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

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Western whiptail. The western whiptail ("Aspidoscelis tigris") is a species of lizard in the family Teiidae. The species ranges throughout most of the southwestern United States and northern Mexico. Most of its populations appear stable, and it is not listed as endangered in any of the states comprising its range. It lives in a wide variety of habitats, including deserts and semiarid shrubland, usually in areas with sparse vegetation; it also may be found in woodland, open dry forest, and riparian growth. It lives in burrows. Major differences between this species and the checkered whiptail ("Aspidoscelis tesselatus") include the lack of enlarged.

Western whiptail. scales anterior to the gular fold and the presence of enlarged postantebrachial scales. It was previously known as "Cnemidophorus tigris", until phylogenetic analyses concluded that the genus "Cnemidophorus" was polyphyletic. Since it does not migrate, a number of forms have developed in different regions, several of which have been given subspecific names – for example the California whiptail, "Aspidoscelis tigris munda".## Description.The western whiptail has a long and slender body, small grainy scales on its back, and larger rectangular scales on its belly. The upper side often has light stripes, and the throat can be pinkish or somewhat orange in.

Western whiptail. containing both males and females, unlike other species of "Aspidoscelis" which are all-female. Usually in the northern end of its range, mating occurs in the first half of June, and females begin to lay eggs in late June. The eggs usually begin hatching by mid-August. Females will only lay one clutch (number of eggs laid at a single time) per year. At the southern end of its range, however, females will begin to lay eggs as early as May, and the eggs will usually hatch as early as mid-June. In the southern end of its range, females may also lay.

Western whiptail. lot of stored food. This is a tactic often used when the lizard is threatened by a domestic or feral cat.## Subspecies.Including the nominotypical subspecies, 16 subspecies of "Aspidoscelis tigris" are recognized as being valid."A. t. aethiops" "A. t. dickersonae" "A. t. disparilis" "A. t. multiscutata" "A. t. munda" "A. t. nigroriens" "A. t. pulchra" "A. t. punctata" "A. t. punctilinealis" "A. t. rubida" "A. t. septentrionalis" "A. t. stejnegeri" "A. t. tigris" "A. t. vandenburghi" "A. t. variolosa" "A. t. vivida" "Nota bene": A trinomial authority in parentheses indicates that the subspecies was originally described in a genus other.

Western whiptail. than "Aspidoscelis".## Etymology.The subspecific names, "dickersonae, stejnegeri", and "vandenburghi", are in honor of American herpetologists Mary Cynthia Dickerson, Leonhard Stejneger, and John Van Denburgh, respectively.www.natureserve.org — An excellent, well-documented site for information on this and other American species.Baird, Spencer F.; Girard, Charles (1852). "Characteristics of some New Reptiles in the Museum of the Smithsonian Institution". "Proc. Acad. Nat. Sci. Philadelphia" 6: 68–70. ("Cnemidophorus tigris", new species, p. 69).Behler, John L.; (1979). "The Audubon Society Field Guide to North American Reptiles and Amphibians". New York: Alfred A. Knopf. 743 pp. . ("Cnemidophorus tigris", pp. 563–564 + Plate 420).Conant, Roger (1975). "A.


Question: In which year was this item invented or discovered?

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

Telephone. A telephone is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be heard directly. A telephone converts sound, typically and most efficiently the human voice, into electronic signals that are transmitted via cables and other communication channels to another telephone which reproduces the sound to the receiving user. The term is derived from ("tēle", "far") and φωνή ("phōnē", "voice"), together meaning "distant voice". A common short form of the term is phone, which came into use almost immediately after the first patent was issued.In 1876, Alexander Graham Bell.

Telephone. inventions such as radio, television, the light bulb, and the computer, several inventors pioneered experimental work on "voice transmission over a wire" and improved on each other's ideas. New controversies over the issue still arise from time to time. Charles Bourseul, Antonio Meucci, Johann Philipp Reis, Alexander Graham Bell, and Elisha Gray, amongst others, have all been credited with the invention of the telephone.Alexander Graham Bell was the first to be awarded a patent for the electric telephone by the United States Patent and Trademark Office (USPTO) in March 1876. Before Bell's patent, the telephone transmitted sound in a way.

Telephone. that was similar to the telegraph. This method used vibrations and circuits to send electrical pulses, but was missing key features. Bell found that this method produced a sound through intermittent currents, but in order for the telephone to work a fluctuating current reproduced sounds the best. The fluctuating currents became the basis for the working telephone, creating Bell's patent. That first patent by Bell was the "master patent" of the telephone, from which other patents for electric telephone devices and features flowed. The Bell patents were forensically victorious and commercially decisive.In 1876, shortly after Bell's patent application, Hungarian engineer.

Telephone. that English technicians to whom Mr. Manzetti illustrated his method for transmitting spoken words on the telegraph wire intend to apply said invention in England on several private telegraph lines". However, telephones would not be demonstrated there until 1876, with a set of telephones from Bell. 28 December 1871: Antonio Meucci files patent caveat No. 3335 in the U.S. Patent Office titled "Sound Telegraph", describing communication of voice between two people by wire. A 'patent caveat' was not an invention patent award, but only an unverified notice filed by an individual that he or she intends to file a regular.

Telephone. patent application in the future. 1874: Meucci, after having renewed the caveat for two years does not renew it again, and the caveat lapses. 6 April 1875: Bell's U.S. Patent 161,739 "Transmitters and Receivers for Electric Telegraphs" is granted. This uses multiple vibrating steel reeds in make-break circuits. 11 February 1876: Elisha Gray invents a liquid transmitter for use with the telephone but does not build one. 14 February 1876: Gray files a patent caveat for transmitting the human voice through a telegraphic circuit. 14 February 1876: Alexander Graham Bell applies for the patent "Improvements in Telegraphy", for electromagnetic telephones.

Telephone. using what is now called amplitude modulation (oscillating current and voltage) but which he referred to as "undulating current". 19 February 1876: Gray is notified by the U.S. Patent Office of an interference between his caveat and Bell's patent application. Gray decides to abandon his caveat. 7 March 1876: Bell's U.S. patent 174,465 "Improvement in Telegraphy" is granted, covering "the method of, and apparatus for, transmitting vocal or other sounds telegraphically…by causing electrical undulations, similar in form to the vibrations of the air accompanying the said vocal or other sound." 10 March 1876: The first successful telephone transmission of clear.

Telephone. speech using a liquid transmitter when Bell spoke into his device, "Mr. Watson, come here, I want to see you." and Watson heard each word distinctly. 30 January 1877: Bell's U.S. patent 186,787 is granted for an electromagnetic telephone using permanent magnets, iron diaphragms, and a call bell. 27 April 1877: Edison files for a patent on a carbon (graphite) transmitter. The patent 474,230 was granted 3 May 1892, after a 15-year delay because of litigation. Edison was granted patent 222,390 for a carbon granules transmitter in 1879.## Early commercial instruments.Early telephones were technically diverse. Some used a water microphone,.

Telephone. (MMS) Party line (telephony) Phone hacking Satellite phone SIM card Spamming Telephone keypad Telephone jack and plug Telephone tapping Tip and ring Videophone Brooks, John (1976). "Telephone: The first hundred years". HarperCollins. Casson, Herbert Newton. (1910) "The history of the telephone" online. Coe, Lewis (1995). "The Telephone and Its Several Inventors: A History." Jefferson, NC: McFarland & Co. Evenson, A. Edward (2000). "The Telephone Patent Conspiracy of 1876: The Elisha Gray – Alexander Bell Controversy." Jefferson, NC: McFarland & Co. Fischer, Claude S. (1994) "America calling: A social history of the telephone to 1940" (Univ of California Press, 1994) Huurdeman,.

Telephone. Anton A. (2003). "The Worldwide History of Telecommunications" Hoboken: NJ: Wiley-IEEE Press. John, Richard R. (2010). "Network Nation: Inventing American Telecommunications." Cambridge, MA: Harvard University Press. MacDougall, Robert. "The People's Network: The Political Economy of the Telephone in the Gilded Age." Philadelphia: University of Pennsylvania Press. Mueller, Milton. (1993) "Universal service in telephone history: A reconstruction." "Telecommunications Policy" 17.5 (1993): 352–69. Todd, Kenneth P. (1998), "A Capsule History of the Bell System". American Telephone & Telegraph Company (AT&T). Early U.S. Telephone Industry Data Virtual museum of early telephones The Telephone, 1877 —"Telegraphy" (Bell's first telephone patent)—Alexander Graham Bell US 186,787—"Electric.


Question: What is this building named after?

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Marienstiftskirche, Lich. Falkenstein, as a collegiate church (German: "Kollegiatstift") with ten canons, which was intended to educate young men for the priesthood. Three neighbouring churches were incorporated along with Lich. A large amount of property of the surrounding churches and districts was donated for the maintenance of the college. In the year of the college's foundation, a new, stone church was begun which was roughly two-thirds the size of the present building. The hall church, with a long choir and rood screen was consecrated to Mary on 7 May 1320. It survived less than two hundred years. In 1510 it was entirely.

Marienstiftskirche, Lich. of the archdiaconate. The collegiate church possessed four altars, dedicated to Our Lady, the Holy Trinity, St John, and St Anne. As a result of the Reformation, the collegiate church was converted to Lutheranism in 1555. The first Lutheran priest was Heinrich Götz who served from 1564 to 1567. The church was renovated in 1594, as recorded by an inscription in a medallion above the choir, "One thousand five hundred four and Ninety years after Christ's birth, This church building's Renovation was With god's help brought to completion entirely in the same Year that saw The Groundstones Beginning to be.

Marienstiftskirche, Lich. pillars of the choir also show signs of the planned rib vaulting. Under the altar there is a crypt, containing the bodily remains of the counts and their family.The nave is lit by two levels of windows with pointed arches in the side galleries, which are separated by a cornice. The choir has five large windows with pointed arches. In the northeastern choir window are the remains of the old stained glass windows, which include a depiction of Mary with Child in the aureole from the previous church and one of Elizabeth of Hungary from the date of the present.


Question: What is this item named after?

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Rolodex. A Rolodex is a rotating card file device used to store business contact information. Its name, a portmanteau of the words "rolling" and "index", has become somewhat genericized (usually as "rolodex") for any personal organizer performing this function, or as a metonym for the total of an individual's accumulated business contacts. In this usage, it has generally come to describe an effect or characteristic of the small-world network of a business's investors, board of directors, or the value of a CEO's contacts, or in organizational structure. The Rolodex is iconic enough as a piece of ubiquitous business furniture that it.


Question: Which geographic area is this bird found?

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

Peregrine falcon. are sexually dimorphic, with females being considerably larger than males.The peregrine's breeding range includes land regions from the Arctic tundra to the tropics. It can be found nearly everywhere on Earth, except extreme polar regions, very high mountains, and most tropical rainforests; the only major ice-free landmass from which it is entirely absent is New Zealand. This makes it the world's most widespread raptor, and one of the most widely found bird species. In fact, the only land-based bird species found over a larger geographic area is not always naturally occurring, but one widely introduced by humans, the rock pigeon,.

Peregrine falcon. use of certain pesticides, especially DDT. Since the ban on DDT from the early 1970s, populations have recovered, supported by large-scale protection of nesting places and releases to the wild.The peregrine falcon is a well-respected falconry bird due to its strong hunting ability, high trainability, versatility, and availability via captive breeding. It is effective on most game bird species, from small to large. It has also been used as a religious, royal, or national symbol across multiple eras and areas of human civilization.## Description.The peregrine falcon has a body length of 34 (to(-)) and a wingspan from 74 (to(-)). The.

Peregrine falcon. male and female have similar markings and plumage but, as with many birds of prey, the peregrine falcon displays marked sexual dimorphism in size, with the female measuring up to 30% larger than the male. Males weigh 330 (to(-)) and the noticeably larger females weigh 700 (to(-)). In most subspecies, males weigh less than 700 (g) and females weigh more than 800 (g), and cases of females weighing about 50% more than their male breeding mates are not uncommon. The standard linear measurements of peregrines are: the wing chord measures 26.5 (to(-)), the tail measures 13 (to(-)) and the tarsus.

Peregrine falcon. measures 4.5 (to(-)).The back and the long pointed wings of the adult are usually bluish black to slate grey with indistinct darker barring (see "Subspecies" below); the wingtips are black. The white to rusty underparts are barred with thin clean bands of dark brown or black. The tail, coloured like the back but with thin clean bars, is long, narrow, and rounded at the end with a black tip and a white band at the very end. The top of the head and a "moustache" along the cheeks are black, contrasting sharply with the pale sides of the neck and.

Peregrine falcon. white throat. The cere is yellow, as are the feet, and the beak and claws are black. The upper beak is notched near the tip, an adaptation which enables falcons to kill prey by severing the spinal column at the neck. An immature bird is much browner, with streaked, rather than barred, underparts, and has a pale bluish cere and orbital ring.A study shows that their black malar stripe exists to reduce glare from solar radiation, allowing them to see better. Photos from The Macaulay Library and iNaturalist showed that the malar stripe is thicker where there is more solar.

Peregrine falcon. radiation. That supports the solar glare hypothesis.## Taxonomy and systematics."Falco peregrinus" was first described under its current binomial name by English ornithologist Marmaduke Tunstall in his 1771 work "Ornithologia Britannica". The scientific name "Falco peregrinus" is a Medieval Latin phrase that was used by Albertus Magnus in 1225. The specific name is taken from the fact that juvenile birds were taken while journeying to their breeding location rather than from the nest, as falcon nests were difficult to get at. The Latin term for falcon, , is related to , meaning "sickle", in reference to the silhouette of the falcon's.

Peregrine falcon. long, pointed wings in flight.The peregrine falcon belongs to a genus whose lineage includes the hierofalcons and the prairie falcon ("F. mexicanus"). This lineage probably diverged from other falcons towards the end of the Late Miocene or in the Early Pliocene, about 5–8 million years ago (mya). As the peregrine-hierofalcon group includes both Old World and North American species, it is likely that the lineage originated in western Eurasia or Africa. Its relationship to other falcons is not clear, as the issue is complicated by widespread hybridization confounding mtDNA sequence analyses. For example, a genetic lineage of the saker falcon.

Peregrine falcon. ("F. cherrug") is known which originated from a male saker producing fertile young with a female peregrine ancestor, and the descendants further breeding with sakers.Today, peregrines are regularly paired in captivity with other species such as the lanner falcon ("F. biarmicus") to produce the "perilanner", a somewhat popular bird in falconry as it combines the peregrine's hunting skill with the lanner's hardiness, or the gyrfalcon to produce large, strikingly coloured birds for the use of falconers. As can be seen, the peregrine is still genetically close to the hierofalcons, though their lineages diverged in the Late Pliocene (maybe some 2.5–2.

Peregrine falcon. found in the Rocky Mountains today. It was formerly common throughout North America between the tundra and northern Mexico, where current reintroduction efforts are seeking to restore the population. Most mature "anatum", except those that breed in more northern areas, winter in their breeding range. Most vagrants that reach western Europe seem to belong to the more northern and strongly migratory "tundrius", only considered distinct since 1968. It is similar to the nominate subspecies, but is slightly smaller; adults are somewhat paler and less patterned below, but juveniles are darker and more patterned below. Males weigh 500 (to(-)), while females.

Peregrine falcon. weigh 800 (to(-)). It has become extinct in eastern North America and populations there are hybrids as a result of reintroductions of birds from elsewhere.Falco peregrinus babylonicus, described by P.L. Sclater in 1861, is found in eastern Iran along the Hindu Kush and the Tian Shan to the Mongolian Altai ranges. A few birds winter in northern and northwestern India, mainly in dry semi-desert habitats. It is paler than "pelegrinoides" and somewhat similar to a small, pale lanner falcon ("Falco biarmicus"). Males weigh 330 to 400 (g), while females weigh 513 to 765 (g)., described by Sharpe in 1873, is.

Peregrine falcon. also known as the Mediterranean peregrine falcon or the Maltese falcon. It includes "caucasicus" and most specimens of the proposed race "punicus", though others may be "pelegrinoides" (Barbary falcons), or perhaps the rare hybrids between these two which might occur around Algeria. They occur from the Iberian Peninsula around the Mediterranean, except in arid regions, to the Caucasus. They are non-migratory. It is smaller than the nominate subspecies and the underside usually has a rusty hue. Males weigh around 445 (g), while females weigh up to 920 (g)., described by John Latham in 1790, it was formerly called "leucogenys" and.

Peregrine falcon. includes "caeruleiceps". It breeds in the Arctic tundra of Eurasia from Murmansk Oblast to roughly Yana and Indigirka Rivers, Siberia. It is completely migratory and travels south in winter as far as South Asia and sub-Saharan Africa. It is often seen around wetland habitats. It is paler than the nominate subspecies, especially on the crown. Males weigh 588 (to(-)), while females weigh 925 (to(-)).Falco peregrinus cassini, described by Sharpe in 1873, is also known as the austral peregrine falcon. It includes "kreyenborgi", the pallid falcon, a leucistic colour morph occurring in southernmost South America, which was long believed to be.

Peregrine falcon. found from northeast Siberia to Kamchatka (though it is possibly replaced by "pealei" on the coast there) and Japan. Northern populations are migratory, while those of Japan are resident. It is similar to the nominate subspecies, but the young are even darker than those of "anatum".Falco peregrinus macropus, described by Swainson in 1837, is the Australian peregrine falcon. It is found in Australia in all regions except the southwest. It is non-migratory. It is similar to "brookei" in appearance, but is slightly smaller and the ear region is entirely black. The feet are proportionally large.Falco peregrinus madens, described by Ripley.

Peregrine falcon. and Watson in 1963, is unusual in having some sexual dichromatism. If the Barbary falcon (see below) is considered a distinct species, it is sometimes placed therein. It is found in the Cape Verde Islands and is non-migratory; it is also endangered, with only six to eight pairs surviving. Males have a rufous wash on the crown, nape, ears and back; the underside is conspicuously washed pinkish-brown. Females are tinged rich brown overall, especially on the crown and nape.Falco peregrinus minor, first described by Bonaparte in 1850. It was formerly often known as "perconfusus". It is sparsely and patchily distributed.

Peregrine falcon. and the Aleutian Islands to the far eastern Bering Sea coast of Russia, and may also occur on the Kuril Islands and the coasts of Kamchatka. It is non-migratory. It is the largest subspecies and it looks like an oversized and darker "tundrius" or like a strongly barred and large "anatum". The bill is very wide. Juveniles occasionally have pale crowns. Males weigh 700 (to(-)), while females weigh 1000 (to(-)).Falco peregrinus pelegrinoides, first described by Temminck in 1829, is found in the Canary Islands through North Africa and the Near East to Mesopotamia. It is most similar to "brookei", but.

Peregrine falcon. also reported from the Andaman and Nicobar Islands in the Bay of Bengal. It has a clutch size of 3 to 4 eggs, with the chicks fledging time of 48 days with an average nesting success of 1.32 chicks per nest. In India, apart from nesting on cliffs, it has also been recorded as nesting on man-made structures such as buildings and cellphone transmission towers. A population estimate of 40 breeding pairs in Sri Lanka was made in 1996. It is non-migratory and is small and dark, with rufous underparts. In Sri Lanka this species is found to favour the.

Peregrine falcon. higher hills, while the migrant "calidus" is more often seen along the coast., the nominate (first-named) subspecies, described by Tunstall in 1771, breeds over much of temperate Eurasia between the tundra in the north and the Pyrenees, Mediterranean region and Alpide belt in the south. It is mainly non-migratory in Europe, but migratory in Scandinavia and Asia. Males weigh 580 (to(-)), while females weigh 925 (to(-)). It includes "brevirostris", "germanicus", "rhenanus" and "riphaeus".Falco peregrinus radama, described by Hartlaub in 1861, is found in Madagascar and the Comoros. It is non-migratory.Falco peregrinus submelanogenys, described by Mathews in 1912, is the Southwest.

Peregrine falcon. "calidus". Juveniles are browner and less grey than in "calidus" and paler, sometimes almost sandy, than in "anatum". Males weigh 500 (to(-)), while females weigh 800 (to(-)). Despite its current recognition as a valid subspecies, a population genetic study of both pre-decline (i.e., museum) and recovered contemporary populations failed to distinguish genetically the "anatum" and "tundrius" subspecies.## Barbary falcon.The Barbary falcon is a subspecies of the peregrine falcon that inhabits parts of North Africa; namely, from the Canary Islands to the Arabian Peninsula. There is discussion concerning the taxonomic status of the bird, with some considering it a subspecies of.

Peregrine falcon. by comparison with the peregrine falcon and its feet are smaller. Barbary falcons breed at different times of year than neighboring peregrine falcon subspecies, but they are capable of interbreeding. There is a 0.6–0.7% genetic distance in the peregrine falcon-Barbary falcon ("peregrinoid") complex.## Ecology and behaviour.The peregrine falcon lives mostly along mountain ranges, river valleys, coastlines, and increasingly in cities. In mild-winter regions, it is usually a permanent resident, and some individuals, especially adult males, will remain on the breeding territory. Only populations that breed in Arctic climates typically migrate great distances during the northern winter.The peregrine falcon reaches faster.

Peregrine falcon. speeds than any other animal on the planet when performing the stoop, which involves soaring to a great height and then diving steeply at speeds of over 320 (km/h), hitting one wing of its prey so as not to harm itself on impact. The air pressure from such a dive could possibly damage a bird's lungs, but small bony tubercles on a falcon's nostrils are theorized to guide the powerful airflow away from the nostrils, enabling the bird to breathe more easily while diving by reducing the change in air pressure. To protect their eyes, the falcons use their nictitating.

Peregrine falcon. membranes (third eyelids) to spread tears and clear debris from their eyes while maintaining vision. The distinctive malar stripe or 'moustache', a dark area of feathers below the eyes, is thought to reduce solar glare and improve contrast sensitivity when targeting fast moving prey in bright light condition; the malar stripe has been found to be wider and more pronounced in regions of the world with greater solar radiation supporting this solar glare hypothesis. Peregrine falcons have a flicker fusion frequency of 129 Hz (cycles per second), very fast for a bird of its size, and much faster than mammals.

Peregrine falcon. as pigeons and doves, phasianids, waterfowl, songbirds, and waders. This falcon tends to nest on tall buildings or bridges, and these urban dwelling birds subsist mostly on different pigeons. Worldwide, it is estimated that between 1,500 and 2,000 bird species (up to roughly a fifth of the world's bird species) are predated somewhere by these falcons. In North America, prey has varied in size from 3 (g) hummingbirds ("Selasphorus" and "Archilochus" ssp.) to a 3.1 (kg) sandhill crane (killed in Alaska by a peregrine in a stoop), although most prey taken by peregrines weigh from 20 (g) (small passerines) to.

Peregrine falcon. wood pigeons, common swifts, northern flickers, common starlings, American robins, common blackbirds, and corvids (such as magpies, jays, or carrion, house, and American crows). Other than bats (in the genera "Eptesicus", "Myotis", "Pipistrellus", and "Tadarida") taken at night, the peregrine rarely hunts mammals, but will on occasion take small species such as rats, voles, lemmings, hares, shrews, mice and squirrels. Coastal populations of the large subspecies "pealei" feed almost exclusively on seabirds. In the Brazilian mangrove swamp of Cubatão, a wintering falcon of the subspecies "tundrius" was observed while successfully hunting a juvenile scarlet ibis. Insects and reptiles (such as.

Peregrine falcon. in the Netherlands and at Oxford University used 3D computer simulations in 2018 to show that the high speed allows peregrines to gain better maneuverability and precision in strikes.## Reproduction.The peregrine falcon is sexually mature at one to three years of age, but in larger populations they breed after two to three years of age. A pair mates for life and returns to the same nesting spot annually. The courtship flight includes a mix of aerial acrobatics, precise spirals, and steep dives. The male passes prey it has caught to the female in mid-air. To make this possible, the female.

Peregrine falcon. actually flies upside-down to receive the food from the male's talons.During the breeding season, the peregrine falcon is territorial; nesting pairs are usually more than 1 (km) apart, and often much farther, even in areas with large numbers of pairs. The distance between nests ensures sufficient food supply for pairs and their chicks. Within a breeding territory, a pair may have several nesting ledges; the number used by a pair can vary from one or two up to seven in a 16-year period. The peregrine falcon nests in a scrape, normally on cliff edges. The female chooses a nest site,.

Peregrine falcon. the Arctic, steep slopes and even low rocks and mounds may be used as nest sites. In many parts of its range, peregrines now also nest regularly on tall buildings or bridges; these human-made structures used for breeding closely resemble the natural cliff ledges that the peregrine prefers for its nesting locations.The pair defends the chosen nest site against other peregrines, and often against ravens, herons, and gulls, and if ground-nesting, also such mammals as foxes, wolverines, felids, bears, wolves, and mountain lions. Both nests and (less frequently) adults are predated by larger-bodied raptorial birds like eagles, large owls, or.

Peregrine falcon. fledged peregrine, the larger owl was in turn killed by a stooping peregrine parent.The date of egg-laying varies according to locality, but is generally from February to March in the Northern Hemisphere, and from July to August in the Southern Hemisphere, although the Australian subspecies "macropus" may breed as late as November, and equatorial populations may nest anytime between June and December. If the eggs are lost early in the nesting season, the female usually lays another clutch, although this is extremely rare in the Arctic due to the short summer season. Generally three to four eggs, but sometimes as.

Peregrine falcon. few as one or as many as five, are laid in the scrape. The eggs are white to buff with red or brown markings. They are incubated for 29 to 33 days, mainly by the female, with the male also helping with the incubation of the eggs during the day, but only the female incubating them at night. The average number of young found in nests is 2.5, and the average number that fledge is about 1.5, due to the occasional production of infertile eggs and various natural losses of nestlings.After hatching, the chicks (called "es") are covered with creamy-white.

Peregrine falcon. of smaller and medium-sized subspecies, and the females of the smaller subspecies, excel in the taking of swift and agile small game birds such as dove, quail, and smaller ducks. The females of the larger subspecies are capable of taking large and powerful game birds such as the largest of duck species, pheasant, and grouse. They were handled by falconers and are also occasionally used to scare away birds at airports to reduce the risk of bird-plane strikes, improving air-traffic safety. They were also used to intercept homing pigeons during World War II.Peregrine falcons have been successfully bred in captivity,.

Peregrine falcon. both for falconry and for release into the wild. Until 2004 nearly all peregrines used for falconry in the US were captive-bred from the progeny of falcons taken before the US Endangered Species Act was enacted and from those few infusions of wild genes available from Canada and special circumstances. Peregrine falcons were removed from the United States' endangered species list in 1999. The successful recovery program was aided by the effort and knowledge of falconers – in collaboration with The Peregrine Fund and state and federal agencies – through a technique called hacking. Finally, after years of close work.

Peregrine falcon. increased in Scotland in terms of territory occupancy and breeding success, although spatial variation in recovery rates indicate that in some areas Peregrines were also impacted by other factors such as persecution.## Recovery efforts.Peregrine falcon recovery teams breed the species in captivity. The chicks are usually fed through a chute or with a hand puppet mimicking a peregrine's head, so they cannot see to imprint on the human trainers. Then, when they are old enough, the rearing box is opened, allowing the bird to train its wings. As the fledgling gets stronger, feeding is reduced, forcing the bird to learn.

Peregrine falcon. to hunt. This procedure is called hacking back to the wild. To release a captive-bred falcon, the bird is placed in a special cage at the top of a tower or cliff ledge for some days or so, allowing it to acclimate itself to its future environment.Worldwide recovery efforts have been remarkably successful. The widespread restriction of DDT use eventually allowed released birds to breed successfully. The peregrine falcon was removed from the U.S. Endangered Species list on 25 August 1999.Some controversy has existed over the origins of captive breeding stock used by the Peregrine Fund in the recovery of.

Peregrine falcon. peregrine falcons throughout the contiguous United States. Several peregrine subspecies were included in the breeding stock, including birds of Eurasian origin. Due to the extirpation of the eastern population of "Falco peregrinus anatum", the near-extirpation of "anatum" in the Midwest and the limited gene pool within North American breeding stock, the inclusion of non-native subspecies was justified to optimize the genetic diversity found within the species as a whole.During the 1970s, peregrine falcons in Finland experienced a population bottleneck as a result of large declines associated with bio-accumulation of organochloride pesticides. However, the genetic diversity of peregrines in Finland is.

Peregrine falcon. similar to other populations, indicating that high dispersal rates have maintained the genetic diversity of this species.Since peregrine falcon eggs and chicks are still often targeted by illegal poachers, it is common practice not to publicize unprotected nest locations.## Current status.Populations of the peregrine falcon have bounced back in most parts of the world. In the United Kingdom, there has been a recovery of populations since the crash of the 1960s. This has been greatly assisted by conservation and protection work led by the Royal Society for the Protection of Birds. The RSPB has estimated that there are 1,402 breeding.

Peregrine falcon. pairs in the UK. In Canada, where peregrines were identified as endangered in 1978 (in the Yukon territory of northern Canada that year, only a single breeding pair was identified), the Committee on the Status of Endangered Wildlife in Canada declared the species no longer at risk in December 2017. They continue to be protected against hunting and sale in the U.S. through the Migratory Bird Treaty Act. Restoration programs throughout the country have had an effect; for example, in 2015 peregrines were removed from the Illinois’s Endangered and Threatened Species List. Peregrine falcons are listed in Appendix I of.

Peregrine falcon. the Convention on International Trade in Endangered Species (CITES) meaning international trade (including in parts and derivatives) is regulated and commercial international trade of wild-sourced specimens is prohibited.Peregrines now breed in many mountainous and coastal areas, especially in the west and north, and nest in some urban areas, capitalising on the urban feral pigeon populations for food. In Southampton, a nest prevented restoration of mobile telephony services for several months, after Vodafone engineers despatched to repair a faulty transmitter mast discovered a nest in the mast, and were prevented by the Wildlife and Countryside Act – on pain of a.

Peregrine falcon. possible prison sentence – from proceeding with repairs until the chicks fledged. In many parts of the world peregrine falcons have adapted to urban habitats, nesting on cathedrals, skyscraper window ledges, tower blocks, and the towers of suspension bridges. Many of these nesting birds are encouraged, sometimes gathering media attention and often monitored by cameras.## Cultural significance.Due to its striking hunting technique, the peregrine has often been associated with aggression and martial prowess. The ancient Egyptians used the falcon—modeled on the peregrine and the related lanner falcon—as a symbol of royal power and divine authority. Their solar deity Ra in.

Peregrine falcon. princes in formal hierarchies of birds of prey, just below the gyrfalcon associated with kings. It was considered "a royal bird, more armed by its courage than its claws". Terminology used by peregrine breeders also used the Old French term , "of noble birth; aristocratic", particularly with the peregrine.The peregrine falcon is the national animal of the United Arab Emirates. Since 1927, the peregrine falcon has been the official mascot of Bowling Green State University in Bowling Green, Ohio. The 2007 U.S. Idaho state quarter features a peregrine falcon. The peregrine falcon has been designated the official city bird of.

Peregrine falcon. Chicago."The Peregrine", by J. A. Baker, is widely regarded as one of the best nature books in English written in the twentieth century. Admirers of the book include Robert Macfarlane, Mark Cocker, who regards the book as "one of the most outstanding books on nature in the twentieth century" and Werner Herzog, who called it "the one book I would ask you to read if you want to make films", and said elsewhere "it has prose of the calibre that we have not seen since Joseph Conrad".An episode of the hour-long TV series "Starman" in 1986 titled "Peregrine" was about.

Peregrine falcon. an injured peregrine falcon and the endangered species program. It was filmed with the assistance of the University of California's peregrine falcon project in Santa Cruz.Streamed footage from several webcams at the University of California, Berkeley, that followed a breeding pair on a university bell tower achieved notoriety in the early2020s. Webcams such as these which livestream the daily lives of urban peregrines are immensely popular, and are essential for the outreach programmes of raptor conservationists around the world. List of birds by flight speed Perilanner, a hybrid of the peregrine falcon and the lanner falcon ("Falco biarmicus") Perlin, a.

Peregrine falcon. hybrid of the peregrine falcon and the merlin ("Falco columbarius") Conservation organizations Arctic Raptors – Ongoing research with raptors in the Canadian Arctic Falcon Research Group Peregrine Falcon Fund The Canadian Peregrine Foundation Peregrine Falcon Recovery Project (Manitoba) London Peregrine Partnership (UK) Video and other media of peregrines Live webcams at a Peregrine nest site in Landshut (Scroll down and press play button.) A video of the falcon stooping at a top speed of 389 (km/h). Derby Cathedral Peregrine Project, UK. Links to webcams and video sequences Norwich Cathedral Peregrine Web Cam 2015, UK. The Raptor Resource Project. Links to.

Peregrine falcon. Peregrine Falcon webcams Peregrines on Brussels Cathedral Photo documentation of Peregrines returning to south California beach cliffs after over 50 years absence Nottingham Trent University, where peregrines return to breed on the top of the Newton building every year. Includes images and webcam. University of Massachusetts Amherst Live Falcon Cam at the top of the W.E.B. DuBois library, active each year from when the bonded pair of peregrine falcons brood eggs until the chicks are fledged. Worcester Peregrine Falcon Project, UK. Includes feeds from 'Peregrines in Worcester' Facebook Fan page, YouTube & Flickr photo groups Peregrine Falcon Banding, Metropolitan Transportation.


Question: Which place is this animal endemic to?

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Cane toad. The cane toad (Rhinella marina), also known as the giant neotropical toad or marine toad, is a large, terrestrial true toad native to South and mainland Central America, but which has been introduced to various islands throughout Oceania and the Caribbean, as well as Northern Australia. It is a member of the genus "Rhinella", which includes many true toad species found throughout Central and South America, but it was formerly assigned to the genus "Bufo".The cane toad is an old species. A fossil toad (specimen UCMP 41159) from the La Venta fauna of the late Miocene in Colombia is indistinguishable.

Cane toad. from modern cane toads from northern South America. It was discovered in a floodplain deposit, which suggests the "R. marina" habitat preferences have long been for open areas. The cane toad is a prolific breeder; females lay single-clump spawns with thousands of eggs. Its reproductive success is partly because of opportunistic feeding: it has a diet, unusual among anurans, of both dead and living matter. Adults average 10 – 15 (cm) in length; the largest recorded specimen had a snout-vent length of 24 (cm).The cane toad has poison glands, and the tadpoles are highly toxic to most animals if ingested.

Cane toad. "Dominican toad", "giant marine toad", and "South American cane toad". In Trinidadian English, they are commonly called "crapaud", the French word for toad.The genus "Rhinella" is considered to constitute a distinct genus of its own, thus changing the scientific name of the cane toad. In this case, the specific name "marinus" (masculine) changes to "marina" (feminine) to conform with the rules of gender agreement as set out by the International Code of Zoological Nomenclature, changing the binomial name from "Bufo marinus" to "Rhinella marina"; the binomial "Rhinella marinus" was subsequently introduced as a synonym through misspelling by Pramuk, Robertson, Sites,.

Cane toad. and Noonan (2008). Though controversial (with many traditional herpetologists still using "Bufo marinus") the binomial "Rhinella marina" is gaining in acceptance with such bodies as the IUCN, Encyclopaedia of Life, Amphibian Species of the World and increasing numbers of scientific publications adopting its usage.Since 2016, cane toad populations native to Mesoamerica and northwestern South America are sometimes considered to be a separate species, "Rhinella horribilis".In Australia, the adults may be confused with large native frogs from the genera "Limnodynastes", "Cyclorana", and "Mixophyes". These species can be distinguished from the cane toad by the absence of large parotoid glands behind their.

Cane toad. toads lose the toxicity that protected them as eggs and tadpoles, but have yet to fully develop the parotoid glands that produce bufotoxin. Only an estimated 0.5% of cane toads reach adulthood, in part because they lack this key defense - but also due to tadpole cannibalism. Although cannibalism does occur in the native population in South America, the rapid evolution occurring in the unnaturally large population in Australia has produced tadpoles 30x more likely to be "interested" in cannibalising their siblings, and 2.6x more likely to actually "do so". They have also evolved to shorten their tadpole phase in.

Cane toad. Saw-shelled Turtles have also been seen successfully and safely eating cane toads.## Distribution.The cane toad is native to the Americas, and its range stretches from the Rio Grande Valley in South Texas to the central Amazon and southeastern Peru, and some of the continental islands near Venezuela (such as Trinidad and Tobago). This area encompasses both tropical and semiarid environments. The density of the cane toad is significantly lower within its native distribution than in places where it has been introduced. In South America, the density was recorded to be 20 adults per 100 m (109 yd) of shoreline, 1.

Cane toad. in spite of the failure of the earlier introductions. On September 8, 2013, the cane toad was also discovered on the island of New Providence in the Bahamas.## The Philippines.The cane toad was first introduced deliberately into the Philippines in 1930 as a biological control agent of pests in sugarcane plantations, after the success of the experimental introductions into Puerto Rico. It subsequently became the most ubiquitous amphibian in the islands. It still retains the common name of "bakî" or "kamprag" in the Visayan languages, a corruption of 'American frog', referring to its origins. It is also commonly known as.

Cane toad. 17 months. The toads were sent to the other islands, and more than 100,000 toads were distributed by July 1934; eventually over 600,000 were transported.## Uses.Other than the use as a biological control for pests, the cane toad has been employed in a number of commercial and noncommercial applications. Traditionally, within the toad's natural range in South America, the Embera-Wounaan would "milk" the toads for their toxin, which was then employed as an arrow poison. The toxins may have been used as an entheogen by the Olmec people. The toad has been hunted as a food source in parts of.


Question: What is the basionym of this plant?

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Erythranthe moschata. Erythranthe moschata is a species of monkeyflower known by the common names muskflower, musk monkeyflower, and formerly as the common musk, eyebright and musk plant. It was formerly known as "Mimulus moschatus".## Distribution and habitat.It is native to western North America from British Columbia to California to the Rocky Mountains, where it grows in moist meadows and stream banks.It also occurs in eastern North America where it may be native or introduced. It is known from Chile and parts of Europe, including England and Finland, where it grows wild after having escaped cultivation.## Description.This is a rhizomatous perennial herb which.


Question: Which artist inspired this object?

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Stereophonic sound. with minimal phase difference between channels.## History.## Early work.Clément Ader demonstrated the first two-channel audio system in Paris in 1881, with a series of telephone transmitters connected from the stage of the Paris Opera to a suite of rooms at the Paris Electrical Exhibition, where listeners could hear a live transmission of performances through receivers for each ear. "Scientific American" reported:This two-channel telephonic process was commercialized in France from 1890 to 1932 as the Théâtrophone, and in England from 1895 to 1925 as the Electrophone. Both were services available by coin-operated receivers at hotels and cafés, or by subscription to.


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

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Forest bug. The forest bug or red-legged shieldbug ("Pentatoma rufipes") is a species of shield bug in the family Pentatomidae, commonly found in most of Europe. It inhabits forests, woodlands, orchards, and gardens.## Description."P. rufipes" can reach a length of 11 - 14 (mm). These large and flat shield bugs are shaped like an escutcheon-type shield. They have a dark brown body in autumn, lighter in summer, usually bronze-colored. They show red-orange to cream markings at the tip of their scutella. The connexium usually has dark brown, reddish, and light blue bands. The legs and the first segment of the antennae are.


Question: What is the basionym of this plant?

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Gymnadenia conopsea. Gymnadenia conopsea, commonly known as the fragrant orchid or chalk fragrant orchid, is a herbaceous plant of the family Orchidaceae native to northern Europe.## Etymology.The name of the genus "Gymnadenia" is formed from Greek words (', "nude") and (', "gland") and refers to the characteristics of the organs for secreting nectar. The specific Latin name "conopsea" derives from the Greek ' ('), literally meaning "mosquito-like", probably because of the similarity of the long spur of the flower with the mouthparts of a mosquito.The scientific binomial name of this plant was initially "Orchis conopsea", proposed by the Swedish naturalist and botanist.

Gymnadenia conopsea. Gren. Rouy 1912 "Gymnadenia pyrenaica" Giraudias 1882 "Gymnadenia sibirica" Turcz. ex Lindl. 1835 "Gymnadenia splendida" Dworschak 2002 "Gymnadenia splendida subsp. odorata" Dworschak 2002 "Gymnadenia transsilvanica" Schur 1866 "Gymnadenia vernalis" Dworschak 2002 "Gymnadenia wahlenbergii" Afzel. ex Rchb.f. 1851 "Habenaria conopsea" (L.) Benth. (1880) "Habenaria gymnadenia" Druce 1897 "Orchis conopea" Gras 1862 "Orchis conopsea" L. 1753 "Orchis cornopica" Mill. 1768 "Orchis ornithis" Jacq. 1774 "Orchis peloria" Foucault ex Poir. 1816 "Orchis pseudoconopea" Gren. 1869 "Orchis pseudo-conopsea" Gren. 1865 "Orchis pseudoconopsea" J.Parm. 1894 "Orchis setacea" Gilib. 1792 "Orchis suaveolens" Salisb. 1796 "Satyrium conopseum" (L.) Wahlenb. 1826 Pignatti S. - Flora d'Italia (3 voll.).


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

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White-winged dove. The white-winged dove (Zenaida asiatica) is a dove whose native range extends from the Southwestern United States through Mexico, Central America, and the Caribbean. They are large for doves, and can be distinguished from similar doves by the distinctive white edge on their wings. They have a blue eyering, and red eyes. The plumage is brownish-gray to gray. Juveniles are duller in color, and have brown eyes. The call is likened to English phrase "who cooks for you". There are three subspecies. It was first described by George Edwards in 1743, and given its binomial name by Linnaeus in 1756.

White-winged dove. It was moved into the genus "Zenaida" in 1838.They inhabit a variety of environments, including desert, scrub, and urban. Their diet consists mostly of grains, but will also include pollen and nectar, especially from the saguaro cactus, which is a vital source of water.The expansion of humans has greatly affected the white-winged dove. Prior to human presence, their range closely mirrored that of their favorite food: the saguaro. The advent of agriculture in North America greatly expanded its range by providing a reliable food source. This has also led some modern populations to be migratory. Historically, they nested in enormous.

White-winged dove. North America north of Mexico. The "Zenaida" doves evolved in South America, and then dispersed into Central and North America.English naturalist George Edwards included an illustration and a description of the white-winged dove in his "A Natural History of Uncommon Birds", which was published in 1743. The dove was also briefly described by Irish physician Patrick Browne in 1756 in his "The Civil and Natural History of Jamaica". When in 1758, Swedish naturalist Carl Linnaeus updated his "Systema Naturae" for the tenth edition, he placed the white-winged dove with all the other pigeons in the genus "Columba". Linnaeus included a.

White-winged dove. brief description, coined the binomial name "Columba asiatica", and cited the earlier authors. The type locality is Jamaica. The dove is now placed in the genus "Zenaida" that was introduced in 1838 by French naturalist Charles Lucien Bonaparte.The West Peruvian dove used to be considered part of the white-winged dove species, but was split off as its own species in 1997 though together they form a superspecies.The genus "Zenaida" was named for Zénaïde Laetitia Julie Princesse Bonaparte, the wife of Charles Lucien Bonaparte. The specific epithet "asiatica" means Asiatic, likely meant in reference to the Indies. The naming is erroneous,.

White-winged dove. now mainly gone, and are not expected to return. Despite this, the white-winged dove has proved adaptable to human disturbance, and is regarded as a species of least concern by the International Union for Conservation of Nature. "National Geographic" Field Guide to the Birds of North America Handbook of the Birds of the World Vol 4, Josep del Hoyo editor, "National Audubon Society" The Sibley Guide to Birds, by David Allen Sibley, White-winged Dove Species Account – Cornell Lab of Ornithology White-winged Dove – "Zenaida asiatica" – USGS Patuxent Bird Identification InfoCenter Stamps (for Belize, Cayman Islands, Honduras, Mexico, and.


Question: Who occupies this building?

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Palais de Chaillot. Niclausse and Félix-Alexandre Desruelles.The buildings now house a number of museums: the "Musée national de la Marine" (naval museum) and the "Musée de l'Homme" (prehistory and anthropology) in the southern ("Passy") wing, the "Cité de l'Architecture et du Patrimoine", including the "Musée national des Monuments Français", in the eastern ("Paris") wing, from which one also enters the "Théâtre national de Chaillot", a theatre below the esplanade.It was on the front terrace of the palace that Adolf Hitler was pictured during his short tour of the city in 1940, with the Eiffel Tower in the background. This became an iconic image.


Question: Who is the creator of this object?

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Golliwog. The golliwog, also spelled golliwogg or shortened to golly, is a doll-like character – created by cartoonist and author Florence Kate Upton – that appeared in children's books in the late 19th century, usually depicted as a type of rag doll. It was reproduced, both by commercial and hobby toy-makers, as a children's toy called the "golliwog", a portmanteau of "golly" and "polliwog", and had great popularity in the UK and Australia into the 1970s. The doll is characterised by jet black skin, eyes rimmed in white, exaggerated red lips and frizzy hair, a blackface minstrel tradition. Today the word.

Golliwog. least known of the major anti-black caricatures in the United States". Changing political attitudes with regard to race have reduced the popularity and sales of golliwogs as toys. Manufacturers who have used golliwogs as a motif (e.g. Robertson's marmalade in the UK) have either withdrawn them as an icon or changed the name. In particular, the use of alternative names such as "golly" and "golly doll" has risen due to association with the pejorative term "wog", which many dictionaries say probably derived from the golliwog.## In fiction.Florence Kate Upton was born in 1873 in Flushing, New York, United States, the.


Question: What is this building dedicated to?

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Tarkhany. Tarkhany () is a Writer's house museum in a Russian estate where the Romantic writer Mikhail Lermontov (1814–1841) spent his childhood and was buried. The late 18th Century–early 19th Century estate is located in the village of Lermontovo (formerly Tarkhany) in the Belinsky District of Penza Oblast. Tarkhany is the main tourist attraction of Penza Oblast.Manor houseChurch of St. Mary of EgyptThe Human cottage (restored)Steward's house (restored)Arseniev Crypt and chapelCountryside Church of the Archangel MichaelLodge## The estate today.The estate is now the State Lermontov Museum — Tarkhany Reserve, created in 1939. It has an area of 485.3 acres. The museum.


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

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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.


Question: What product does this item produce?

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Power inverter. A power inverter, inverter or invertor is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC). The resulting AC frequency obtained depends on the particular device employed. Inverters do the opposite of rectifiers which were originally large electromechanical devices converting AC to DC.The input voltage, output voltage and frequency, and overall power handling depend on the design of the specific device or circuitry. The inverter does not produce any power; the power is provided by the DC source.A power inverter can be entirely electronic or may be a combination of mechanical effects (such as.

Power inverter. a rotary apparatus) and electronic circuitry.Static inverters do not use moving parts in the conversion process.Power inverters are primarily used in electrical power applications where high currents and voltages are present; circuits that perform the same function for electronic signals, which usually have very low currents and voltages, are called oscillators. Circuits that perform the opposite function, converting AC to DC, are called rectifiers.## Input and output.## Input voltage.A typical power inverter device or circuit requires a stable DC power source capable of supplying enough current for the intended power demands of the system. The input voltage depends on the.

Power inverter. are two basic designs for producing household plug-in voltage from a lower-voltage DC source, the first of which uses a switching boost converter to produce a higher-voltage DC and then converts to AC. The second method converts DC to AC at battery level and uses a line-frequency transformer to create the output voltage.## Square wave.This is one of the simplest waveforms an inverter design can produce and is best suited to low-sensitivity applications such as lighting and heating. Square wave output can produce "humming" when connected to audio equipment and is generally unsuitable for sensitive electronics.## Sine wave.A power inverter.

Power inverter. device that produces a multiple step sinusoidal AC waveform is referred to as a "sine wave inverter". To more clearly distinguish the inverters with outputs of much less distortion than the "modified sine wave" (three-step) inverter designs, the manufacturers often use the phrase "pure sine wave inverter". Almost all consumer grade inverters that are sold as a "pure sine wave inverter" do not produce a smooth sine wave output at all, just a less choppy output than the square wave (two-step) and modified sine wave (three-step) inverters. However, this is not critical for most electronics as they deal with the.

Power inverter. output quite well.Where power inverter devices substitute for standard line power, a sine wave output is desirable because many electrical products are engineered to work best with a sine wave AC power source. The standard electric utility provides a sine wave, typically with minor imperfections but sometimes with significant distortion.Sine wave inverters with more than three steps in the wave output are more complex and have significantly higher cost than a modified sine wave, with only three steps, or square wave (one step) types of the same power handling. Switch-mode power supply (SMPS) devices, such as personal computers or DVD.

Power inverter. players, function on modified sine wave power. AC motors directly operated on non-sinusoidal power may produce extra heat, may have different speed-torque characteristics, or may produce more audible noise than when running on sinusoidal power.## Modified sine wave.The modified sine wave is the sum of two square waves, one of which is delayed one-quarter of the period with respect to the other. The result is a waveform which has voltage steps of zero, peak positive, zero, peak negative and again zero. This voltage value sequence is repeated continuously. The resultant voltage waveform better approximates the shape of a sinusoidal voltage.

Power inverter. entirely without problems, but if the item has a mains transformer, this can overheat depending on how marginally it is rated.However, the load may operate less efficiently owing to the harmonics associated with a modified sine wave and produce a humming noise during operation. This also affects the efficiency of the system as a whole, since the manufacturer's nominal conversion efficiency does not account for harmonics. Therefore, pure sine wave inverters may provide significantly higher efficiency than modified sine wave inverters.Most AC motors will run on MSW inverters with an efficiency reduction of about 20% owing to the harmonic content.

Power inverter. DC supply, in the manner of the MSN designs, but the switching takes place at a far faster rate, typically many KHz, so that the varying width of the pulses can be smoothed to create the sine wave. If a microprocessor is used to generate the switching timing, the harmonic content and efficiency can be closely controlled.## Output frequency.The AC output frequency of a power inverter device is usually the same as standard power line frequency, 50 or 60 hertz. The exception is in designs for motor driving, where a variable frequency results in a variable speed control.Also, if the.

Power inverter. output of the device or circuit is to be further conditioned (for example stepped up) then the frequency may be much higher for good transformer efficiency.## Output voltage.The AC output voltage of a power inverter is often regulated to be the same as the grid line voltage, typically 120 or 240 VAC at the distribution level, even when there are changes in the load that the inverter is driving. This allows the inverter to power numerous devices designed for standard line power.Some inverters also allow selectable or continuously variable output voltages.## Output power.A power inverter will often have an overall.

Power inverter. battery from the others.## Applications.## DC power source usage.An inverter converts the DC electricity from sources such as batteries or fuel cells to AC electricity. The electricity can be at any required voltage; in particular it can operate AC equipment designed for mains operation, or rectified to produce DC at any desired voltage.## Uninterruptible power supplies.An uninterruptible power supply (UPS) uses batteries and an inverter to supply AC power when mains power is not available. When mains power is restored, a rectifier supplies DC power to recharge the batteries.## Electric motor speed control.Inverter circuits designed to produce a variable output.

Power inverter. voltage range are often used within motor speed controllers.The DC power for the inverter section can be derived from a normal AC wall outlet or some other source. Control and feedback circuitry is used to adjust the final output of the inverter section which will ultimately determine the speed of the motor operating under its mechanical load. Motor speed control needs are numerous and include things like: industrial motor driven equipment, electric vehicles, rail transport systems, and power tools.Switching states are developed for positive, negative and zero voltages as per the patterns given in the switching Table 1. The generated.

Power inverter. gate pulses are given to each switch in accordance with the developed pattern and thus the output is obtained.## In refrigeration compressors.An inverter can be used to control the speed of the compressor motor to drive variable refrigerant flow in a refrigeration or air conditioning system to regulate system performance. Such installations are known as inverter compressors. Traditional methods of refrigeration regulation use single-speed compressors switched on and off periodically; inverter-equipped systems have a variable-frequency drive that control the speed of the motor and thus the compressor and cooling output. The variable-frequency AC from the inverter drives a brushless or.

Power inverter. induction motor, the speed of which is proportional to the frequency of the AC it is fed, so the compressor can be run at variable speeds—eliminating compressor stop-start cycles increases efficiency. A microcontroller typically monitors the temperature in the space to be cooled, and adjusts the speed of the compressor to maintain the desired temperature. The additional electronics and system hardware add cost to the equipment, but can result in substantial savings in operating costs. The first inverter air conditioners were released by Toshiba in 1981, in Japan.## Power grid.Grid-tied inverters are designed to feed into the electric power distribution.

Power inverter. hundred megawatts, are used to deliver power from high voltage direct current transmission systems to alternating current distribution systems.## Solar.A solar inverter is a balance of system (BOS) component of a photovoltaic system and can be used for both grid-connected and off-grid systems. Solar inverters have special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.Solar micro-inverters differ from conventional inverters, as an individual micro-inverter is attached to each solar panel. This can improve the overall efficiency of the system. The output from several micro-inverters is then combined and often fed to the electrical.

Power inverter. grid.In other applications, a conventional inverter can be combined with a battery bank maintained by a solar charge controller. This combination of components is often referred to as a solar generator.Solar inverters are also used in spacecraft photovoltaic system.## Induction heating.Inverters convert low frequency main AC power to higher frequency for use in induction heating. To do this, AC power is first rectified to provide DC power. The inverter then changes the DC power to high frequency AC power. Due to the reduction in the number of DC sources employed, the structure becomes more reliable and the output voltage has.

Power inverter. higher resolution due to an increase in the number of steps so that the reference sinusoidal voltage can be better achieved. This configuration has recently become very popular in AC power supply and adjustable speed drive applications. This new inverter can avoid extra clamping diodes or voltage balancing capacitors.There are three kinds of level shifted modulation techniques, namely: Phase Opposition Disposition (POD) Alternative Phase Opposition Disposition (APOD) Phase Disposition (PD)## HVDC power transmission.With HVDC power transmission, AC power is rectified and high voltage DC power is transmitted to another location. At the receiving location, an inverter in a static inverter.

Power inverter. plant converts the power back to AC. The inverter must be synchronized with grid frequency and phase and minimize harmonic generation.## Electroshock weapons.Electroshock weapons and tasers have a DC/AC inverter to generate several tens of thousands of V AC out of a small 9 V DC battery. First the 9 V DC is converted to 400–2000 V AC with a compact high frequency transformer, which is then rectified and temporarily stored in a high voltage capacitor until a pre-set threshold voltage is reached. When the threshold (set by way of an airgap or TRIAC) is reached, the capacitor dumps its.

Power inverter. entire load into a pulse transformer which then steps it up to its final output voltage of 20–60 kV. A variant of the principle is also used in electronic flash and bug zappers, though they rely on a capacitor-based voltage multiplier to achieve their high voltage.## Miscellaneous.Typical applications for power inverters include: Portable consumer devices that allow the user to connect a battery, or set of batteries, to the device to produce AC power to run various electrical items such as lights, televisions, kitchen appliances, and power tools. Use in power generation systems such as electric utility companies or solar.

Power inverter. generating systems to convert DC power to AC power. Use within any larger electronic system where an engineering need exists for deriving an AC source from a DC source. Frequency conversion - if a user in (say) a 50 Hz country needs a 60 Hz supply to power equipment that is frequency-specific, such as a small motor or some electronics, it is possible to convert the frequency by running an inverter with a 60 Hz output from a DC source such as a 12V power supply running from the 50 Hz mains.## Circuit description.## Basic design.In one simple inverter circuit,.

Power inverter. DC power is connected to a transformer through the center tap of the primary winding. A relay switch is rapidly switched back and forth to allow current to flow back to the DC source following two alternate paths through one end of the primary winding and then the other. The alternation of the direction of current in the primary winding of the transformer produces alternating current (AC) in the secondary circuit.The electromechanical version of the switching device includes two stationary contacts and a spring supported moving contact. The spring holds the movable contact against one of the stationary contacts and.

Power inverter. provide large power handling capability in a semiconductor device, and can readily be controlled over a variable firing range.The switch in the simple inverter described above, when not coupled to an output transformer, produces a square voltage waveform due to its simple off and on nature as opposed to the sinusoidal waveform that is the usual waveform of an AC power supply. Using Fourier analysis, periodic waveforms are represented as the sum of an infinite series of sine waves. The sine wave that has the same frequency as the original waveform is called the fundamental component. The other sine waves,.

Power inverter. car that is moving can turn into a source of energy and can, with the right inverter topology (full H-bridge) charge the car battery when decelerating or braking. In a similar manner, the right topology (full H-bridge) can invert the roles of "source" and "load", that is, if for example the voltage is higher on the AC "load" side (by adding a solar inverter, similar to a gen-set, but solid state), energy can flow back into the DC "source" or battery.Based on the basic H-bridge topology, there are two different fundamental control strategies called basic frequency-variable bridge converter and PWM.

Power inverter. control. Here, in the left image of H-bridge circuit, the top left switch is named as "S1", and others are named as "S2, S3, S4" in counterclockwise order.For the basic frequency-variable bridge converter, the switches can be operated at the same frequency as the AC in the electric grid. However, it is the rate at which the switches open and close that determines the AC frequency. When S1 and S4 are on and the other two are off, the load is provided with positive voltage and vice versa. We could control the on-off states of the switches to adjust the.

Power inverter. AC magnitude and phase. We could also control the switches to eliminate certain harmonics. This includes controlling the switches to create notches, or 0-state regions, in the output waveform or adding the outputs of two or more converters in parallel that are phase shifted in respect to one another.Another method that can be used is PWM. Unlike the basic frequency-variable bridge converter, in the PWM controlling strategy, only two switches S3, S4 can operate at the frequency of the AC side or at any low frequency. The other two would switch much faster (typically 100 KHz) to create square voltages.

Power inverter. level of distortion caused by harmonics. The waveform quality of AC produced directly by H-bridge mentioned above would be not as good as we want.The issue of waveform quality can be addressed in many ways. Capacitors and inductors can be used to filter the waveform. If the design includes a transformer, filtering can be applied to the primary or the secondary side of the transformer or to both sides. Low-pass filters are applied to allow the fundamental component of the waveform to pass to the output while limiting the passage of the harmonic components. If the inverter is designed to.

Power inverter. provide power at a fixed frequency, a resonant filter can be used. For an adjustable frequency inverter, the filter must be tuned to a frequency that is above the maximum fundamental frequency.Since most loads contain inductance, feedback rectifiers or antiparallel diodes are often connected across each semiconductor switch to provide a path for the peak inductive load current when the switch is turned off. The antiparallel diodes are somewhat similar to the "freewheeling diodes" used in AC/DC converter circuits.Fourier analysis reveals that a waveform, like a square wave, that is anti-symmetrical about the 180 degree point contains only odd harmonics,.

Power inverter. simplifies the electronics, but the inductors and capacitors tend to be large and heavy. Its high efficiency makes this approach popular in large uninterruptible power supplies in data centers that run the inverter continuously in an "online" mode to avoid any switchover transient when power is lost.A closely related approach uses a ferroresonant transformer, also known as a constant voltage transformer, to remove harmonics and to store enough energy to sustain the load for a few AC cycles. This property makes them useful in standby power supplies to eliminate the switchover transient that otherwise occurs during a power failure while.

Power inverter. size and volume. In 2014, Google together with IEEE started an open competition named Little Box Challenge, with a prize money of $1,000,000, to build a (much) smaller power inverter.## History.## Early inverters.From the late nineteenth century through the middle of the twentieth century, DC-to-AC power conversion was accomplished using rotary converters or motor-generator sets (M-G sets). In the early twentieth century, vacuum tubes and gas-filled tubes began to be used as switches in inverter circuits. The most widely used type of tube was the thyratron.The origins of electromechanical inverters explain the source of the term "inverter". Early AC-to-DC converters.

Power inverter. used an induction or synchronous AC motor direct-connected to a generator (dynamo) so that the generator's commutator reversed its connections at exactly the right moments to produce DC. A later development is the synchronous converter, in which the motor and generator windings are combined into one armature, with slip rings at one end and a commutator at the other and only one field frame. The result with either is AC-in, DC-out. With an M-G set, the DC can be considered to be separately generated from the AC; with a synchronous converter, in a certain sense it can be considered to.

Power inverter. be "mechanically rectified AC". Given the right auxiliary and control equipment, an M-G set or rotary converter can be "run backwards", converting DC to AC. Hence an inverter is an inverted converter.## Controlled rectifier inverters.Since early transistors were not available with sufficient voltage and current ratings for most inverter applications, it was the 1957 introduction of the thyristor or silicon-controlled rectifier (SCR) that initiated the transition to solid state inverter circuits.The "commutation" requirements of SCRs are a key consideration in SCR circuit designs. SCRs do not turn off or "commutate" automatically when the gate control signal is shut off. They.

Power inverter. only turn off when the forward current is reduced to below the minimum holding current, which varies with each kind of SCR, through some external process. For SCRs connected to an AC power source, commutation occurs naturally every time the polarity of the source voltage reverses. SCRs connected to a DC power source usually require a means of forced commutation that forces the current to zero when commutation is required. The least complicated SCR circuits employ natural commutation rather than forced commutation. With the addition of forced commutation circuits, SCRs have been used in the types of inverter circuits described.

Power inverter. above.In applications where inverters transfer power from a DC power source to an AC power source, it is possible to use AC-to-DC controlled rectifier circuits operating in the inversion mode. In the inversion mode, a controlled rectifier circuit operates as a line commutated inverter. This type of operation can be used in HVDC power transmission systems and in regenerative braking operation of motor control systems.Another type of SCR inverter circuit is the current source input (CSI) inverter. A CSI inverter is the dual of a six-step voltage source inverter. With a current source inverter, the DC power supply is configured.

Power inverter. as a current source rather than a voltage source. The inverter SCRs are switched in a six-step sequence to direct the current to a three-phase AC load as a stepped current waveform. CSI inverter commutation methods include load commutation and parallel capacitor commutation. With both methods, the input current regulation assists the commutation. With load commutation, the load is a synchronous motor operated at a leading power factor.As they have become available in higher voltage and current ratings, semiconductors such as transistors or IGBTs that can be turned off by means of control signals have become the preferred switching components.

Power inverter. for use in inverter circuits.## Rectifier and inverter pulse numbers.Rectifier circuits are often classified by the number of current pulses that flow to the DC side of the rectifier per cycle of AC input voltage. A single-phase half-wave rectifier is a one-pulse circuit and a single-phase full-wave rectifier is a two-pulse circuit. A three-phase half-wave rectifier is a three-pulse circuit and a three-phase full-wave rectifier is a six-pulse circuit.With three-phase rectifiers, two or more rectifiers are sometimes connected in series or parallel to obtain higher voltage or current ratings. The rectifier inputs are supplied from special transformers that provide phase.

Power inverter. shifted outputs. This has the effect of phase multiplication. Six phases are obtained from two transformers, twelve phases from three transformers and so on. The associated rectifier circuits are 12-pulse rectifiers, 18-pulse rectifiers and so on...When controlled rectifier circuits are operated in the inversion mode, they would be classified by pulse number also. Rectifier circuits that have a higher pulse number have reduced harmonic content in the AC input current and reduced ripple in the DC output voltage. In the inversion mode, circuits that have a higher pulse number have lower harmonic content in the AC output voltage waveform.## Other.