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An astrolabe is an astronomical instrument dating to ancient times. It serves as a star chart and physical model of visible heavenly bodies. Its various functions also make it an elaborate inclinometer and an analog calculation device capable of working out several kinds of problems in astronomy. In its simplest form it is a metal disc with a pattern of wires, cutouts, and perforations that allows a user to calculate astronomical positions precisely. It is able to measure the altitude above the horizon of a celestial body, day or night; it can be used to identify stars or planets, to determine local latitude given local time, to survey, or to triangulate. It was used in classical antiquity, the Islamic Golden Age, the European Middle Ages and the Age of Discovery for all these purposes.
Hugh Capet was the King of the Franks from 987 to 996. He is the founder of and first king from the House of Capet. The son of the powerful duke Hugh the Great and his wife Hedwige of Saxony, he was elected as the successor of the last Carolingian king, Louis V. Hugh was descended from Charlemagne's son Pepin of Italy through his mother and paternal grandmother, respectively, and was also a nephew of Otto the Great.
The 5th arrondissement of Paris is one of the 20 arrondissements of the capital city of France. In spoken French, this arrondissement is referred to as le cinquième.
The Carolingian Renaissance was the first of three medieval renaissances, a period of cultural activity in the Carolingian Empire. Charlemagne's reign led to an intellectual revival beginning in the 8th century and continuing throughout the 9th century, taking inspiration from ancient Roman and Greek culture and the Christian Roman Empire of the fourth century. During this period, there was an increase of literature, writing, visual arts, architecture, music, jurisprudence, liturgical reforms, and scriptural studies. Carolingian schools were effective centers of education, and they served generations of scholars by producing editions and copies of the classics, both Christian and pagan.
The Kingdom of the Franks, also known as the Frankish Kingdom, the Frankish Empire or Francia, was the largest post-Roman barbarian kingdom in Western Europe. It was ruled by the Frankish Merovingian and Carolingian dynasties during the Early Middle Ages. Francia was among the last surviving Germanic kingdoms from the Migration Period era.
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.
Guillaume Postel was a French linguist, Orientalist, astronomer, Christian Kabbalist, diplomat, polyglot, professor, religious universalist, and writer.
A Treatise on the Astrolabe is a medieval instruction manual on the astrolabe by Geoffrey Chaucer. It was completed in 1391. It describes both the form and the proper use of the instrument, and stands out as a prose technical work from a writer better known for poetry, written in English rather than the more typical Latin.
The Royal Frankish Annals, also called the Annales Laurissenses maiores, are a series of annals composed in Latin in the Carolingian Francia, recording year-by-year the state of the monarchy from 741 to 829. Their authorship is unknown, though Wilhelm von Giesebrecht suggested that Arno of Salzburg was the author of an early section surviving in the copy at Lorsch Abbey. The Annals are believed to have been composed in successive sections by different authors, and then compiled.
French art consists of the visual and plastic arts originating from the geographical area of France. Modern France was the main centre for the European art of the Upper Paleolithic, then left many megalithic monuments, and in the Iron Age many of the most impressive finds of early Celtic art. The Gallo-Roman period left a distinctive provincial style of sculpture, and the region around the modern Franco-German border led the empire in the mass production of finely decorated Ancient Roman pottery, which was exported to Italy and elsewhere on a large scale. With Merovingian art the story of French styles as a distinct and influential element in the wider development of the art of Christian Europe begins.
In medieval historiography, West Francia or the Kingdom of the West Franks constitutes the initial stage of the Kingdom of France and extends from the year 843, from the Treaty of Verdun, to 987, the beginning of the Capetian dynasty. It was created from the division of the Carolingian Empire following the death of Louis the Pious, with its neighbor East Francia eventually evolving into the Kingdom of Germany.
Tala Hadid is a film director and producer. She is also a photographer. Her work has been shown at the Museum of Modern Art in New York City, The Walker Arts Center in Minneapolis, The Smithsonian National Museum, The National Museum of Women in the Arts in Washington D.C., L'Institut du Monde Arabe in Paris and other locations.
A quadrant is an instrument used to measure angles up to 90°. Different versions of this instrument could be used to calculate various readings, such as longitude, latitude, and time of day. Its earliest recorded usage was in ancient India in Rigvedic times by Rishi Atri to observe a solar eclipse. It was then proposed by Ptolemy as a better kind of astrolabe. Several different variations of the instrument were later produced by medieval Muslim astronomers. Mural quadrants were important astronomical instruments in 18th-century European observatories, establishing a use for positional astronomy.
Astronomical rings, also known as Gemma's rings, are an early astronomical instrument. The instrument consists of three rings, representing the celestial equator, declination, and the meridian.
Raqqāda is the site of the second capital of the 9th-century dynasty of Aghlabids, located about ten kilometers southwest of Kairouan, Tunisia. The site now houses the National Museum of Islamic Art.
The Astrarium of Giovanni Dondi dall'Orologio was a complex astronomical clock built between 1348 and 1364 in Padova, Italy, by the doctor and clock-maker Giovanni Dondi dall'Orologio. The Astrarium had seven faces and 107 moving parts; it showed the positions of the sun, the moon and the five planets then known, as well as religious feast days. It was one of the first mechanical clocks to be built in Europe.
Arabic miniatures are small paintings on paper, usually book or manuscript illustrations but also sometimes separate artworks that occupy entire pages. The earliest example dates from around 690 AD, with a flourishing of the art from between 1000 and 1200 AD in the Abbasid caliphate. The art form went through several stages of evolution while witnessing the fall and rise of several Islamic caliphates. Arab miniaturists absorbed Chinese and Persian influences brought by the Mongol destructions, and at last, got totally assimilated and subsequently disappeared due to the Ottoman occupation of the Arab world. Nearly all forms of Islamic miniatures owe their existences to Arabic miniatures, as Arab patrons were the first to demand the production of illuminated manuscripts in the Caliphate, it wasn't until the 14th century that the artistic skill reached the non-Arab regions of the Caliphate.
The Equatorie of the Planetis is a 14th-century scientific work which describes the construction and use of an equatorium. It was first studied in the early 1950s by Derek J. Price, and was formerly attributed to Geoffrey Chaucer. However, in 2014 it was shown to be written in the hand of the St Albans monk John Westwyk. It is largely written in Middle English, with some additions in Latin. It is accompanied by extensive astronomical tables, with Latin headings and annotations.
The Corpus Inscriptionum Semiticarum is a collection of ancient inscriptions in Semitic languages produced since the end of 2nd millennium BC until the rise of Islam. It was published in Latin. In a note recovered after his death, Ernest Renan stated that: "Of all I have done, it is the Corpus I like the most."
The Excerpta Latina Barbari, also called the Chronographia Scaligeriana, is a late antique historical compilation, originally composed in Greek in AD 527–539 but surviving only in a Latin translation from the late 8th century. The identities of the author/compiler of the original and of the translator unknown.