camera. All-wheel drive with torque vectoring was optional on all trims but cannot be paired with a manual transmission.After the 2017 model year, the Juke was discontinued in the United States.## Canada.The S trim was available with either manual transmission or CVT. In the SV trim the I-CON system was not standard and was available as an option. In the SL trim the I-CON system was standard and a navigation system was available. The Juke was discontinued in Canada after the 2017 model year.## Europe.Five trim levels are indicated for the 1.6-litre.

Nissan Juke. "HR16DE" petrol, 1.5-litre "K9K" diesel and 1.6-litre "MR16DDT" petrol engines: Visia, Acenta (also available with Sport and Premium packs), Tekna, Nismo and Nismo RS. In 2012, Nissan replaced the limited edition Juke Kuru with the Juke Shiro model. The Shiro was a limited edition Juke with white accents throughout the interior including white stitching on the leather seats, gear shifter and steering wheel as well as several other aesthetic options.The car was launched in the UK on 24 September 2010.## New Zealand.Two trim levels: ST and Ti, are available. Both are front-wheel drive and are powered by the HR16DE engine.

Nissan Juke. only available with a CVT. Some features on the higher-spec Ti include 17-inch alloy wheels, Dynamic Control System (DCS) drive modes, intelligent key with push start button and dual front, side and curtain airbags.## Indonesia.Locally assembled by Nissan Motor Indonesia (NMI), the Juke for the Indonesian market comes with two trim levels: RX and Red, with one engine option, the 1.5-litre "HR15DE" I4. Both trims are only available with a CVT. The Red model, only available in Indonesia, adds roof spoiler, different grille colour and bigger audio display screen. On 12 February 2015, Nissan Motor Indonesia added "Revolt" trim to.

Nissan Juke. the lineup, while introducing facelift for Indonesian Juke. Between 2014 and 2017, the locally assembled Juke was exported to Thailand. Production ceased in September 2018.## Chile.Sales began in 2012 for the Juke identical to the UK model sold in Chile. Three trim levels are offered: Sense, Advance and Exclusive, with two engines, 1.6 and 1.6 Turbo, with the turbo engine only available in the Exclusive trim level. All of them come with a CVT except the Exclusive Turbo, with the AWD option was only offered in the Exclusive.## Facelift.At the 2014 Geneva Motor Show, Nissan unveiled the revised Nissan Juke.

Nissan Juke. for 2015 model year, which went on sale in the summer of 2014. On the exterior, the revision has new L-Shaped LED Daytime Running and Indicator clusters, new front and rear bumper styling and new colour options. New standard equipment includes a rear-view camera, keyless entry and Bluetooth hands-free phone system.## Juke Nismo.New for 2013, the NISMO version differs from the base Juke in styling changes to the bumpers and side skirts, interior styling, modified suspension and steering, 18 (in) wheels, an unspecified "torque vectoring" option, and engine tuning. The engine is rated at 197 (hp) at 6,000 rpm and.

Nissan Juke. 184 (lbft) of torque at 2,000 rpm. There was also a higher-end Nismo RS variant available, with upgraded standard equipment (Recaro front seats, carbon fiber). The engine is upgraded to 215 (hp) at 6,300 rpm and 210 (lbft) at 3,600 rpm.The New York Times review was generally positive, but: "About that styling: I love it, but you might hate it. The face is dominated by bug-eye headlamps, and the running lights bulge up above the hood such that they’re in the driver’s line of sight. At night, the effect is of large bio-luminescent slugs lounging atop the front fenders. Admittedly,.

Nissan Juke. it’s more appealing than I’m making it sound."## Juke-R.The Juke-R is a limited production run Juke with the drivetrain, chassis, and the 3.8-litre VR engine from the Nissan GT-R that produces 545 (hp). Although Nissan planned to produce 17 or 23 units, only a total of five Juke-Rs were produced.## Infiniti ESQ.Beginning in 2014, the Juke has been sold in China as the Infiniti ESQ. Debuted at 2014 Chengdu Auto Show, it is based on the pre-facelift Juke Nismo with its upgraded suspension, aero enhancements and 18-inch wheels. It uses the turbocharged 1.6-liter four-cylinder engine with 147 (kW).As of 2016,.

Nissan Juke. the ESQ is the only Infiniti model not to have a name beginning with the letter Q.## Marketing.In August 2013, Nissan launched a commercial for the Juke, featuring Stormtroopers from the "Star Wars" series.## Second generation (F16; 2019).The second-generation Juke was unveiled on 3 September 2019 in London, Paris, Milan, Barcelona and Cologne. The second-generation Juke went in production in October 2019. Nissan continued to build the Juke at its plant in Sunderland, UK. Customer deliveries begun in late November in European markets.The vehicle is larger and based on an all-new CMF-B platform shared with the second-generation Renault Captur and.

Nissan Juke. the fifth-generation Renault Clio. The new platform makes extensive use of high-strength steel which is claimed to offer better stability, performance, and cornering capabilities. Despite that, the second-generation Juke is lighter by around 23 (kg) compared to the previous-generation model.Nissan claims rear-seat knee room is increased by 58 (mm), rear head room by 11 (mm), and the boot capacity is now 20 percent bigger at 422 (L) because of its larger size. The new Juke adopts an all-new dashboard layout with a 'floating' central display, a new multifunction steering wheel, and a reduced number of buttons on the center console.Initial.

Nissan Juke. engine option is the 1.0-litre three-cylinder "DIG-T" turbocharged petrol engine which produces 117 (PS) and 180 (Nm). In March 2022, a 1.6-litre petrol hybrid engine option from the Renault Captur was introduced alongside the 2022 improved model.For most markets outside Europe and Australasia, the second-generation Juke was never introduced as it was replaced by the V platform-based Kicks. The Kicks was revealed in North America in 2017 for 2018 model year, directly replacing the Juke. The Juke was also phased out in Japan and several Southeast Asian markets in favour of the Kicks e-Power.It was released in Australia in May.

Nissan Juke. 2020, with four trim levels available. It was also launched in Taiwan in November 2020, and sold alongside the locally assembled Kicks.## Safety.The second-generation Juke was awarded a full five-star rating by Euro NCAP.## Reception.It was reported that customers of the Juke mainly consisted of young buyers and the elderly, resulting in an average age in the late 40s.In Europe, it is Nissan's second best-selling car behind the Qashqai. U.S. sales of the Juke slowed in 2015, but the crossover sold 38,000 units in 2013 and 2014, and about 36,000 in 2011 and 2012.The Nissan Juke received Insurance Institute for.

Nissan Juke. Highway Safety (IIHS) Top Safety Pick in 2011.A Nissan Juke driven by stunt-driver Terry Grant claimed a Guinness World Record when it was driven around the Goodwood Hill Course on two wheels for 2 minutes and 55 seconds. The Nissan Juke received "The Grand Tour"s 2017 "Nissan Juke Award" for the worst car of the year.


Question: What historical region did this village belong to?

Instruction: I want to find a paragraph from Wikipedia that answers my question about this image.

Nelahozeves. Nelahozeves is a municipality and village in Mělník District in the Central Bohemian Region of the Czech Republic. It has about 2,200 inhabitants.## Administrative parts.Villages of Hleďsebe 1.díl, Hleďsebe 2.díl, Lešany and Podhořany are administrative parts of Nelahozeves.## Geography.Nelahozeves lies on the left bank of the Vltava River, about 19 (km) north of Prague.## History.The first written mention of Nelahozeves is from 1352, when the Church of Saint Andrew already existed.## Sights.The village has a three-winged Renaissance chateau in the Italianate Northern Mannerist style, featuring elaborate sgraffito designs that depict scenes from Greek mythology and the Old Testament. The castle.

Nelahozeves. as the Lobkowicz family's primary residence. In the late 19th and early 20th centuries, it was home to the Order of the Sisters of God's Love, a religious institution for widowed or unmarried noblewomen founded by Princess Wilhelmina Lobkowicz (1863–1945). Nelahozeves Castle was confiscated by the Communist government in 1948, and housed an exhibition of modern socialist art run by the Czech Regional Gallery in the 1970s and 80s. It was returned to the Lobkowicz family in 1993, and now features an exhibition of historical period rooms, demonstrating the lifestyle of a Bohemian noble family in the mid-19th century. The.


Question: Where is this bird originally discovered?

Instruction: Determine the Wikipedia snippet that matches the question of this image.

Canada jay. widespread "boreal" or "taiga" clade ranging from Alaska to Newfoundland and ranging south to the Black Hills of South Dakota, Wyoming and Utah in the west and New England in the east, a "transcascade" clade in eastern Washington and Oregon and ranging into Alberta and Montana, a "Rocky Mountains (Colorado)" clade from the southern Rocky Mountains, and a "Pacific" clade from coastal British Columbia, Washington, and southwestern Oregon. There was also a population of the boreal clade in the central Rocky Mountains between the Colorado and transcascade clades. Genetic dating suggests the Pacific clade diverged from the common ancestor of.

Canada jay. the Alberta jay, was described by American ornithologist James L. Peters in 1920. It ranges from northeastern British Columbia and northwestern Alberta southeastward, east of the Rocky Mountains to the Black Hills of South Dakota. It is an occasional visitor to northwestern Nebraska. "P. c. bicolor", described by American zoologist Alden H. Miller in 1933, is found in southeastern British Columbia, southwestern Alberta, eastern Washington, northeastern Oregon, northern and central Idaho, and western Montana. Miller noted that the subspecies appeared to be a stable intermediate form between "canadensis" and "capitalis". It was a similar size to subspecies "canadensis", and had.

Canada jay. (Philadelphia)."P. c. capitalis" is found in the southern Rocky Mountains from eastern Idaho, south-central Montana, and western and southern Wyoming south through eastern Utah, and western and central Colorado, to east-central Arizona and north-central New Mexico. American naturalist Spencer Fullerton Baird described this subspecies in 1873. It has a wholly whitish head with a pale band on the back of the neck, and overall more ashy grey plumage. It is also generally larger than the nominate subspecies "canadensis"."P. c. griseus" occurs from southwestern British Columbia and Vancouver Island south through central Washington and central Oregon to the mountains of north-central.

Canada jay. and northeastern California. It was described by Robert Ridgway in 1899."P. c. nigricapillus", also known as the Labrador jay, is found in northern Quebec (Kuujjuaq, Whale River, and George River), throughout Labrador and Nova Scotia, and in southeastern Quebec (Mingan and Blanc-Sablon). It was described by Ridgway in 1882."P. c. obscurus", described by Ridgway in 1874, is native to the coastal strip from Washington (Crescent Lake, Seattle, and Columbia River) through western Oregon to northwestern California (Humboldt County). Also known as the Oregon jay, this subspecies has more dark brown than grey upperparts. "P. c. pacificus" ranges from central Alaska.

Canada jay. a magnolia warbler ("Dendroica magnolia") in flight. They have been reported to opportunistically hunt young amphibians such as the western chorus frog ("Pseudacris triseriata") in Chambers Lake, Colorado, and the long-toed salamander ("Ambystoma macrodactylum") in Whitehorse Bluff in Crater Lake National Park, Oregon. Canada jays have been seen landing on moose ("Alces alces") to remove and eat engorged winter ticks ("Dermacentor albipictus") during April and May in Algonquin Provincial Park. Researchers also found a Canada jay nest containing a brooding female, three hatchlings, and three warm, engorged winter deer ticks. Because the ticks were too large for the hatchlings to.


Question: What is the conservation status of this fish? (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).

Instruction: Retrieve a Wikipedia paragraph that provides an answer to the given query about the image.

Blue shark. The blue shark (Prionace glauca), also known as the great blue shark, is a species of requiem shark, in the family Carcharhinidae, that inhabits deep waters in the world's temperate and tropical oceans. Averaging around 3.1 (m) and preferring cooler waters, the blue shark migrates long distances, such as from New England to South America. It is listed as Near Threatened by the IUCN.Although generally lethargic, they can move very quickly. Blue sharks are viviparous and are noted for large litters of 25 to over 100 pups. They feed primarily on small fish and squid, although they can take larger.

Blue shark. rockwork may be easier to avoid for blue sharks than smooth surfaces, as has been shown in captive [[tiger shark]]s.## Conservation status.In June 2018 the New Zealand [[Department of Conservation (New Zealand)|Department of Conservation]] classified the blue shark as "Not Threatened" with the qualifier "Secure Overseas" under the [[New Zealand Threat Classification System]]. The species is listed as [[Near-threatened species|Near Threatened]] by the [[International Union for Conservation of Nature|IUCN]]. [[Outline of sharks]] [[List of sharks]] [[List of prehistoric cartilaginous fish genera]] ARKive – Images and movies of the blue shark "(Prionace glauca)" Canadian Shark research laboratory BBCNews – 'Jaws' comes.


Question: What equipment or engine is used by this item to provide power?

Instruction: Determine the Wikipedia snippet that matches the question of this image.

Electric motor. An electric motor is an electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor's shaft. An electric generator is mechanically identical to an electric motor, but operates with a reversed flow of power, converting mechanical energy into electrical energy.Electric motors can be powered by direct current (DC) sources, such as from batteries, or rectifiers, or by alternating current (AC) sources, such as a power grid, inverters or electrical generators.Electric.

Electric motor. braking with traction motors, electric motors can be used in reverse as generators to recover energy that might otherwise be lost as heat and friction.Electric motors produce linear or rotary force (torque) intended to propel some external mechanism, such as a fan or an elevator. An electric motor is generally designed for continuous rotation, or for linear movement over a significant distance compared to its size. Magnetic solenoids are also transducers that convert electrical power to mechanical motion, but can produce motion over only a limited distance.## History.## Early motors.Before modern electromagnetic motors, experimental motors that worked by electrostatic force.

Electric motor. persistent electric currents. Hans Christian Ørsted discovered in 1820 that an electric current creates a magnetic field, which can exert a force on a magnet. It only took a few weeks for André-Marie Ampère to develop the first formulation of the electromagnetic interaction and present the Ampère's force law, that described the production of mechanical force by the interaction of an electric current and a magnetic field. The first demonstration of the effect with a rotary motion was given by Michael Faraday on 3 September 1821 in the basement of the Royal Institution. A free-hanging wire was dipped into a.

Electric motor. pool of mercury, on which a permanent magnet (PM) was placed. When a current was passed through the wire, the wire rotated around the magnet, showing that the current gave rise to a close circular magnetic field around the wire. Faraday published the results of his discovery in the "Quarterly Journal of Science", and sent copies of his paper along with pocket-sized models of his device to colleagues around the world so they could also witness the phenomenon of electromagnetic rotations. This motor is often demonstrated in physics experiments, substituting brine for (toxic) mercury. Barlow's wheel was an early refinement.

Electric motor. to this Faraday demonstration, although these and similar homopolar motors remained unsuited to practical application until late in the century.In 1827, Hungarian physicist Ányos Jedlik started experimenting with electromagnetic coils. After Jedlik solved the technical problems of continuous rotation with the invention of the commutator, he called his early devices "electromagnetic self-rotors". Although they were used only for teaching, in 1828 Jedlik demonstrated the first device to contain the three main components of practical DC motors: the stator, rotor and commutator. The device employed no permanent magnets, as the magnetic fields of both the stationary and revolving components were produced.

Electric motor. then higher performance.In 1855, Jedlik built a device using similar principles to those used in his electromagnetic self-rotors that was capable of useful work. He built a model electric vehicle that same year.A major turning point came in 1864, when Antonio Pacinotti first described the ring armature (although initially conceived in a DC generator, i.e. a dynamo). This featured symmetrically-grouped coils closed upon themselves and connected to the bars of a commutator, the brushes of which delivered practically non-fluctuating current. The first commercially successful DC motors followed the developments by Zénobe Gramme who, in 1871, reinvented Pacinotti's design and adopted.

Electric motor. from such tasks as handling grain or pumping water. Household uses (like in washing machines, dishwashers, fans, air conditioners and refrigerators (replacing ice boxes)) of electric motors reduced heavy labor in the home and made higher standards of convenience, comfort and safety possible. Today, electric motors consume more than half of the electric energy produced in the US.## AC motors.In 1824, French physicist François Arago formulated the existence of rotating magnetic fields, termed Arago's rotations, which, by manually turning switches on and off, Walter Baily demonstrated in 1879 as in effect the first primitive induction motor. In the 1880s many.

Electric motor. stator, which does not. It also includes two electrical parts, a set of magnets and an armature, one of which is attached to the rotor and the other to the stator, together forming a magnetic circuit: Field magnets - The magnets create a magnetic field that passes through the armature. These can be electromagnets or permanent magnets. The field magnet is usually on the stator and the armature on the rotor, but in some types of motor these are reversed.## Bearings.The rotor is supported by bearings, which allow the rotor to turn on its axis. The bearings are in turn.

Electric motor. supported by the motor housing.## Rotor.The rotor is the moving part that delivers the mechanical power. The rotor typically holds conductors that carry currents, which the magnetic field of the stator exerts force on to turn the shaft. Alternatively, some rotors carry permanent magnets, and the stator holds the conductors. Permanent magnets offer high efficiency over a larger operating speed and power range.An air gap between the stator and rotor allows it to turn. The width of the gap has a significant effect on the motor's electrical characteristics. It is generally made as small as possible, as a large gap.

Electric motor. weakens performance. It is the main source of the low power factor at which motors operate. The magnetizing current increases and the power factor decreases with the air gap, so narrow gaps are better. Conversely, gaps that are too small may pose mechanical problems in addition to noise and losses.The motor shaft extends through the bearings to the outside of the motor, where the load is applied. Because the forces of the load are exerted beyond the outermost bearing, the load is said to be overhung.## Stator.The stator surrounds the rotor, and usually holds field magnets, which are either electromagnets.

Electric motor. consisting of wire windings around a ferromagnetic iron core or permanent magnets. These create a magnetic field that passes through the rotor armature, exerting force on the windings. The stator core is made up of many thin metal sheets that are insulated from each other, called laminations. Laminations are used to reduce energy losses that would result if a solid core were used. Resin-packed motors, used in washing machines and air conditioners, use the damping properties of resin (plastic) to reduce noise and vibration. These motors encapsulate the stator in plastic.## Armature.The armature consists of wire windings on a ferromagnetic.

Electric motor. core. Electric current passing through the wire causes the magnetic field from the field magnet to exert a force (Lorentz force) on it, turning the rotor, which delivers the mechanical output. Windings are wires that are laid in coils, usually wrapped around a laminated, soft, iron, ferromagnetic core so as to form magnetic poles when energized with current.Electric machines come in salient- and nonsalient-pole configurations. In a salient-pole motor the ferromagnetic cores on the rotor and stator have projections called poles facing each other, with a wire winding around each pole below the pole face, which become north or south.

Electric motor. poles of the magnetic field when current flows through the wire. In a nonsalient-pole (or distributed field or round-rotor) motor, the ferromagnetic core is a smooth cylinder, with the windings distributed evenly in slots about the circumference. Supplying alternating current in the windings creates poles in the core that rotate continuously. A shaded-pole motor has a winding around part of the pole that delays the phase of the magnetic field for that pole.## Commutator.A commutator is a rotary electrical switch that supplies current to the rotor. It periodically reverses the flow of current in the rotor windings as the shaft.

Electric motor. each rotor winding would reverse with each half turn, so the rotor would stop. Commutators are inefficient and commutated motors have been mostly replaced by brushless direct current motors, permanent magnet motors, and induction motors.## Motor supply and control.## Motor supply.A DC motor is usually supplied through a split ring commutator as described above. AC motors' commutation can be achieved using either a slip ring commutator or external commutation. It can be fixed-speed or variable-speed control type, and can be synchronous or asynchronous. Universal motors can run on either AC or DC.## Motor control.DC motors can be operated at variable.

Electric motor. speeds by adjusting the voltage applied to the terminals or by using pulse-width modulation (PWM).AC motors operated at a fixed speed are generally powered directly from the grid or through motor soft starters.AC motors operated at variable speeds are powered with various power inverter, variable-frequency drive or electronic commutator technologies.The term electronic commutator is usually associated with self-commutated brushless DC motor and switched reluctance motor applications.## Types.Electric motors operate on one of three physical principles: magnetism, electrostatics and piezoelectricity.In magnetic motors, magnetic fields are formed in both the rotor and the stator. The product between these two fields gives rise.

Electric motor. to a force, and thus a torque on the motor shaft. One, or both, of these fields must change with the rotation of the rotor. This is done by switching the poles on and off at the right time, or varying the strength of the pole.The main types are DC motors and AC motors, with the latter replacing the former. AC electric motors are either asynchronous or synchronous.Once started, a synchronous motor requires synchrony with the moving magnetic field's speed for all normal torque conditions.In synchronous machines, the magnetic field must be provided by means other than induction, such as.

Electric motor. from separately excited windings or permanent magnets.A fractional-horsepower motor either has a rating below about 1 horsepower (0.746 kW), or is manufactured with a standard-frame size smaller than a standard 1 HP motor. Many household and industrial motors are in the fractional-horsepower class.Notes: Rotation is independent of the frequency of the AC voltage. Rotation is equal to synchronous speed (motor-stator-field speed). In SCIM, fixed-speed operation rotation is equal to synchronous speed, less slip speed. In non-slip energy-recovery systems, WRIM is usually used for motor-starting but can be used to vary load speed. Variable-speed operation. Whereas induction- and synchronous-motor drives are.

Electric motor. typically with either six-step or sinusoidal-waveform output, BLDC-motor drives are usually with trapezoidal-current waveform; the behavior of both sinusoidal and trapezoidal PM machines is, however, identical in terms of their fundamental aspects. In variable-speed operation, WRIM is used in slip-energy recovery and double-fed induction-machine applications. A cage winding is a shorted-circuited squirrel-cage rotor, a wound winding is connected externally through slip rings. Mostly single-phase with some three-phase.Abbreviations: BLAC – Brushless AC BLDC – Brushless DC BLDM – Brushless DC motor EC – Electronic commutator PM – Permanent magnet IPMSM – Interior permanent-magnet synchronous motor PMSM – Permanent magnet synchronous motor.

Electric motor. SPMSM – Surface permanent magnet synchronous motor SCIM – Squirrel-cage induction motor SRM – Switched reluctance motor SyRM – Synchronous reluctance motor VFD – Variable-frequency drive WRIM – Wound-rotor induction motor WRSM – Wound-rotor synchronous motor LRA – Locked-rotor amps: The current you can expect under starting conditions when you apply full voltage. It occurs instantly during start-up. RLA – Rated-load amps: The maximum current a motor should draw under any operating conditions. Often mistakenly called running-load amps, which leads people to believe, incorrectly, that the motor should always pull these amps. FLA – Full-load amps: Changed in 1976 to.

Electric motor. "RLA – rated-load amps".## Self-commutated motor.## Brushed DC motor.Most DC motors are small permanent magnet (PM) types. They contain a brushed internal mechanical commutation to reverse motor windings' current in synchronism with rotation.## Electrically excited DC motor.A commutated DC motor has a set of rotating windings wound on an armature mounted on a rotating shaft. The shaft also carries the commutator. Thus, every brushed DC motor has AC flowing through its windings. Current flows through one or more pairs of brushes that touch the commutator; the brushes connect an external source of electric power to the rotating armature.The rotating armature.

Electric motor. consists of one or more wire coils wound around a laminated, magnetically "soft" ferromagnetic core. Current from the brushes flows through the commutator and one winding of the armature, making it a temporary magnet (an electromagnet). The magnetic field produced interacts with a stationary magnetic field produced by either PMs or another winding (a field coil), as part of the motor frame. The force between the two magnetic fields rotates the shaft. The commutator switches power to the coils as the rotor turns, keeping the poles from ever fully aligning with the magnetic poles of the stator field, so that.

Electric motor. – A set of windings that produces a magnetic field. Commutation: A mechanical technique in which rectification can be achieved, or from which DC can be derived.The five types of brushed DC motor are: Shunt-wound Series-wound Compound (two configurations): Cumulative compound Differentially compounded Permanent magnet (not shown) Separately excited (not shown).## Permanent magnet.A permanent magnet (PM) motor does not have a field winding on the stator frame, relying instead on PMs to provide the magnetic field. Compensating windings in series with the armature may be used on large motors to improve commutation under load. This field is fixed and cannot.

Electric motor. be adjusted for speed control. PM fields (stators) are convenient in miniature motors to eliminate the power consumption of the field winding. Most larger DC motors are of the "dynamo" type, which have stator windings. Historically, PMs could not be made to retain high flux if they were disassembled; field windings were more practical to obtain the needed flux. However, large PMs are costly, as well as dangerous and difficult to assemble; this favors wound fields for large machines.To minimize overall weight and size, miniature PM motors may use high energy magnets made with neodymium; most are neodymium-iron-boron alloy. With.

Electric motor. their higher flux density, electric machines with high-energy PMs are at least competitive with all optimally designed singly-fed synchronous and induction electric machines. Miniature motors resemble the structure in the illustration, except that they have at least three rotor poles (to ensure starting, regardless of rotor position) and their outer housing is a steel tube that magnetically links the exteriors of the curved field magnets.## Electronic commutator (EC).## Brushless DC.Some of the problems of the brushed DC motor are eliminated in the BLDC design. In this motor, the mechanical "rotating switch" or commutator is replaced by an external electronic switch.

Electric motor. synchronised to the rotor's position. BLDC motors are typically 85%+ efficient, reaching up to 96.5%, while brushed DC motors are typically 75–80% efficient.The BLDC motor's characteristic trapezoidal counter-electromotive force (CEMF) waveform is derived partly from the stator windings being evenly distributed, and partly from the placement of the rotor's permanent magnets. Also known as electronically commutated DC or inside-out DC motors, the stator windings of trapezoidal BLDC motors can be single-phase, two-phase or three-phase and use Hall effect sensors mounted on their windings for rotor position sensing and low cost closed-loop commutator control.BLDC motors are commonly used where precise speed.

Electric motor. motors are usually used in small equipment such as computers and are generally used in fans to remove heat. They make little noise, which is an advantage in equipment that is affected by vibrations.Modern BLDC motors range in power from a fraction of a watt to many kilowatts. Larger BLDC motors rated up to about 100 kW are used in electric vehicles. They also find use in electric model aircraft.## Switched reluctance motor.The switched reluctance motor (SRM) has no brushes or permanent magnets, and the rotor has no electric currents. Torque comes from a slight misalignment of poles on the.

Electric motor. rotor with poles on the stator. The rotor aligns itself with the magnetic field of the stator, while the stator field windings are sequentially energized to rotate the stator field.The magnetic flux created by the field windings follows the path of least magnetic sending the flux through rotor poles that are closest to the energized poles of the stator, thereby magnetizing those poles of the rotor and creating torque. As the rotor turns, different windings are energized, keeping the rotor turning.SRMs are used in some appliances and vehicles.## Universal AC/DC motor.A commutated, electrically excited, series or parallel wound motor is.

Electric motor. referred to as a universal motor because it can be designed to operate on either AC or DC power. A universal motor can operate well on AC because the current in both the field and the armature coils (and hence the resultant magnetic fields) synchronously reverse polarity, and hence the resulting mechanical force occurs in a constant direction of rotation.Operating at normal power line frequencies, universal motors are often used in sub-kilowatt applications. Universal motors formed the basis of the traditional railway traction motor in electric railways. In this application, using AC power on a motor designed to run on.

Electric motor. DC would experience efficiency losses due to eddy current heating of their magnetic components, particularly the motor field pole-pieces that, for DC, would have used solid (un-laminated) iron. They are now rarely used.An advantage is that AC power may be used on motors that specifically have high starting torque and compact design if high running speeds are used. By contrast, maintenance is higher and lifetimes are shortened. Such motors are used in devices that are not heavily used, and have high starting-torque demands. Multiple taps on the field coil provide (imprecise) stepped speed control. Household blenders that advertise many speeds.

Electric motor. an asynchronous AC motor where power is transferred to the rotor by electromagnetic induction, much like transformer action. An induction motor resembles a rotating transformer, because the stator (stationary part) is essentially the primary side of the transformer and the rotor (rotating part) is the secondary side. Polyphase induction motors are widely used in industry.## Cage and wound rotor.Induction motors may be divided into Squirrel Cage Induction Motors (SCIM) and Wound Rotor Induction Motors (WRIM). SCIMs have a heavy winding made up of solid bars, usually aluminum or copper, electrically connected by rings at the ends of the rotor. The.

Electric motor. bars and rings as a whole are much like an animal's rotating exercise cage.Currents induced into this winding provide the rotor magnetic field. The shape of the rotor bars determines the speed-torque characteristics. At low speeds, the current induced in the squirrel cage is nearly at line frequency and tends to stay in the outer parts of the cage. As the motor accelerates, the slip frequency becomes lower, and more current reaches the interior. By shaping the bars to change the resistance of the winding portions in the interior and outer parts of the cage, a variable resistance is effectively.

Electric motor. steering wheels.Another common application is to control the throttle of an internal combustion engine with an electronic governor. The motor works against a return spring to move the throttle in accord with the governor output. The latter monitors engine speed by counting electrical pulses from the ignition system or from a magnetic pickup and depending on the speed, makes small adjustments to the amount of current. If the engine slows down relative to the desired speed, the current increases, producing more torque, pulling against the return spring and opening the throttle. Should the engine run too fast, the governor reduces.

Electric motor. the current, allowing the return spring to pull back and reduce the throttle.## Synchronous motor.A synchronous electric motor is an AC motor. It includes a rotor spinning with coils passing magnets at the same frequency as the AC and produces a magnetic field to drive it. It has zero slip under typical operating conditions. By contrast induction motors must slip to produce torque. One type of synchronous motor is like an induction motor except that the rotor is excited by a DC field. Slip rings and brushes conduct current to the rotor. The rotor poles connect to each other and.

Electric motor. when slip rate decreases sufficiently, the rotor (a smooth cylinder) becomes temporarily magnetized. Its distributed poles make it act like a permanent magnet synchronous motor. The rotor material, like that of a common nail, stays magnetized, but can be demagnetized with little difficulty. Once running, the rotor poles stay in place; they do not drift.Low-power synchronous timing motors (such as those for traditional electric clocks) may have multi-pole permanent magnet external cup rotors, and use shading coils to provide starting torque. "Telechron" clock motors have shaded poles for starting torque, and a two-spoke ring rotor that performs like a discrete.

Electric motor. allows for a smaller electronic converter but the cost of the rotor winding and slip rings may offset the saving in the power electronics components. Difficulties affect controlling speed near synchronous speed limit applications.## Special magnetic motors.## Rotary.## Ironless or coreless rotor motor.The coreless or ironless DC motor is a specialized permanent magnet DC motor. Optimized for rapid acceleration, the rotor is constructed without an iron core. The rotor can take the form of a winding-filled cylinder, or a self-supporting structure comprising only wire and bonding material. The rotor can fit inside the stator magnets; a magnetically soft stationary cylinder.

Electric motor. inside the rotor provides a return path for the stator magnetic flux. A second arrangement has the rotor winding basket surrounding the stator magnets. In that design, the rotor fits inside a magnetically soft cylinder that can serve as the motor housing, and provides a return path for the flux.Because the rotor is much lower mass than a conventional rotor, it can accelerate much more rapidly, often achieving a mechanical time constant under one millisecond. This is especially true if the windings use aluminum rather than (heavier) copper. The rotor has no metal mass to act as a heat sink;.

Electric motor. even small motors must be cooled. Overheating can be an issue for these designs.The vibrating alert of cellular phones can be generated by cylindrical permanent-magnet motors, or disc-shaped types that have a thin multipolar disc field magnet, and an intentionally unbalanced molded-plastic rotor structure with two bonded coreless coils. Metal brushes and a flat commutator switch power to the rotor coils.Related limited-travel actuators have no core and a bonded coil placed between the poles of high-flux thin permanent magnets. These are the fast head positioners for rigid-disk ("hard disk") drives. Although the contemporary design differs considerably from that of loudspeakers,.

Electric motor. it is still loosely (and incorrectly) referred to as a "voice coil" structure, because some earlier rigid-disk-drive heads moved in straight lines, and had a drive structure much like that of a loudspeaker.## Pancake or axial rotor motor.The printed armature or pancake motor has windings shaped as a disc running between arrays of high-flux magnets. The magnets are arranged in a circle facing the rotor spaced to form an axial air gap. This design is commonly known as the pancake motor because of its flat profile.The armature (originally formed on a printed circuit board) is made from punched copper sheets.

Electric motor. with 180 (C), Class H rating.The unique advantage of ironless DC motors is the absence of cogging (torque variations caused by changing attraction between the iron and the magnets). Parasitic eddy currents cannot form in the rotor as it is totally ironless, although iron rotors are laminated. This can greatly improve efficiency, but variable-speed controllers must use a higher switching rate (>40 kHz) or DC because of decreased electromagnetic induction.These motors were invented to drive the capstan(s) of magnetic tape drives, where minimal time to reach operating speed and minimal stopping distance were critical. Pancake motors are widely used in.

Electric motor. high-performance servo-controlled systems, robotic systems, industrial automation and medical devices. Due to the variety of constructions now available, the technology is used in applications from high temperature military to low cost pump and basic servos.Another approach (Magnax) is to use a single stator sandwiched between two rotors. One such design has produced peak power of 15 kW/kg, sustained power around 7.5 kW/kg. This yokeless axial flux motor offers a shorter flux path, keeping the magnets further from the axis. The design allows zero winding overhang; 100 percent of the windings are active. This is enhanced with the use of rectangular-crosssection.

Electric motor. copper wire. The motors can be stacked to work in parallel. Instabilities are minimized by ensuring that the two rotor discs put equal and opposing forces onto the stator disc. The rotors are connected directly to one another via a shaft ring, cancelling out the magnetic forces.Magnax motors range in size from 0.15-5.4 (m) in diameter.## Servo motor.A servo motor is a motor that is used within a position-control or speed-control feedback system. Servomotors are used in applications such as machine tools, pen plotters, and other process systems. Motors intended for use in a servomechanism must have predictable characteristics for.

Electric motor. speed, torque, and power. The speed/torque curve is important and is high ratio for a servo motor. Dynamic response characteristics such as winding inductance and rotor inertia are important; these factors limit performance. Large, powerful, but slow-responding servo loops may use conventional AC or DC motors and drive systems with position or speed feedback. As dynamic response requirements increase, more specialized motor designs such as coreless motors are used. AC motors' superior power density and acceleration characteristics tends to favor permanent magnet synchronous, BLDC, induction, and SRM drive approaches.A servo system differs from some stepper motor applications in that position.

Electric motor. feedback is continuous while the motor is running. A stepper system inherently operates open-loop—relying on the motor not to "miss steps" for short term accuracy—with any feedback such as a "home" switch or position encoder external to the motor system.## Stepper motor.Stepper motors are typically used to provide precise rotations. An internal rotor containing permanent magnets or a magnetically soft rotor with salient poles is controlled by a set of electronically switched external magnets. A stepper motor may also be thought of as a cross between a DC electric motor and a rotary solenoid. As each coil is energized in.

Electric motor. turn, the rotor aligns itself with the magnetic field produced by the energized field winding. Unlike a synchronous motor, the stepper motor may not rotate continuously; instead, it moves in steps—starting and then stopping—advancing from one position to the next as field windings are energized and de-energized in sequence. Depending on the sequence, the rotor may turn forwards or backwards, and it may change direction, stop, speed up or slow down at any time.Simple stepper motor drivers entirely energize or entirely de-energize the field windings, leading the rotor to "cog" to a limited number of positions. Microstepping drivers can proportionally.

Electric motor. made them uncompetitive—thus newer hard disk drives use voice coil-based head actuator systems. (The term "voice coil" in this connection is historic; it refers to the structure in a cone-type loudspeaker.)Stepper motors are often used in computer printers, optical scanners, and digital photocopiers to move the active element, the print head carriage (inkjet printers), and the platen or feed rollers.So-called quartz analog wristwatches contain the smallest commonplace stepping motors; they have one coil, draw little power, and have a permanent magnet rotor. The same kind of motor drives battery-powered quartz clocks. Some of these watches, such as chronographs, contain more.

Electric motor. 1978 era HP 7225A pen plotter used two linear stepper motors to move the pen along the X and Y axes.## Electromagnetism.## Force and torque.An electric motor converts electrical energy to mechanical energy through the force between two opposed magnetic fields. At least one of the two magnetic fields must be created by an electromagnet through the magnetic field caused by an electrical current.The force between a current formula_1 in a conductor of length formula_2 perpendicular to a magnetic field formula_3 may be calculated using the Lorentz force law: formula_4Note: X denotes vector cross product. The most general approaches to.

Electric motor. resistance Ir2 – square of current induced in the rotor s – motor slip; i.e., difference between synchronous speed and slip speed, which provides the relative movement needed for current induction in the rotor.## Back EMF.The movement of armature windings of a direct-current or universal motor through a magnetic field, induce a voltage in them. This voltage tends to oppose the motor supply voltage and so is called "back electromotive force (EMF)". The voltage is proportional to the running speed of the motor. The back EMF of the motor, plus the voltage drop across the winding internal resistance and brushes,.

Electric motor. enacted legislation to encourage the manufacture and use of higher-efficiency motors. Electric motors have efficiencies ranging from at least 15% for shaded pole motors, up to 98% for permanent magnet motors, with efficiency also dependent on load. Peak efficiency is usually at 75% of the rated load. So (as an example) a 10 HP motor is most efficient when driving a load that requires 7.5 HP. Efficiency also depends on motor size; larger motors tend to be more efficient. Some motors can not operate continually for more than a specified period of time (e.g. for more than an hour per.

Electric motor. run)## Goodness factor.Eric Laithwaite proposed a metric to determine the 'goodness' of an electric motor: formula_21Where: formula_22 is the goodness factor (factors above 1 are likely to be efficient) formula_23 are the cross sectional areas of the magnetic and electric circuit formula_24 are the lengths of the magnetic and electric circuits formula_25 is the permeability of the core formula_20 is the angular frequency the motor is driven atFrom this, he showed that the most efficient motors are likely to have relatively large magnetic poles. However, the equation only directly relates to non PM motors.## Performance parameters.## Torque.Electromagnetic motors derive torque.

Electric motor. from the vector product of the interacting fields. Calculating torque requires knowledge of the fields in the air gap. Once these have been established, the torque is the integral of all the force vectors multiplied by the vector's radius. The current flowing in the winding produces the fields. For a motor using a magnetic material the field is not proportional to the current.A figure relating the current to the torque can inform motor selection. The maximum torque for a motor depends on the maximum current, absent thermal considerations.When optimally designed within a given core saturation constraint and for a given.

Electric motor. active current (i.e., torque current), voltage, pole-pair number, excitation frequency (i.e., synchronous speed), and air-gap flux density, all categories of electric motors/generators exhibit virtually the same maximum continuous shaft torque (i.e., operating torque) within a given air-gap area with winding slots and back-iron depth, which determines the physical size of electromagnetic core. Some applications require bursts of torque beyond the maximum, such as bursts to accelerate an electric vehicle from standstill. Always limited by magnetic core saturation or safe operating temperature rise and voltage, the capacity for torque bursts beyond the maximum differs significantly across motor/generator types.Electric machines without a.

Electric motor. transformer circuit topology, such as that of WRSMs or PMSMs, cannot provide torque bursts without saturating the magnetic core. At that point, additional current cannot increase torque. Furthermore, the permanent magnet assembly of PMSMs can be irreparably damaged.Electric machines with a transformer circuit topology, such as induction machines, induction doubly-fed electric machines, and induction or synchronous wound-rotor doubly-fed (WRDF) machines, permit torque bursts because the EMF-induced active current on either side of the transformer oppose each other and thus contribute nothing to the transformer coupled magnetic core flux density, avoiding core saturation.Electric machines that rely on induction or asynchronous principles.

Electric motor. the air-gap area and the back-iron depth, which are determined by the power rating of the armature winding set, the speed of the machine, and the achievable air-gap flux density before core saturation. Despite the high coercivity of neodymium or samarium-cobalt permanent magnets, continuous torque density is virtually the same amongst electric machines with optimally designed armature winding sets. Continuous torque density relates to method of cooling and permissible operation period before destruction by overheating of windings or permanent magnet damage.Other sources state that various e-machine topologies have differing torque density. One source shows the following:where—specific torque density is normalized.

Electric motor. to 1.0 for the surface permanent magnet (SPM)—brushless ac, 180° current conduction.Torque density is approximately four times greater for liquid cooled motors, compared to those which are air cooled.A source comparing direct current, induction motors (IM), PMSM and SRM showed:Another source notes that PMSM up to 1 MW have considerably higher torque density than induction machines.## Continuous power density.The continuous power density is determined by the product of the continuous torque density and the constant torque speed range. Electric motors can achieve densities of up to 20KW/KG, meaning 20 Kilowatts of output power per kilogram.## Acoustic noise and vibrations.Acoustic noise.

Electric motor. and vibrations are usually classified in three sources: mechanical sources (e.g. due to bearings) aerodynamic sources (e.g. due to shaft-mounted fans) magnetic sources (e.g. due to magnetic forces such as Maxwell and magnetostriction forces acting on stator and rotor structures)The latter source, which can be responsible for the "whining noise" of electric motors, is called electromagnetically induced acoustic noise.## Standards.The following are major design, manufacturing, and testing standards covering electric motors: American Petroleum Institute: API 541 Form-Wound Squirrel Cage Induction Motors – 375 kW (500 Horsepower) and Larger American Petroleum Institute: API 546 Brushless Synchronous Machines – 500 kVA and.

Electric motor. 60072 Dimensions and output series for rotating electrical machines National Electrical Manufacturers Association: MG-1 Motors and Generators Underwriters Laboratories: UL 1004 – Standard for Electric Motors Indian Standard: IS:12615-2018 – Line Operated Three Phase a.c. Motors (IE CODE) “Efficiency Classes and Performance Specification” (Third Revision)## Non-magnetic motors.An electrostatic motor is based on the attraction and repulsion of electric charge. Usually, electrostatic motors are the dual of conventional coil-based motors. They typically require a high-voltage power supply, although small motors employ lower voltages. Conventional electric motors instead employ magnetic attraction and repulsion, and require high current at low voltages. In the.

Electric motor. produces acoustic or ultrasonic vibrations to produce linear or rotary motion. In one mechanism, the elongation in a single plane is used to make a series of stretches and position holds, similar to the way a caterpillar moves.An electrically powered spacecraft propulsion system uses electric motor technology to propel spacecraft in outer space. Most systems are based on electrically accelerating propellant to high speed, while some systems are based on electrodynamic tethers principles of propulsion to the magnetosphere. Electric generator Regenerative brake Goodness factor Motor capacitor Traction motor Motor controller Houston, Edwin J.; Kennelly, Arthur, "Recent Types of Dynamo-Electric Machinery",.


Question: What equipment or engine is used by this object to provide power?

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Airplane. subsequently abandoned work on it.In the 1890s, Lawrence Hargrave conducted research on wing structures and developed a box kite that lifted the weight of a man. His box kite designs were widely adopted. Although he also developed a type of rotary aircraft engine, he did not create and fly a powered fixed-wing aircraft.Between 1867 and 1896, the German pioneer of human aviation Otto Lilienthal developed heavier-than-air flight. He was the first person to make well-documented, repeated, successful gliding flights. Lilienthal's work led to him developing the concept of the modern wing, his flight attempts in 1891 are seen as the.

Airplane. cylinders "radiate" outward from a central crankcase like the spokes of a wheel and was commonly used for aircraft engines before gas turbine engines became predominant. An inline engine is a reciprocating engine with banks of cylinders, one behind another, rather than rows of cylinders, with each bank having any number of cylinders, but rarely more than six, and may be water-cooled. A flat engine is an internal combustion engine with horizontally-opposed cylinders.## Gas turbine.A turboprop gas turbine engine consists of an intake, compressor, combustor, turbine, and a propelling nozzle, which provide power from a shaft through a reduction gearing.

Airplane. resulted in reduced noise from aircraft engines in response to increased noise pollution from growth in air traffic over urban areas near airports.Small planes can be designed and constructed by amateurs as homebuilts. Other homebuilt aircraft can be assembled using pre-manufactured kits of parts that can be assembled into a basic plane and must then be completed by the builder.Few companies produce planes on a large scale. However, the production of a plane for one company is a process that actually involves dozens, or even hundreds, of other companies and plants, that produce the parts that go into the plane.


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

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Pontederia crassipes. Pontederia crassipes (formerly "Eichhornia crassipes"), commonly known as common water hyacinth is an aquatic plant native to South America, naturalized throughout the world, and often invasive outside its native range. It is the sole species of the subgenus "Oshunae" within the genus "Pontederia". Anecdotally, it is known as the "terror of Bengal" due to its invasive growth tendencies.## Description.Water hyacinth is a free-floating perennial aquatic plant (or hydrophyte) native to tropical and sub-tropical South America. With broad, thick, glossy, ovate leaves, water hyacinth may rise above the surface of the water as much as 1 (m) in height. The leaves.

Pontederia crassipes. and stimulation of cell wall-bound peroxidase activity in the root tissues of "Mimosa pigra". (Complete List of References) "Eichhornia crassipes"Species Profile – Water Hyacinth ("Eichhornia crassipes"), National Invasive Species Information Center, United States National Agricultural Library. Lists general information and resources for Water Hyacinth.Eichhornia crassipes Israel Wildflowers and native plantsPractical uses of Water HyacinthIUCN Leaflet on "E. crassipes" in the context of Lake Tanganyika"Water hyacinth", AquaPlant Profile.


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

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Begijnhof, Amsterdam. The Begijnhof is one of the oldest hofjes in Amsterdam, Netherlands. A group of historic buildings, mostly private dwellings, centre on it. As the name suggests, it was originally a Béguinage. Today it is also the site of two churches, the Catholic "Houten Huys" and the English Reformed Church.## Earliest times.The Begijnhof is the only inner court in Amsterdam which was founded during the Middle Ages, and therefore lies within the Singel — the innermost canal of Amsterdam's circular canal system. The Begijnhof is at medieval street level, which means a meter below the rest of the old city center.It.

Begijnhof, Amsterdam. is unclear when exactly the Begijnhof (Beguines' court) was founded. In 1346, the beguines still lived in a house (a document of that time mentioned one "beghynhuys"). A courtyard was only first mentioned in 1389, probably after the religious status of the city rose due to the Amsterdam Eucharistic Miracle of 1345.Originally the Begijnhof was entirely encircled by water (the "Nieuwezijds Voorburgwal", the "Spui" and the "Begijnensloot" or "Beguines' Ditch"), with the sole entrance located at the "Begijnensteeg" ("Beguines' Alley"), which had a bridge across the Begijnensloot. The back facades were therefore water-locked. The Spui entrance only dates back to.

Begijnhof, Amsterdam. the 19th century.## Characteristics.The Begijnhof differs from the usual Amsterdam patricians' court in that this old people's home was not founded by private persons. It bore closer resemblance to a convent, although the beguines enjoyed greater freedom than nuns in a convent. While beguines took a vow of chastity, and while they considered themselves obliged to attend Holy Mass every day and pray various official prayers, they were free to leave the court at any time in order to get married.## Tall Amsterdam houses.The buildings in the court are tall, characteristically Amsterdam-style town-houses, emphasising the court's relatively private character. The.

Begijnhof, Amsterdam. Begijnhof is the only court whose houses have addresses bearing the name of the court itself. Unlike most courts, the houses here do not form rows joining one dwelling with another; instead, there are 47 regular town houses, each with its individual aspect, and most of them with facades from the 17th and 18th centuries. However, the buildings themselves are usually of earlier date, eighteen of them still possessing a Gothic wooden framework.## The Wooden House.The ancient, restored wooden house ("Het Houten Huys", 34 Begijnhof) is famous as one of the two wooden houses still existing in the center of.

Begijnhof, Amsterdam. Amsterdam (the other one being Zeedijk 1); there are annexed villages like Nieuwendam (Amsterdam North) with many wooden houses and even a wooden church. This house dates from about 1528, and is the oldest wooden house in Amsterdam.The courtyard has two bleaching greens, one on each side of the chapel.## Gates.The old Begijnesloot gate, restored in 1907, dates from 1574 and has a gable stone depicting Saint Ursula, patron saint of the Amsterdam beguines. The Spui gate from about 1725 was replaced by the present gatehouse in the 19th century. The Begijnhof has a great number of gable stones, many.

Begijnhof, Amsterdam. of which show a strong Roman Catholic character.## Religious strife.After the Alteration (Protestant takeover) of 1578, when Amsterdam came under Calvinist rule, the Begijnhof was the only Roman Catholic institution to be allowed to remain in existence. This was because the houses were the beguines' private property. The Chapel, however, was closed and lay empty for around 30 years before being ceded to the English Presbyterians, and since that time has been alluded to as the "English Church". Several of the pulpit panels were designed by Piet Mondrian.## A clandestine church.In 1671, the architect Philip Vingboons converted two dwellings opposite.

Begijnhof, Amsterdam. the Chapel entrance into a "schuilkerk", or conventicle church, for Catholics, the "Church of the Saints John and Ursula", named after the patron saints of the Begijnhof. This church was kept secret, as was demanded by the city government, and could not be recognized as a church from the outside. In 1908 this became the Miracle Church, after the original Miracle Church had been deliberately destroyed by its Protestant owners.## Buried in the gutter.The most famous beguine in the Begijnhof's history is sister Cornelia Arens, who died on 14 October 1654. (Her date of birth is unknown, but she professed.

Begijnhof, Amsterdam. the vows of chastity and the Catholic faith on 6 July 1621.) Rather than be laid to rest in the Chapel, which she considered "desecrated" by Presbyterians, she chose to be buried in the gutter of the court. Legend has it that contrary to her wish, she was in fact buried in the Chapel, but her coffin was found in the adjoining gutter the following day. This happened two more times, until she was at last laid to rest in the gutter. Another version of the legend is that her soul found no peace and roamed the court at night.

Begijnhof, Amsterdam. until she was buried in the gutter.## The last beguine."Sister Antonia", whose original name was Agatha Kaptein, was born on 13 April 1887 at Akersloot. The last beguine, she died on 23 May 1971 at the age of 84. She was buried in the Sisters' Grave in the St. Barbara's Roman Catholic Cemetery in Amsterdam on 26 May of the same year.## Renovation.Until its renovation in 1979, the court had 140 dwellings — some 110 of them consisting of a single room, and about 25 comprising two. The occupants likewise numbered 140. The renovations enlarged the houses to two or.

Begijnhof, Amsterdam. three rooms. Since that time, the number of female inhabitants has been an unvaried 105. Beguines and Beghards Website of the Begijnhof Images of Begijnhof.


Question: What fields are the person in the image specialized in?

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Gardener. A gardener is someone who practices gardening, either professionally or as a hobby.## Description.A gardener is any person involved in gardening, arguably the oldest occupation, from the hobbyist in a residential garden, the home-owner supplementing the family food with a small vegetable garden or orchard, to an employee in a plant nursery or the head gardener in a large estate.## Garden design and maintenance.The garden designer is someone who will design the garden, and the gardener is the person who will undertake the work to produce the desired outcome.## Design.The term gardener is also used to describe garden designers and.

Gardener. landscape architects, who are involved chiefly in the design of gardens, rather than the practical aspects of horticulture. Garden design is considered to be an art in most cultures, distinguished from gardening, which generally means "garden maintenance". Vita Sackville-West, Gertrude Jekyll and William Robinson were garden designers as well as gardeners.Garden design is the creation of a plan for the construction of a garden, in a design process. The product is the garden, and the garden designers attempt to optimize the given general conditions of the soil, location and climate, ecological, and geological conditions and processes to choose the right.

Gardener. such as starting young plants from seeds for later transplantation are usually performed in early spring.History of gardeningLandscape architectureCelebrity gardenerList of professional gardenersGarden centreFlower gardenOrder of Free Gardeners.