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Robert Of Ketton
Robert of Ketton, known in Latin as Rodbertus Ketenensis ( 1141–1157), was an English astronomer, translator, priest and diplomat active in Spain. He translated several works of Arabic into Latin, including the first translation of the Quran into any Western language. Between 1144 and 1157 he held an archdeaconry in the diocese of Pamplona. In the past he has been confounded with Robert of Chester (Latin ''Robertus Castrensis''), another English translator active in Spain in the mid-twelfth century; and at least one modern scholar believes they are the same person.Charles Burnett, "Ketton, Robert of (''fl''. 1141–1157)", ''Oxford Dictionary of National Biography'' (Oxford University Press, 2004). Robert's byname, ''Ketenensis'' or on one occasion ''de Ketene'', is usually taken to refer to Ketton, a village in Rutland, a few miles from Stamford, Lincolnshire. It was probably Robert's birthplace. This nickname was never used in official documents associated with Pamplona, w ...
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Arabic
Arabic (, , or , ) is a Central Semitic languages, Central Semitic language of the Afroasiatic languages, Afroasiatic language family spoken primarily in the Arab world. The International Organization for Standardization (ISO) assigns language codes to 32 varieties of Arabic, including its standard form of Literary Arabic, known as Modern Standard Arabic, which is derived from Classical Arabic. This distinction exists primarily among Western linguists; Arabic speakers themselves generally do not distinguish between Modern Standard Arabic and Classical Arabic, but rather refer to both as ( "the eloquent Arabic") or simply ' (). Arabic is the List of languages by the number of countries in which they are recognized as an official language, third most widespread official language after English and French, one of six official languages of the United Nations, and the Sacred language, liturgical language of Islam. Arabic is widely taught in schools and universities around the wo ...
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Al-Kindi
Abū Yūsuf Yaʻqūb ibn ʼIsḥāq aṣ-Ṣabbāḥ al-Kindī (; ; ; ) was an Arab Muslim polymath active as a philosopher, mathematician, physician, and music theorist Music theory is the study of theoretical frameworks for understanding the practices and possibilities of music. '' The Oxford Companion to Music'' describes three interrelated uses of the term "music theory": The first is the " rudiments", that .... Al-Kindi was the first of the Early Islamic philosophy, Islamic peripatetic philosophers, and is hailed as the "father of Arab philosophy". Al-Kindi was born in Kufa and educated in Baghdad. He became a prominent figure in the House of Wisdom, and a number of Abbasid Caliphs appointed him to oversee the translation of Ancient Greece, Greek scientific and philosophical texts into the Arabic language. This contact with "the philosophy of the ancients" (as Hellenistic philosophy was often referred to by Muslim scholars) had a profound effect on him, as he synthes ...
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Toledan Collection
The ''Corpus Cluniacense'' or ''Corpus Islamolatinum'', sometimes erroneously the ''Corpus Toledanum'', is a collection of Latin writings about Islam compiled in 1142–1143. At its centre are translations from Arabic of five Islamic works, including the Qurʾān. The corpus was commissioned by Abbot Peter the Venerable of Cluny during a trip to Spain. The team of translators was led by Robert of Ketton, who translated the Qurʾān. The other translators were Herman of Carinthia, Peter of Toledo and a Muslim named Muḥammad. They were assisted in their Latin by Peter of Poitiers. The ''Corpus'' comprises: #a brief introduction #''Summa totius haeresis ac diabolice secte Sarracenorum'' ('Sum of all the Heresies and Diabolical Sect of the Saracens'), a summary that Peter of Poitiers composed of Peter the Venerable's ''Liber contra sectam siue haeresim Sarracenorum'' #''Epistula domini Petri abbatis ad dominum Bernardum Clare Uallis abbatem'', the letter of Peter the Venerable a ...
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Logroño
Logroño ( , , ) is the capital of the autonomous community of La Rioja (Spain), La Rioja, Spain. Located in the north of the Iberian Peninsula, primarily in the right (South) bank of the Ebro River, Logroño has historically been a place of passage, such as the Camino de Santiago. Its borders were disputed between the Iberian kingdoms of Crown of Castile, Castille, Kingdom of Navarre, Navarre and Crown of Aragon, Aragon during the Middle Ages. The population of the city in 2021 was 150,808 while the metropolitan area included nearly 200,000 inhabitants. The city is a centre of trade of Rioja wine, for which the area is noted, and manufacturing of wood, metal and textile products. Etymology Origin of the name The origin of this toponym is, as for many other places, unknown. The name ''Lucronio'' was first used in a document from 965 where García Sánchez I of Pamplona donated the place so named to the Monasteries of San Millán de la Cogolla, Monastery of San Millán. In ...
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Ebro
The Ebro (Spanish and Basque ; , , ) is a river of the north and northeast of the Iberian Peninsula, in Spain. It rises in Cantabria and flows , almost entirely in an east-southeast direction. It flows into the Mediterranean Sea, forming a delta in the Terres de l'Ebre region, in southern Catalonia. In the Iberian peninsula, it ranks second in length after the Tagus and second in discharge volume, and drainage basin, after the Douro. It is the longest river entirely within Spain; the other two mentioned flow into Portugal. The Ebro flows through many cities (): Reinosa in Cantabria; Frías and Miranda de Ebro in Castile and León; Haro, Logroño, Calahorra, and Alfaro in La Rioja; Tudela in Navarre; Alagón, Utebo, and Zaragoza in Aragon; and Flix, Móra d'Ebre, Benifallet, Tivenys, Xerta, Aldover, Tortosa, and Amposta in the province of Tarragona (Catalonia). Geography Upper part and tributaries The source of the river Ebro is in the Cantabrian Moun ...
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Al-Battani
Al-Battani (before 858929), archaically Latinized as Albategnius, was a Muslim astronomer, astrologer, geographer and mathematician, who lived and worked for most of his life at Raqqa, now in Syria. He is considered to be the greatest and most famous of the astronomers of the medieval Islamic world. Al-Battānī's writings became instrumental in the development of science and astronomy in the west. His (), is the earliest extant (astronomical table) made in the Ptolemaic tradition that is hardly influenced by Hindu or Sasanian astronomy. Al-Battānī refined and corrected Ptolemy's ''Almagest'', but also included new ideas and astronomical tables of his own. A handwritten Latin version by the Italian astronomer Plato Tiburtinus was produced between 1134 and 1138, through which medieval astronomers became familiar with al-Battānī. In 1537, a Latin translation of the was printed in Nuremberg. An annotated version, also in Latin, published in three separate volumes betwee ...
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Planisphere
In astronomy, a planisphere () is a star chart analog computing instrument in the form of two adjustable disks that rotate on a common pivot. It can be adjusted to display the visible stars for any time and date. It is an instrument to assist in learning how to recognize stars and constellations. The astrolabe, an instrument that has its origins in Hellenistic astronomy, is a predecessor of the modern planisphere. The term ''planisphere'' contrasts with '' armillary sphere'', where the celestial sphere is represented by a three-dimensional framework of rings. Description A planisphere consists of a circular star chart attached at its center to an opaque circular overlay that has a clear window or hole so that only a portion of the sky map will be visible in the window or hole area at any given time. The chart and overlay are mounted so that they are free to rotate about a common axis. The star chart contains the brightest stars, constellations and (possibly) deep-sky objects ...
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Adelard Of Bath
Adelard of Bath (; 1080? 1142–1152?) was a 12th-century English natural philosopher. He is known both for his original works and for translating many important Greek scientific works of astrology, astronomy, philosophy, alchemy and mathematics into Latin from Arabic versions, which were then introduced to Western Europe. The oldest surviving Latin translation of Euclid's ''Elements'' is a 12th-century translation by Adelard from an Arabic version. He is known as one of the first to introduce the Arabic numeral system to Europe. He stands at the convergence of three intellectual schools: the traditional learning of French schools, the Greek culture of Magna Graecia, Southern Italy, and the Arabic science of the East. Background Adelard's biography was incomplete in places, and leaves some aspects open to interpretation. Consequently, much of what is ascribed to Adelard is a product of his own testimony. Adelard claims to come from the Roman English city of Bath, Somerset, ...
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Almagest
The ''Almagest'' ( ) is a 2nd-century Greek mathematics, mathematical and Greek astronomy, astronomical treatise on the apparent motions of the stars and planetary paths, written by Ptolemy, Claudius Ptolemy ( ) in Koine Greek. One of the most influential scientific texts in history, it canonized a geocentric model of the Universe that was accepted for more than 1,200 years from its origin in Hellenistic Roman-era Alexandria, Alexandria, in the medieval Byzantine and Islamic Golden Age, Islamic worlds, and in Western Europe through the Middle Ages and early Renaissance until Copernicus. It is also a key source of information about ancient Greek astronomy. Ptolemy set up a public inscription at Canopus, Egypt, in 147 or 148. Norman T. Hamilton found that the version of Ptolemy's models set out in the ''Canopic Inscription'' was earlier than the version in the ''Almagest''. Hence the ''Almagest'' could not have been completed before about 150, a quarter-century after Ptolemy began ...
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Claudius Ptolemy
Claudius Ptolemy (; , ; ; – 160s/170s AD) was a Greco-Roman mathematician, astronomer, astrologer, geographer, and music theorist who wrote about a dozen scientific treatises, three of which were important to later Byzantine, Islamic, and Western European science. The first was his astronomical treatise now known as the '' Almagest'', originally entitled ' (, ', ). The second is the ''Geography'', which is a thorough discussion on maps and the geographic knowledge of the Greco-Roman world. The third is the astrological treatise in which he attempted to adapt horoscopic astrology to the Aristotelian natural philosophy of his day. This is sometimes known as the ' (, 'On the Effects') but more commonly known as the ' (from the Koine Greek meaning 'four books'; ). The Catholic Church promoted his work, which included the only mathematically sound geocentric model of the Solar System, and unlike most Greek mathematicians, Ptolemy's writings (foremost the ''Almagest'') never ...
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Theodosius' Spherics
The ''Spherics'' (Ancient Greek, Greek: , ) is a three-volume treatise on spherical geometry written by the Greek mathematics, Hellenistic mathematician Theodosius of Bithynia in the 2nd or 1st century BC. Book I and the first half of Book II establish basic geometric constructions needed for spherical geometry using the tools of Euclidean geometry, Euclidean solid geometry, while the second half of Book II and Book III contain propositions relevant to astronomy as modeled by the celestial sphere. Primarily consisting of theorems which were known at least informally a couple centuries earlier, the ''Spherics'' was a foundational treatise for geometers and astronomers from its origin until the 19th century. It was continuously studied and copied in Greek manuscript for more than a millennium. It was translated into Arabic in the 9th century during the Islamic Golden Age, and thence translated into Neo Latin, Latin Latin translations of the 12th century, in 12th century Iberia, tho ...
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Theodosius Of Bithynia
Theodosius of Bithynia ( ; 2nd–1st century BC) was a Hellenistic astronomer and mathematician from Bithynia who wrote the '' Spherics'', a treatise about spherical geometry, as well as several other books on mathematics and astronomy, of which two survive, ''On Habitations'' and ''On Days and Nights''. Life Little is known about Theodosius' life. The ''Suda'' (10th-century Byzantine encyclopedia) mentioned him writing a commentary on Archimedes' ''Method'' (late 3rd century BC), and Strabo's ''Geographica'' mentioned mathematicians Hipparchus ( – ) and "Theodosius and his sons" as among the residents of Bithynia distinguished for their learning. Vitruvius (1st century BC) mentioned a sundial invented by Theodosius. Thus Theodosius lived sometime after Archimedes and before Vitruvius, likely contemporaneously with or after Hipparchus, probably sometime between 200 and 50 BC. Historically he was called Theodosius of Tripolis due to a confusing paragraph in the ''Suda'' which prob ...
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