A cowbell (or cow bell ) is a bell worn around the neck of free-roaming livestock so herders can keep track of an animal via the sound of the bell when the animal is grazing out of view in hilly landscapes or vast plains. Although they are typically referred to as "cow bells" due to their extensive use with cattle , the bells are used on a wide variety of animals.
120-435: The bell and clapper are commonly crafted from iron , bronze , brass , copper , or wood . The collar used to hold the bell is traditionally made with leather and wood fibers. The craftsmanship of cow bells varies by geographic location and culture. Most cow bells are made of thin, flat pieces of plated sheet metal . Plating causes the sheet metal to have a surface which can be decorated or left plain. The ornaments on
240-434: A body-centered cubic (bcc) crystal structure . As it cools further to 1394 °C, it changes to its γ-iron allotrope, a face-centered cubic (fcc) crystal structure, or austenite . At 912 °C and below, the crystal structure again becomes the bcc α-iron allotrope. The physical properties of iron at very high pressures and temperatures have also been studied extensively, because of their relevance to theories about
360-430: A nuclear spin (− 1 ⁄ 2 ). The nuclide Fe theoretically can undergo double electron capture to Cr, but the process has never been observed and only a lower limit on the half-life of 4.4×10 years has been established. Fe is an extinct radionuclide of long half-life (2.6 million years). It is not found on Earth, but its ultimate decay product is its granddaughter, the stable nuclide Ni . Much of
480-499: A supernova for their formation, involving rapid neutron capture by starting Fe nuclei. In the far future of the universe, assuming that proton decay does not occur, cold fusion occurring via quantum tunnelling would cause the light nuclei in ordinary matter to fuse into Fe nuclei. Fission and alpha-particle emission would then make heavy nuclei decay into iron, converting all stellar-mass objects to cold spheres of pure iron. Iron's abundance in rocky planets like Earth
600-507: A bell over three days caused cows to spend less time feeding, ruminating, and lying down. Animal rights campaigners, including the German Animal Welfare Society, have called for a ban on using cow bells. Iron Iron is a chemical element ; it has the symbol Fe (from Latin ferrum 'iron') and atomic number 26. It is a metal that belongs to the first transition series and group 8 of
720-423: A common medieval form of apprenticeship for boys into knighthood or prestige appointments. The countess was married to Lionel of Antwerp, 1st Duke of Clarence , the second surviving son of the king, Edward III , and the position brought the teenage Chaucer into the close court circle, where he was to remain for the rest of his life. He also worked as a courtier, a diplomat, and a civil servant, as well as working for
840-537: A copy in his library among other works of Chaucer), with G. K. Chesterton writing, "among the great canonical English authors, Chaucer and Dickens have the most in common." The large number of surviving manuscripts of Chaucer's works is testimony to the enduring interest in his poetry prior to the arrival of the printing press. There are 83 surviving manuscripts of the Canterbury Tales (in whole or part) alone, along with sixteen of Troilus and Criseyde , including
960-591: A deep violet complex: Chaucer This is an accepted version of this page Geoffrey Chaucer ( / ˈ tʃ ɔː s ər / CHAW -sər ; c. 1343 – 25 October 1400) was an English poet, author, and civil servant best known for The Canterbury Tales . He has been called the "father of English literature", or, alternatively, the "father of English poetry". He was the first writer to be buried in what has since come to be called Poets' Corner , in Westminster Abbey . Chaucer also gained fame as
1080-495: A deposition in the case of Scrope v. Grosvenor . There is no further reference after this date to Philippa, Chaucer's wife. She is presumed to have died in 1387. He survived the political upheavals caused by the Lords Appellants , despite the fact that Chaucer knew some of the men executed over the affair quite well. On 12 July 1389, Chaucer was appointed the clerk of the king's works , a sort of foreman organising most of
1200-454: A distorted sodium chloride structure. The binary ferrous and ferric halides are well-known. The ferrous halides typically arise from treating iron metal with the corresponding hydrohalic acid to give the corresponding hydrated salts. Iron reacts with fluorine, chlorine, and bromine to give the corresponding ferric halides, ferric chloride being the most common. Ferric iodide is an exception, being thermodynamically unstable due to
1320-584: A general historical trend towards the creation of a vernacular literature , after the example of Dante , in many parts of Europe. A parallel trend in Chaucer's lifetime was underway in Scotland through the work of his slightly earlier contemporary, John Barbour . Barbour's work was likely to have been even more general, as is evidenced by the example of the Pearl Poet in the north of England. Although Chaucer's language
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#17331051122651440-433: A lease on a residence within the close of Westminster Abbey on 24 December 1399. Henry IV renewed the grants assigned by Richard, but The Complaint of Chaucer to his Purse hints that the grants might not have been paid. The last mention of Chaucer is on 5 June 1400, when some debts owed to him were repaid. Chaucer died of unknown causes on 25 October 1400, although the only evidence for this date comes from
1560-553: A macroscopic piece of iron will have a nearly zero overall magnetic field. Application of an external magnetic field causes the domains that are magnetized in the same general direction to grow at the expense of adjacent ones that point in other directions, reinforcing the external field. This effect is exploited in devices that need to channel magnetic fields to fulfill design function, such as electrical transformers , magnetic recording heads, and electric motors . Impurities, lattice defects , or grain and particle boundaries can "pin"
1680-511: A member of the royal court of Edward III as a valet de chambre , yeoman , or esquire on 20 June 1367, a position which could entail a wide variety of tasks. His wife also received a pension for court employment. He travelled abroad many times, at least some of them in his role as a valet. In 1368, he may have attended the wedding of Lionel of Antwerp to Violante Visconti , daughter of Galeazzo II Visconti , in Milan . Two other literary stars of
1800-475: A mixture of O 2 /Ar. Iron(IV) is a common intermediate in many biochemical oxidation reactions. Numerous organoiron compounds contain formal oxidation states of +1, 0, −1, or even −2. The oxidation states and other bonding properties are often assessed using the technique of Mössbauer spectroscopy . Many mixed valence compounds contain both iron(II) and iron(III) centers, such as magnetite and Prussian blue ( Fe 4 (Fe[CN] 6 ) 3 ). The latter
1920-483: A more ornate tomb, making him the first writer interred in the area now known as Poets' Corner . Chaucer was a close friend of John of Gaunt , the wealthy Duke of Lancaster and father of Henry IV, and he served under Lancaster's patronage. Near the end of their lives, Lancaster and Chaucer became brothers-in-law when Lancaster married Katherine Swynford (de Roet) in 1396; she was the sister of Philippa (de) Roet, whom Chaucer had married in 1366. Chaucer's The Book of
2040-662: A noyse gan they make That erthe & eyr & tre & euery lake So ful was that onethe was there space For me to stonde, so ful was al the place. "The language of England, upon which Chaucer was the first to confer celebrity, has amply justified the foresight which led him to disdain all others for its sake, and, in turn, has conferred an enduring celebrity upon him who trusted his reputation to it without reserve." The poet Thomas Hoccleve , who may have met Chaucer and considered him his role model, hailed Chaucer as "the firste fyndere of our fair langage". John Lydgate referred to Chaucer within his own text The Fall of Princes as
2160-522: A philosopher and astronomer , composing the scientific A Treatise on the Astrolabe for his 10-year-old son, Lewis. He maintained a career in the civil service as a bureaucrat , courtier , diplomat, and member of parliament. Among Chaucer's many other works are The Book of the Duchess , The House of Fame , The Legend of Good Women , and Troilus and Criseyde . He is seen as crucial in legitimising
2280-471: A result, mercury is traded in standardized 76 pound flasks (34 kg) made of iron. Iron is by far the most reactive element in its group; it is pyrophoric when finely divided and dissolves easily in dilute acids, giving Fe . However, it does not react with concentrated nitric acid and other oxidizing acids due to the formation of an impervious oxide layer, which can nevertheless react with hydrochloric acid . High-purity iron, called electrolytic iron ,
2400-570: A style which had developed in English literature since around the 12th century as an alternative to the alliterative Anglo-Saxon metre . Chaucer is known for metrical innovation, inventing the rhyme royal , and he was one of the first English poets to use the five-stress line, a decasyllabic cousin to the iambic pentametre , in his work, with only a few anonymous short works using it before him. The arrangement of these five-stress lines into rhyming couplets , first seen in his The Legend of Good Women ,
2520-680: A tenant farmer in Agmondesham ( Amersham in Buckinghamshire ), was brought before John Chadworth , the Bishop of Lincoln , on charges of being a Lollard heretic; he confessed to owning a "boke of the Tales of Caunterburie" among other suspect volumes. The first English printer, William Caxton, was responsible for the first two folio editions of The Canterbury Tales published in 1478 and 1483. Caxton's second printing, by his own account, came about because
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#17331051122652640-455: A type of rock consisting of repeated thin layers of iron oxides alternating with bands of iron-poor shale and chert . The banded iron formations were laid down in the time between 3,700 million years ago and 1,800 million years ago . Materials containing finely ground iron(III) oxides or oxide-hydroxides, such as ochre , have been used as yellow, red, and brown pigments since pre-historical times. They contribute as well to
2760-435: A very large coordination and organometallic chemistry : indeed, it was the discovery of an iron compound, ferrocene , that revolutionalized the latter field in the 1950s. Iron is sometimes considered as a prototype for the entire block of transition metals, due to its abundance and the immense role it has played in the technological progress of humanity. Its 26 electrons are arranged in the configuration [Ar]3d 4s , of which
2880-401: Is a reference to Lancaster (also called "Loncastel" and "Longcastell"), "walles white" is thought to be an oblique reference to Blanche, "Seynt Johan" was John of Gaunt's name-saint, and "ryche hil" is a reference to Richmond. These references reveal the identity of the grieving black knight of the poem as John of Gaunt, Duke of Lancaster and Earl of Richmond. "White" is the English translation of
3000-630: Is also rarely found in basalts that have formed from magmas that have come into contact with carbon-rich sedimentary rocks, which have reduced the oxygen fugacity sufficiently for iron to crystallize. This is known as telluric iron and is described from a few localities, such as Disko Island in West Greenland, Yakutia in Russia and Bühl in Germany. Ferropericlase (Mg,Fe)O , a solid solution of periclase (MgO) and wüstite (FeO), makes up about 20% of
3120-419: Is attested by the many poets who imitated or responded to his writing. John Lydgate was one of the earliest poets to write continuations of Chaucer's unfinished Tales . At the same time Robert Henryson 's Testament of Cresseid completes the story of Cressida left unfinished in his Troilus and Criseyde . Many of the manuscripts of Chaucer's works contain material from these poets, and later appreciations by
3240-459: Is believed that he started The Canterbury Tales in the 1380s. Chaucer also translated Boethius ' Consolation of Philosophy and The Romance of the Rose by Guillaume de Lorris (extended by Jean de Meun). Eustache Deschamps called himself a "nettle in Chaucer's garden of poetry". In 1385, Thomas Usk made glowing mention of Chaucer, and John Gower also lauded him. Chaucer's Treatise on
3360-419: Is believed to be in Chaucer's Parlement of Foules (1382), a dream vision portraying a parliament for birds to choose their mates. Honouring the first anniversary of the engagement of fifteen-year-old King Richard II of England to fifteen-year-old Anne of Bohemia : For this was on seynt Volantynys day Whan euery bryd comyth there to chese his make Of euery kynde that men thinke may And that so heuge
3480-407: Is considered to be resistant to rust, due to its oxide layer. Iron forms various oxide and hydroxide compounds ; the most common are iron(II,III) oxide (Fe 3 O 4 ), and iron(III) oxide (Fe 2 O 3 ). Iron(II) oxide also exists, though it is unstable at room temperature. Despite their names, they are actually all non-stoichiometric compounds whose compositions may vary. These oxides are
3600-702: Is derived from the French chaucier , once thought to mean 'shoemaker', but now known to mean a maker of hose or leggings . In 1324, his father, John Chaucer, was kidnapped by an aunt in the hope of marrying the 12-year-old to her daughter in an attempt to keep the property in Ipswich. The aunt was imprisoned and fined £250, now equivalent to about £200,000, suggesting that the family was financially secure. John Chaucer married Agnes Copton, who inherited properties in 1349, including 24 shops in London, from her uncle Hamo de Copton, who
3720-525: Is described in a will dated 3 April 1354 and listed in the City Hustings Roll as "moneyer", said to be a moneyer at the Tower of London . In the City Hustings Roll 110, 5, Ric II, dated June 1380, Chaucer refers to himself as me Galfridum Chaucer, filium Johannis Chaucer, Vinetarii, Londonie , which translates as: "I, Geoffrey Chaucer, son of the vintner John Chaucer, London". While records concerning
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3840-495: Is due to its abundant production during the runaway fusion and explosion of type Ia supernovae , which scatters the iron into space. Metallic or native iron is rarely found on the surface of the Earth because it tends to oxidize. However, both the Earth's inner and outer core , which together account for 35% of the mass of the whole Earth, are believed to consist largely of an iron alloy, possibly with nickel . Electric currents in
3960-474: Is experimentally well defined for pressures less than 50 GPa. For greater pressures, published data (as of 2007) still varies by tens of gigapascals and over a thousand kelvin. Below its Curie point of 770 °C (1,420 °F; 1,040 K), α-iron changes from paramagnetic to ferromagnetic : the spins of the two unpaired electrons in each atom generally align with the spins of its neighbors, creating an overall magnetic field . This happens because
4080-490: Is in Earth's crust only amounts to about 5% of the overall mass of the crust and is thus only the fourth most abundant element in that layer (after oxygen , silicon , and aluminium ). Most of the iron in the crust is combined with various other elements to form many iron minerals . An important class is the iron oxide minerals such as hematite (Fe 2 O 3 ), magnetite (Fe 3 O 4 ), and siderite (FeCO 3 ), which are
4200-451: Is much closer to Modern English than the text of Beowulf , such that (unlike that of Beowulf ) a Modern English speaker with an extensive vocabulary of archaic words may understand it, it differs enough that most publications modernise his idiom. The following is a sample from the prologue of The Summoner's Tale that compares Chaucer's text to a modern translation: The first recorded association of Valentine's Day with romantic love
4320-401: Is not like that of Mn with its weak, spin-forbidden d–d bands, because Fe has higher positive charge and is more polarizing, lowering the energy of its ligand-to-metal charge transfer absorptions. Thus, all the above complexes are rather strongly colored, with the single exception of the hexaquo ion – and even that has a spectrum dominated by charge transfer in the near ultraviolet region. On
4440-407: Is possible, but nonetheless the sequence does effectively end at Ni because conditions in stellar interiors cause the competition between photodisintegration and the alpha process to favor photodisintegration around Ni. This Ni, which has a half-life of about 6 days, is created in quantity in these stars, but soon decays by two successive positron emissions within supernova decay products in
4560-548: Is somewhat different). Pieces of magnetite with natural permanent magnetization ( lodestones ) provided the earliest compasses for navigation. Particles of magnetite were extensively used in magnetic recording media such as core memories , magnetic tapes , floppies , and disks , until they were replaced by cobalt -based materials. Iron has four stable isotopes : Fe (5.845% of natural iron), Fe (91.754%), Fe (2.119%) and Fe (0.282%). Twenty-four artificial isotopes have also been created. Of these stable isotopes, only Fe has
4680-442: Is such a strong oxidizing agent that it oxidizes ammonia to nitrogen (N 2 ) and water to oxygen: The pale-violet hex aquo complex [Fe(H 2 O) 6 ] is an acid such that above pH 0 it is fully hydrolyzed: As pH rises above 0 the above yellow hydrolyzed species form and as it rises above 2–3, reddish-brown hydrous iron(III) oxide precipitates out of solution. Although Fe has a d configuration, its absorption spectrum
4800-502: Is supposed to have an orthorhombic or a double hcp structure. (Confusingly, the term "β-iron" is sometimes also used to refer to α-iron above its Curie point, when it changes from being ferromagnetic to paramagnetic, even though its crystal structure has not changed. ) The inner core of the Earth is generally presumed to consist of an iron- nickel alloy with ε (or β) structure. The melting and boiling points of iron, along with its enthalpy of atomization , are lower than those of
4920-418: Is thus very important economically, and iron is the cheapest metal, with a price of a few dollars per kilogram or pound. Pristine and smooth pure iron surfaces are a mirror-like silvery-gray. Iron reacts readily with oxygen and water to produce brown-to-black hydrated iron oxides , commonly known as rust . Unlike the oxides of some other metals that form passivating layers, rust occupies more volume than
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5040-493: Is uncertain how many children Chaucer and Philippa had, but three or four are most commonly cited. His son, Thomas Chaucer , had an illustrious career as chief butler to four kings, envoy to France, and Speaker of the House of Commons . Thomas's daughter, Alice , married the Duke of Suffolk . Thomas's great-grandson (Geoffrey's great-great-grandson), John de la Pole, Earl of Lincoln , was
5160-460: Is uncertain, but he seems to have travelled in France, Spain, and Flanders , possibly as a messenger and perhaps even going on a pilgrimage to Santiago de Compostela . Around 1366, Chaucer married Philippa (de) Roet . She was a lady-in-waiting to Edward III's queen, Philippa of Hainault , and a sister of Katherine Swynford , who later ( c. 1396 ) became the third wife of John of Gaunt . It
5280-451: Is used as the traditional "blue" in blueprints . Iron is the first of the transition metals that cannot reach its group oxidation state of +8, although its heavier congeners ruthenium and osmium can, with ruthenium having more difficulty than osmium. Ruthenium exhibits an aqueous cationic chemistry in its low oxidation states similar to that of iron, but osmium does not, favoring high oxidation states in which it forms anionic complexes. In
5400-437: Is used in chemical actinometry and along with its sodium salt undergoes photoreduction applied in old-style photographic processes. The dihydrate of iron(II) oxalate has a polymeric structure with co-planar oxalate ions bridging between iron centres with the water of crystallisation located forming the caps of each octahedron, as illustrated below. Iron(III) complexes are quite similar to those of chromium (III) with
5520-557: The 2nd millennium BC and the use of iron tools and weapons began to displace copper alloys – in some regions, only around 1200 BC. That event is considered the transition from the Bronze Age to the Iron Age . In the modern world , iron alloys, such as steel , stainless steel , cast iron and special steels , are by far the most common industrial metals, due to their mechanical properties and low cost. The iron and steel industry
5640-610: The Middle English language from a combination of the Kentish and Midlands dialects. This is probably overstated; the influence of the court, chancery and bureaucracy – of which Chaucer was a part – remains a more probable influence on the development of Standard English . Modern English is somewhat distanced from the language of Chaucer's poems owing to the effect of the Great Vowel Shift sometime after his death. This change in
5760-447: The OED lists 1440 as the earliest attestation of a 'bell-wether' . The OED also attributes the phrase "to bear the bell" in the sense "to take the first place" as originally referring to the leading cow or sheep of a drove or flock to Chaucer 's Troilus and Criseyde , 1374. In 15th-century Germany, a cow bell was worn only by the best and leading piece of livestock. The wider distribution of
5880-471: The Romantic era poets were shaped by their failure to distinguish the later "additions" from the original Chaucer. Writers of the 17th and 18th centuries, such as John Dryden , admired Chaucer for his stories but not for his rhythm and rhyme, as few critics could then read Middle English and the text had been butchered by printers, leaving a somewhat unadmirable mess. It was not until the late 19th century that
6000-537: The Yorkshire Dales . An early depiction of a bellwether , the leading sheep of a flock, on whose neck a bell is hung, is in the Carolingian Stuttgart Psalter of the ninth century. In Europe, the earliest written evidence of bells used for livestock dates to the late 14th to early 15th century. Grimm's Deutsches Wörterbuch s.v. "Kuhschelle" points to a 1410 mention in a Frankfurt archive;
6120-470: The fertile crescent to Celtic, Carthaginian, Greek and Roman cultures. The earliest depictions of bells used for livestock in Britain appear on Pictish carved stones of the 7th to 9th centuries AD at Eassie, Angus and Fowlis Wester, Perthshire. Small iron bells of 8th or 9th century date, argued to be for cow or sheep, have been excavated from upland farm settlements at Crummack Dale and Gauber High Pasture in
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#17331051122656240-563: The periodic table . It is, by mass, the most common element on Earth , forming much of Earth's outer and inner core . It is the fourth most abundant element in the Earth's crust , being mainly deposited by meteorites in its metallic state. Extracting usable metal from iron ores requires kilns or furnaces capable of reaching 1,500 °C (2,730 °F), about 500 °C (932 °F) higher than that required to smelt copper . Humans started to master that process in Eurasia during
6360-534: The pronunciation of English, still not fully understood, makes the reading of Chaucer difficult for the modern audience. The status of the final -e in Chaucer's verse is uncertain: it seems likely that during the period of Chaucer's writing, the final -e was dropping out of colloquial English and that its use was somewhat irregular. It may have been a vestige of the Old English dative singular suffix -e attached to most nouns. Chaucer's versification suggests that
6480-432: The supernova remnant gas cloud, first to radioactive Co, and then to stable Fe. As such, iron is the most abundant element in the core of red giants , and is the most abundant metal in iron meteorites and in the dense metal cores of planets such as Earth . It is also very common in the universe, relative to other stable metals of approximately the same atomic weight . Iron is the sixth most abundant element in
6600-488: The trans - chlorohydridobis(bis-1,2-(diphenylphosphino)ethane)iron(II) complex is used as a starting material for compounds with the Fe( dppe ) 2 moiety . The ferrioxalate ion with three oxalate ligands displays helical chirality with its two non-superposable geometries labelled Λ (lambda) for the left-handed screw axis and Δ (delta) for the right-handed screw axis, in line with IUPAC conventions. Potassium ferrioxalate
6720-466: The universe , and the most common refractory element. Although a further tiny energy gain could be extracted by synthesizing Ni , which has a marginally higher binding energy than Fe, conditions in stars are unsuitable for this process. Element production in supernovas greatly favor iron over nickel, and in any case, Fe still has a lower mass per nucleon than Ni due to its higher fraction of lighter protons. Hence, elements heavier than iron require
6840-512: The "lodesterre (guiding principle) … off our language". Around two centuries later, Sir Philip Sidney greatly praised Troilus and Criseyde in his own Defence of Poesie . During the nineteenth and early twentieth century, Chaucer came to be viewed as a symbol of the nation's poetic heritage. In Charles Dickens ' 1850 novel David Copperfield , the Victorian era author echoed Chaucer's use of Luke 23:34 from Troilus and Criseyde (Dickens held
6960-570: The 3d and 4s electrons are relatively close in energy, and thus a number of electrons can be ionized. Iron forms compounds mainly in the oxidation states +2 ( iron(II) , "ferrous") and +3 ( iron(III) , "ferric"). Iron also occurs in higher oxidation states , e.g., the purple potassium ferrate (K 2 FeO 4 ), which contains iron in its +6 oxidation state. The anion [FeO 4 ] with iron in its +7 oxidation state, along with an iron(V)-peroxo isomer, has been detected by infrared spectroscopy at 4 K after cocondensation of laser-ablated Fe atoms with
7080-591: The 3rd millennium BC in Neolithic China . During this era, there is evidence of early forms of pottery cowbells, which were likely used to track goats, sheep, and cattle. The pottery bells were later replaced by metal bells. In West Asia, the first bells appeared in 1000 BC. The earliest metal bells, one found in the Taosi site, and four in the Erlitou site, are dated to about 2000 BC. Bells for shepherding were expanded from
7200-572: The Astrolabe describes the form and use of the astrolabe in detail and is sometimes cited as the first example of technical writing in the English language. It indicates that Chaucer was versed in science in addition to his literary talents. The equatorie of the planetis is a scientific work similar to the Treatise and sometimes ascribed to Chaucer because of its language and handwriting, an identification which scholars no longer deem tenable. Chaucer wrote in continental accentual-syllabic metre ,
7320-537: The Bevin Brothers Manufacturing Company continues to make cow bell bells in East Hampton, CT, as it has since its founding in 1832; it is the only remaining U.S. company making just bells. In Western Europe, when the snow has melted in the spring, villages send the cows to the high alpine meadows to graze. This event, called Alpaufzug , is celebrated in each village with a procession through
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#17331051122657440-554: The Duchess (also known as the Deeth of Blaunche the Duchesse ) was written to commemorate Blanche of Lancaster, John of Gaunt's first wife. The poem refers to John and Blanche in allegory as the narrator relates the tale of "A long castel with walles white/Be Seynt Johan, on a ryche hil" (1318–1319) who is mourning grievously after the death of his love, "And goode faire White she het/That was my lady name ryght" (948–949). The phrase "long castel"
7560-589: The Earth's surface. Items made of cold-worked meteoritic iron have been found in various archaeological sites dating from a time when iron smelting had not yet been developed; and the Inuit in Greenland have been reported to use iron from the Cape York meteorite for tools and hunting weapons. About 1 in 20 meteorites consist of the unique iron-nickel minerals taenite (35–80% iron) and kamacite (90–95% iron). Native iron
7680-598: The French word "blanche", implying that the white lady was Blanche of Lancaster. Chaucer's short poem Fortune , believed to have been written in the 1390s, is also thought to refer to Lancaster. "Chaucer as narrator" openly defies Fortune , proclaiming that he has learned who his enemies are through her tyranny and deceit, and declares "my suffisaunce" (15) and that "over himself hath the maystrye" (14). Fortune , in turn, does not understand Chaucer's harsh words to her for she believes that she has been kind to him, claims that he does not know what she has in store for him in
7800-501: The Trychel. As opposed to regular cast-metal bells, 'trychlen' are made of hammered sheet metal. This results in a clanking, less crisp sound, but at the same time results in a bell that is lighter and thus easier to carry. Modern-day manufacturing of cow bells continues today in Korea, Indonesia, and India, many created as village handicrafts. Despite a May 2012 fire that destroyed its factory,
7920-609: The Visconti and Sir John Hawkwood , English condottiere (mercenary leader) in Milan. It has been speculated that it was Hawkwood on whom Chaucer based his character, the Knight, in the Canterbury Tales , for a description matches that of a 14th-century condottiere. A possible indication that his career as a writer was appreciated came when Edward III granted Chaucer "a gallon of wine daily for
8040-488: The bell worn by livestock was a gradual process of the Early Modern period . In France in the mid-16th century, Francois Rabelais makes this practice explicit in his Gargantua and Pantagruel , stating that such was the custom, to appear on the field wearing jingling garment, as the high priest wears when entering the sacristy; since the tournaments, that is, the contest of nobility, have been abolished, carters have taken
8160-518: The bells and hung them on their hacks. The importance of the cow bell is highlighted in Swiss folklore , which reflects a period when a great Trychel, or large cow bell, was a rare and much-coveted item. The legend of the Simmental tells how a young cowherd strays inside a mountain, and is offered by a beautiful woman the choice between a treasure of gold coins, a golden Trychel, or the fairy herself. He chooses
8280-450: The brown deposits present in a sizeable number of streams. Due to its electronic structure, iron has a very large coordination and organometallic chemistry. Many coordination compounds of iron are known. A typical six-coordinate anion is hexachloroferrate(III), [FeCl 6 ] , found in the mixed salt tetrakis(methylammonium) hexachloroferrate(III) chloride . Complexes with multiple bidentate ligands have geometric isomers . For example,
8400-683: The color of various rocks and clays , including entire geological formations like the Painted Hills in Oregon and the Buntsandstein ("colored sandstone", British Bunter ). Through Eisensandstein (a jurassic 'iron sandstone', e.g. from Donzdorf in Germany) and Bath stone in the UK, iron compounds are responsible for the yellowish color of many historical buildings and sculptures. The proverbial red color of
8520-408: The commissioners of peace for Kent at a time when French invasion was a possibility. He is thought to have started work on The Canterbury Tales in the early 1380s. He also became a member of parliament for Kent in 1386 and attended the ' Wonderful Parliament ' that year. He appears to have been present at most of the 71 days it sat, for which he was paid £24 9s. On 15 October that year, he gave
8640-464: The cores of the Earth and other planets. Above approximately 10 GPa and temperatures of a few hundred kelvin or less, α-iron changes into another hexagonal close-packed (hcp) structure, which is also known as ε-iron . The higher-temperature γ-phase also changes into ε-iron, but does so at higher pressure. Some controversial experimental evidence exists for a stable β phase at pressures above 50 GPa and temperatures of at least 1500 K. It
8760-1215: The cow bell and the collar are usually decorative although some cultures believe that certain ornaments provide or enhance magical protections such as the power to prevent or cure fever and other illnesses. Different bells can have specific sounds to identify important characteristics of the animals, such as age, sex, and species. Some cultures have even developed names to differentiate between bells and their tones; for example, in Spanish , "truco" refers to stud males, "esquila" to female goats or ewes, and "esquileta" for pregnant females and immature animals. Each of these bells possess unique sounds, shapes, and sizes. Bells are used to keep track of grazing animal herds such as goats , reindeer , sheep and cows . They are mainly used in Europe , Mediterranean areas and Latin America , but are also used worldwide by those who practice transhumance , including nomadic pastoral tribes in Africa and Asia . Some people put bells on their livestock because they believe
8880-401: The domains in the new positions, so that the effect persists even after the external field is removed – thus turning the iron object into a (permanent) magnet . Similar behavior is exhibited by some iron compounds, such as the ferrites including the mineral magnetite , a crystalline form of the mixed iron(II,III) oxide Fe 3 O 4 (although the atomic-scale mechanism, ferrimagnetism ,
9000-403: The dukes of Lancaster, York , and Gloucester , and a portion of line 76 ("as three of you or tweyne") is thought to refer to the ordinance of 1390 which specified that no royal gift could be authorised without the consent of at least two of the three dukes. Most conspicuous in this short poem is the number of references to Chaucer's "beste frend". Fortune states three times in her response to
9120-479: The earlier 3d elements from scandium to chromium , showing the lessened contribution of the 3d electrons to metallic bonding as they are attracted more and more into the inert core by the nucleus; however, they are higher than the values for the previous element manganese because that element has a half-filled 3d sub-shell and consequently its d-electrons are not easily delocalized. This same trend appears for ruthenium but not osmium . The melting point of iron
9240-567: The early 1340s (by some accounts, including his monument, he was born in 1343), though the precise date and location remain unknown. The Chaucer family offers an extraordinary example of upward mobility. His great-grandfather was a tavern keeper, his grandfather worked as a purveyor of wines, and his father, John Chaucer, rose to become an important wine merchant with a royal appointment. Several previous generations of Geoffrey Chaucer's family had been vintners and merchants in Ipswich . His family name
9360-515: The engraving on his tomb, which was erected more than 100 years after his death. There is some speculation that he was murdered by enemies of Richard II or even on the orders of his successor Henry IV, but the case is entirely circumstantial. Chaucer was buried in Westminster Abbey in London, as was his right owing to his status as a tenant of the Abbey's close. In 1556, his remains were transferred to
9480-565: The era were in attendance: Jean Froissart and Petrarch . Around this time, Chaucer is believed to have written The Book of the Duchess in honour of Blanche of Lancaster , the late wife of John of Gaunt, who died in 1369 of the plague. Chaucer travelled to Picardy the next year as part of a military expedition; in 1373, he visited Genoa and Florence . Numerous scholars such as Skeat, Boitani, and Rowland suggested that, on this Italian trip, he came into contact with Petrarch or Boccaccio . They introduced him to medieval Italian poetry ,
9600-406: The exception of iron(III)'s preference for O -donor instead of N -donor ligands. The latter tend to be rather more unstable than iron(II) complexes and often dissociate in water. Many Fe–O complexes show intense colors and are used as tests for phenols or enols . For example, in the ferric chloride test , used to determine the presence of phenols, iron(III) chloride reacts with a phenol to form
9720-533: The final -e is sometimes to be vocalised and sometimes to be silent; however, this remains a point on which there is disagreement. Most scholars pronounce it as a schwa when it is vocalised. Besides the irregular spelling, much of the vocabulary is recognisable to the modern reader. Chaucer is also recorded in the Oxford English Dictionary as the first author to use many common English words in his writings. These words were probably frequently used in
9840-482: The foreign sound of the bell scares off predators, however, some studies have shown that the sound of the bell has the opposite effect and leads predators to livestock because predators develop a learned association between the sound of the bell and the presence of a prey animal. Cowbells are often rung by human spectators at Alpine skiing events, and also, particularly in the US, at cyclo-cross races. They are usually held in
9960-565: The forms and stories of which he would use later. The purposes of a voyage in 1377 are mysterious, as details within the historical record conflict. Later documents suggest it was a mission, along with Jean Froissart, to arrange a marriage between the future King Richard II and a French princess, thereby ending the Hundred Years' War. If this was the purpose of their trip, they seem to have been unsuccessful, as no wedding occurred. In 1378, Richard II sent Chaucer as an envoy (secret dispatch) to
10080-464: The future, but most importantly, "And eek thou hast thy beste frend alyve" (32, 40, 48). Chaucer retorts, "My frend maystow nat reven, blind goddesse" (50) and orders her to take away those who merely pretend to be his friends. Fortune turns her attention to three princes whom she implores to relieve Chaucer of his pain and "Preyeth his beste frend of his noblesse/That to som beter estat he may atteyne" (78–79). The three princes are believed to represent
10200-462: The global stock of iron in use in society is 2,200 kg per capita. More-developed countries differ in this respect from less-developed countries (7,000–14,000 vs 2,000 kg per capita). Ocean science demonstrated the role of the iron in the ancient seas in both marine biota and climate. Iron shows the characteristic chemical properties of the transition metals , namely the ability to form variable oxidation states differing by steps of one and
10320-432: The hand rather than worn around the neck. In the 1960s, Earl W. Terrell and Ralph L. Reeves welded handles onto cowbells at Mississippi State University for students. Today that has led to 60,000 cowbells ringing around Mississippi State Bulldog Athletics. Mississippi State now holds the world record for most cowbells ringing simultaneously. Archaeological evidence of bells dates back to more than 5000 years ago, from
10440-471: The heir to the throne designated by Richard III before he was deposed. Geoffrey's other children probably included Elizabeth Chaucy, a nun at Barking Abbey , Agnes, an attendant at Henry IV 's coronation; and another son, Lewis Chaucer. Chaucer's "Treatise on the Astrolabe" was written for Lewis. According to tradition, Chaucer studied law in the Inner Temple (an Inn of Court ) at this time. He became
10560-585: The high meadow. The best cows (each referred to as a 'Kranzkuh' , "crown[ed] cow", after the ornamental headwear with which it is adorned) from each herd again lead the procession. The traditional festival is called Viehscheid in Southern Germany, and has other names in the Alpine regions. Cow bells can be as loud as 113 decibels, and it has been suggested that this may cause pain or deafness in animals wearing them. A study published in 2015 found that wearing
10680-591: The king from 1389 to 1391 as Clerk of the King's Works. In 1359, in the early stages of the Hundred Years' War , Edward III invaded France, and Chaucer travelled with Lionel of Antwerp, Elizabeth's husband, as part of the English army . In 1360, he was captured during the siege of Rheims . Edward paid £16 for his ransom, a considerable sum equivalent to £14,557 in 2023, and Chaucer was released. After this, Chaucer's life
10800-468: The king's building projects. No major works were begun during his tenure, but he did conduct repairs on Westminster Palace , St. George's Chapel, Windsor , continued building the wharf at the Tower of London and built the stands for a tournament held in 1390. It may have been a difficult job, but it paid two shillings a day, more than three times his salary as a comptroller. Chaucer was also appointed keeper of
10920-417: The language at the time, but Chaucer was the earliest extant manuscript source with his ear for common speech. Acceptable , alkali , altercation , amble , angrily , annex , annoyance , approaching , arbitration , armless , army , arrogant , arsenic , arc , artillery and aspect are just some of almost two thousand English words first attested in Chaucer. Widespread knowledge of Chaucer's works
11040-449: The liquid outer core are believed to be the origin of the Earth's magnetic field . The other terrestrial planets ( Mercury , Venus , and Mars ) as well as the Moon are believed to have a metallic core consisting mostly of iron. The M-type asteroids are also believed to be partly or mostly made of metallic iron alloy. The rare iron meteorites are the main form of natural metallic iron on
11160-417: The liquid stipend until Richard II came to power, after which it was converted to a monetary grant on 18 April 1378. Chaucer obtained the very substantial job of comptroller of the customs for the port of London, which he began on 8 June 1374. He must have been suited for the role as he continued in it for twelve years, a long time in such a post at that time. His life goes undocumented for much of
11280-582: The literary use of Middle English when the dominant literary languages in England were still Anglo-Norman French and Latin . Chaucer's contemporary Thomas Hoccleve hailed him as " the firste fyndere of our fair langage " (i.e., the first one capable of finding poetic matter in English). Almost two thousand English words are first attested to in Chaucerian manuscripts. Chaucer was born in London, most likely in
11400-446: The literature, this mineral phase of the lower mantle is also often called magnesiowüstite. Silicate perovskite may form up to 93% of the lower mantle, and the magnesium iron form, (Mg,Fe)SiO 3 , is considered to be the most abundant mineral in the Earth, making up 38% of its volume. While iron is the most abundant element on Earth, most of this iron is concentrated in the inner and outer cores. The fraction of iron that
11520-554: The lives of his contemporaries William Langland and the Gawain Poet are practically non-existent, since Chaucer was a public servant, his official life is very well documented, with nearly five hundred written items testifying to his career. The first of the "Chaucer Life Records" appears in 1357, in the household accounts of Elizabeth de Burgh , the Countess of Ulster , when he became the noblewoman's page through his father's connections,
11640-578: The lodge at the King's Park in Feckenham Forest in Worcestershire , which was a largely honorary appointment. In September 1390, records say that Chaucer was robbed and possibly injured while conducting the business, and he stopped working in this capacity on 17 June 1391. He began as Deputy Forester in the royal forest of Petherton Park in North Petherton , Somerset on 22 June. This
11760-407: The major ores of iron . Many igneous rocks also contain the sulfide minerals pyrrhotite and pentlandite . During weathering , iron tends to leach from sulfide deposits as the sulfate and from silicate deposits as the bicarbonate. Both of these are oxidized in aqueous solution and precipitate in even mildly elevated pH as iron(III) oxide . Large deposits of iron are banded iron formations ,
11880-775: The metal and thus flakes off, exposing more fresh surfaces for corrosion. Chemically, the most common oxidation states of iron are iron(II) and iron(III) . Iron shares many properties of other transition metals, including the other group 8 elements , ruthenium and osmium . Iron forms compounds in a wide range of oxidation states , −4 to +7. Iron also forms many coordination compounds ; some of them, such as ferrocene , ferrioxalate , and Prussian blue have substantial industrial, medical, or research applications. The body of an adult human contains about 4 grams (0.005% body weight) of iron, mostly in hemoglobin and myoglobin . These two proteins play essential roles in oxygen transport by blood and oxygen storage in muscles . To maintain
12000-606: The meteorites Semarkona and Chervony Kut, a correlation between the concentration of Ni, the granddaughter of Fe, and the abundance of the stable iron isotopes provided evidence for the existence of Fe at the time of formation of the Solar System . Possibly the energy released by the decay of Fe, along with that released by Al , contributed to the remelting and differentiation of asteroids after their formation 4.6 billion years ago. The abundance of Ni present in extraterrestrial material may bring further insight into
12120-559: The necessary levels, human iron metabolism requires a minimum of iron in the diet. Iron is also the metal at the active site of many important redox enzymes dealing with cellular respiration and oxidation and reduction in plants and animals. At least four allotropes of iron (differing atom arrangements in the solid) are known, conventionally denoted α , γ , δ , and ε . The first three forms are observed at ordinary pressures. As molten iron cools past its freezing point of 1538 °C, it crystallizes into its δ allotrope, which has
12240-542: The next ten years, but it is believed that he wrote (or began) most of his famous works during this period. Chaucer's "only surviving handwriting" dates from this period. This is a request for temporary leave from work presented to King Richard II, hitherto believed to be the work of one of his subordinates due to the low level of language. On 16 October 1379, Thomas Staundon filed a legal action against his former servant Cecily Chaumpaigne and Chaucer, accusing Chaucer of unlawfully employing Chaumpaigne before her term of service
12360-415: The official Chaucerian canon, accepted today, was decided upon, largely as a result of Walter William Skeat 's work. Roughly seventy-five years after Chaucer's death, The Canterbury Tales was selected by William Caxton as one of the first books to be printed in England. Chaucer is sometimes considered the source of the English vernacular tradition. His achievement for the language can be seen as part of
12480-436: The orbitals of those two electrons (d z and d x − y ) do not point toward neighboring atoms in the lattice, and therefore are not involved in metallic bonding. In the absence of an external source of magnetic field, the atoms get spontaneously partitioned into magnetic domains , about 10 micrometers across, such that the atoms in each domain have parallel spins, but some domains have other orientations. Thus
12600-533: The origin and early history of the Solar System . The most abundant iron isotope Fe is of particular interest to nuclear scientists because it represents the most common endpoint of nucleosynthesis . Since Ni (14 alpha particles ) is easily produced from lighter nuclei in the alpha process in nuclear reactions in supernovae (see silicon burning process ), it is the endpoint of fusion chains inside extremely massive stars . Although adding more alpha particles
12720-444: The other hand, the pale green iron(II) hexaquo ion [Fe(H 2 O) 6 ] does not undergo appreciable hydrolysis. Carbon dioxide is not evolved when carbonate anions are added, which instead results in white iron(II) carbonate being precipitated out. In excess carbon dioxide this forms the slightly soluble bicarbonate, which occurs commonly in groundwater, but it oxidises quickly in air to form iron(III) oxide that accounts for
12840-581: The oxidizing power of Fe and the high reducing power of I : Ferric iodide, a black solid, is not stable in ordinary conditions, but can be prepared through the reaction of iron pentacarbonyl with iodine and carbon monoxide in the presence of hexane and light at the temperature of −20 °C, with oxygen and water excluded. Complexes of ferric iodide with some soft bases are known to be stable compounds. The standard reduction potentials in acidic aqueous solution for some common iron ions are given below: The red-purple tetrahedral ferrate (VI) anion
12960-497: The past work on isotopic composition of iron has focused on the nucleosynthesis of Fe through studies of meteorites and ore formation. In the last decade, advances in mass spectrometry have allowed the detection and quantification of minute, naturally occurring variations in the ratios of the stable isotopes of iron. Much of this work is driven by the Earth and planetary science communities, although applications to biological and industrial systems are emerging. In phases of
13080-647: The personal copy of Henry IV. Given the ravages of time, it is likely that these surviving manuscripts represent hundreds since lost. Chaucer's original audience was a courtly one and would have included women as well as men of the upper social classes. Yet even before his death in 1400, Chaucer's audience had begun to include members of the rising literate, middle and merchant classes. This included many Lollard sympathisers who may well have been inclined to read Chaucer as one of their own. Lollards were particularly attracted to Chaucer's satirical writings about friars, priests, and other church officials. In 1464, John Baron,
13200-631: The plaintiff, "And also, you still have your best friend alive" (32, 40, 48); she also refers to his "beste frend" in the envoy when appealing to his "noblesse" to help Chaucer to a higher estate. The narrator makes a fifth reference when he rails at Fortune that she shall not take his friend from him. Chaucer respected and admired Christians and was one himself, as he wrote in Canterbury Tales , "now I beg all those that listen to this little treatise, or read it, that if there be anything in it that pleases them, they thank our Lord Jesus Christ for it, from whom proceeds all understanding and goodness.", though he
13320-414: The principal ores for the production of iron (see bloomery and blast furnace). They are also used in the production of ferrites , useful magnetic storage media in computers, and pigments. The best known sulfide is iron pyrite (FeS 2 ), also known as fool's gold owing to its golden luster. It is not an iron(IV) compound, but is actually an iron(II) polysulfide containing Fe and S 2 ions in
13440-453: The rest of his life" for some unspecified task. This was an unusual grant, but given on a day of celebration, St George's Day , 1374, when artistic endeavours were traditionally rewarded, it is assumed to have been for another early poetic work. It is not known which, if any, of Chaucer's extant works prompted the reward, but the suggestion of him as a poet to a king places him as a precursor to later poets laureate . Chaucer continued to collect
13560-437: The second half of the 3d transition series, vertical similarities down the groups compete with the horizontal similarities of iron with its neighbors cobalt and nickel in the periodic table, which are also ferromagnetic at room temperature and share similar chemistry. As such, iron, cobalt, and nickel are sometimes grouped together as the iron triad . Unlike many other metals, iron does not form amalgams with mercury . As
13680-547: The surface of Mars is derived from an iron oxide-rich regolith . Significant amounts of iron occur in the iron sulfide mineral pyrite (FeS 2 ), but it is difficult to extract iron from it and it is therefore not exploited. In fact, iron is so common that production generally focuses only on ores with very high quantities of it. According to the International Resource Panel 's Metal Stocks in Society report ,
13800-403: The village to the high pastures. The cows are decorated with floral wreaths woven through the horns. The best milk-producing cow in the village leads the procession and wears the largest bell. The bells are made in various sizes, and are awarded to the cows according to their milk production that year. In the fall, the event is repeated, but is called an "Alpabzug" , as the animals return from
13920-455: The volume of the lower mantle of the Earth, which makes it the second most abundant mineral phase in that region after silicate perovskite (Mg,Fe)SiO 3 ; it also is the major host for iron in the lower mantle. At the bottom of the transition zone of the mantle, the reaction γ- (Mg,Fe) 2 [SiO 4 ] ↔ (Mg,Fe)[SiO 3 ] + (Mg,Fe)O transforms γ-olivine into a mixture of silicate perovskite and ferropericlase and vice versa. In
14040-506: Was aware that as in any place some people in the church were venal and corrupt. Chaucer's first major work was The Book of the Duchess , an elegy for Blanche of Lancaster, who died in 1368. Two other early works were Anelida and Arcite and The House of Fame . He wrote many of his major works in a prolific period when he worked as customs comptroller for London (1374 to 1386). His Parlement of Foules , The Legend of Good Women , and Troilus and Criseyde all date from this time. It
14160-741: Was completed, which violated the Statute of Labourers . Though eight court documents dated between October 1379 and July 1380 survive the action, the case was never prosecuted. No details survive about Chaumpaigne's service or how she came to leave Staundon's employ for Chaucer's. It is not known if Chaucer was in the City of London at the time of the Peasants' Revolt , but if he was, he would have seen its leaders pass almost directly under his apartment window at Aldgate . While still working as comptroller, Chaucer appears to have moved to Kent , being appointed as one of
14280-407: Was no sinecure, with maintenance an essential part of the job, although there were many opportunities to derive profit. Richard II granted him an annual pension of 20 pounds in 1394 (equivalent to £22,034 in 2023), and Chaucer's name fades from the historical record not long after Richard's overthrow in 1399. The last few records of his life show his pension renewed by the new king and his taking
14400-513: Was used in much of his later work and became one of the standard poetic forms in English. His early influence as a satirist is also important, with the common humorous device, the funny accent of a regional dialect , apparently making its first appearance in The Reeve's Tale . The poetry of Chaucer, along with other writers of the era, is credited with helping to standardise the London Dialect of
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