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Ibn As-Saffar
Abu al‐Qasim Ahmad ibn Abd Allah ibn Umar al‐Ghafiqī ibn as-Saffar al‐Andalusi (born in Cordoba, died in the year 1035 at Denia), also known as Ibn as-Saffar (, literally: son of the brass worker), was a Spanish-Arab astronomer in Al-Andalus. He worked at the school founded by his colleague Al-Majriti in Córdoba. His best-known work was a treatise on the astrolabe, a text that was in active use until the 15th century and influenced the work of Kepler. He also wrote a commentary on the ''Zij as-Sindhind'', and measured the coordinates of Mecca. Ibn as-Saffar later influenced the works of Abu as-Salt. Paul Kunitzsch argued that a Latin treatise on the astrolabe long attributed to Mashallah, and used by Chaucer to write ''A Treatise on the Astrolabe'', is in fact written by Ibn as-Saffar. The exoplanet Saffar, also known as Upsilon Andromedae b, is named in his honor. Saffar Island in Antarctica Antarctica () is Earth's southernmost and least-populated contine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Córdoba, Spain
Córdoba ( ; ), or sometimes Cordova ( ), is a city in Andalusia, Spain, and the capital of the Province of Córdoba (Spain), province of Córdoba. It is the third most populated Municipalities in Spain, municipality in Andalusia. The city primarily lies on the right bank of the Guadalquivir in the south of the Iberian Peninsula. Once a Colonia (Roman), Roman colonia, it was taken over by the Visigothic Kingdom followed by the Muslim conquest of the Iberian Peninsula, Muslim conquest in the eighth century. Córdoba became the capital of the Umayyad state of Córdoba, Emirate and then Caliphate of Córdoba, from which the Umayyad dynasty ruled all of al-Andalus until 1031. Under Umayyad rule, Córdoba was transformed into a centre of education and learning, and by the 10th century it had grown to be the second-largest city in Europe. The caliphate experienced a manifold political crisis in the early 11th century that brought about state collapse. Following the Siege of Córdoba ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
A Treatise On The Astrolabe
''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. Significance The ''Treatise'' is considered the "oldest work in English written upon an elaborate scientific instrument". It is admired for its clarity in explaining difficult concepts – although modern readers lacking an actual astrolabe may find the details of the astrolabe difficult to understand. Robinson believes that it indicates that had Chaucer written more freely composed prose it would have been superior to his translations of Boethius and Renaut de Louhans. Chaucer’s exact source is undetermined but most of his ‘conclusions’ go back, directly or indirectly, to ''Compositio et Operatio Astrolabii'', a Latin translation of Messahala ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientists Who Worked On Qibla Determination
A scientist is a person who researches to advance knowledge in an area of the natural sciences. In classical antiquity, there was no real ancient analog of a modern scientist. Instead, philosophers engaged in the philosophical study of nature called natural philosophy, a precursor of natural science. Though Thales ( 624–545 BC) was arguably the first scientist for describing how cosmic events may be seen as natural, not necessarily caused by gods,Frank N. Magill''The Ancient World: Dictionary of World Biography'', Volume 1 Routledge, 2003 it was not until the 19th century that the term ''scientist'' came into regular use after it was coined by the theologian, philosopher, and historian of science William Whewell in 1833. History The roles of "scientists", and their predecessors before the emergence of modern scientific disciplines, have evolved considerably over time. Scientists of different eras (and before them, natural philosophers, mathematicians, natur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomers From Al-Andalus
An astronomer is a scientist in the field of astronomy who focuses on a specific question or field outside the scope of Earth. Astronomers observe astronomical objects, such as stars, planets, moons, comets and galaxies – in either observational (by analyzing the data) or theoretical astronomy. Examples of topics or fields astronomers study include planetary science, solar astronomy, the origin or evolution of stars, or the formation of galaxies. A related but distinct subject is physical cosmology, which studies the Universe as a whole. Types Astronomers typically fall under either of two main types: observational and theoretical. Observational astronomers make direct observations of celestial objects and analyze the data. In contrast, theoretical astronomers create and investigate models of things that cannot be observed. Because it takes millions to billions of years for a system of stars or a galaxy to complete a life cycle, astronomers must observe snapshots of diff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
11th-century People From Al-Andalus
The 11th century is the period from 1001 (represented by the Roman numerals MI) through 1100 (MC) in accordance with the Julian calendar, and the 1st century of the 2nd millennium. In the history of Europe, this period is considered the early part of the High Middle Ages. There was, after a brief ascendancy, a sudden decline of Byzantine power and a rise of Norman domination over much of Europe, along with the prominent role in Europe of notably influential popes. Christendom experienced a formal schism in this century which had been developing over previous centuries between the Latin West and Byzantine East, causing a split in its two largest denominations to this day: Roman Catholicism and Eastern Orthodoxy. In Song dynasty China and the classical Islamic world, this century marked the high point for both classical Chinese civilization, science and technology, and classical Islamic science, philosophy, technology and literature. Rival political factions at the Song dynast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1035 Deaths
Year 1035 ( MXXXV) was a common year starting on Wednesday of the Julian calendar. Events By place Europe * March 23 – Battle of Cesar (near the village of Cesar, Portugal): The armies of Bermudo III, King of León, defeat the Moorish armies of Abu'l-Qasim, the emir of the Taifa of Seville. * c. July 3 – 8-year-old William I becomes duke of Normandy after his father Robert I ("the Magnificent") dies on a pilgrimage at Nicaea (modern Turkey). Robert's death leads to a period of instability in Normandy, as William is too young to take his father's place. The Norman nobles in the region take the opportunity to settle old feuds and to increase their private wealth. * October 16 – Conrad II grants the right to hold the first Freimarkt festival in Bremen. The city increases her trade with Norway, and the northern Netherlands. * October 18 – King Sancho III of Pamplona dies and divides his dominions among his four sons, García Sánchez III, Gon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctica
Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean (also known as the Antarctic Ocean), it contains the geographic South Pole. Antarctica is the fifth-largest continent, being about 40% larger than Europe, and has an area of . Most of Antarctica is covered by the Antarctic ice sheet, with an average thickness of . Antarctica is, on average, the coldest, driest, and windiest of the continents, and it has the highest average elevation. It is mainly a polar desert, with annual Climate of Antarctica#Precipitation, precipitation of over along the coast and far less inland. About 70% of the world's freshwater reserves are frozen in Antarctica, which, if melted, would raise global sea levels by almost . Antarctica holds the record for the Lowest temperature recorded on Earth, lowest measured temperature on Earth, . The coastal regions can reach temperatures over in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saffar Island
Saffar Island (, ) is the rocky island off the north coast of Elephant Island in the South Shetland Islands, Antarctica extending 290 m in west–east direction and 230 m in south–north direction, with a surface area of 3.64 ha. It is separated from Elephant Island by a passage narrowing to 325 m at points. The feature is named after Abū al-Qāsim Ahmad ibn as-Saffār (d. 1035), an Andalusī astronomer and author of one of the Arabic treatises on the astrolabe that introduced the triangulation method to Europe; in association with other names in the area deriving from the early development or use of geodetic instruments and methods. Location Saffar Island is centred at ,Bulgarian Antarctic Gazetteer. Antarctic Place-names Commission which is 22.36 km east-southeast of [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upsilon Andromedae B
Upsilon Andromedae b (υ Andromedae b, abbreviated Upsilon And b, υ And b), formally named Saffar , is an extrasolar planet approximately 44 light-years away from the Sun in the constellation of Andromeda (constellation), Andromeda. The planet orbits its host star, the F-type main-sequence star Upsilon Andromedae A, approximately every five days. Discovered in June 1996 by Geoffrey Marcy and R. Paul Butler, it was one of the first hot Jupiters to be discovered. It is also one of the first non-resolved planets to be detected directly. Upsilon Andromedae b is the innermost-known planet in its planetary system. In July 2014 the International Astronomical Union launched NameExoWorlds, a process for giving proper names to certain exoplanets and their host stars. The process involved public nomination and voting for the new names. In December 2015, the IAU announced the winning name was Saffar for this planet. The winning name was submitted by the Vega Astronomy Club of Morocco and hon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exoplanet
An exoplanet or extrasolar planet is a planet outside the Solar System. The first confirmed detection of an exoplanet was in 1992 around a pulsar, and the first detection around a main-sequence star was in 1995. A different planet, first detected in 1988, was confirmed in 2003. In 2016, it was recognized that the first possible evidence of an exoplanet had been noted in 1917. In collaboration with ground-based and other space-based observatories the James Webb Space Telescope (JWST) is expected to give more insight into exoplanet traits, such as their composition, environmental conditions, and potential for life. There are many methods of detecting exoplanets. Transit photometry and Doppler spectroscopy have found the most, but these methods suffer from a clear observational bias favoring the detection of planets near the star; thus, 85% of the exoplanets detected are inside the tidal locking zone. In several cases, multiple planets have been observed around a star ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chaucer
Geoffrey Chaucer ( ; – 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 a philosopher and astronomer, composing the scientific '' A Treatise on the Astrolabe'' for his 10-year-old son, Lewis. He maintained a career in public service as a bureaucrat, courtier, diplomat, and member of parliament, having been elected as shire knight for Kent. Among Chaucer's many other works are '' The Book of the Duchess'', ''The House of Fame'', '' The Legend of Good Women'', ''Troilus and Criseyde'', and '' Parlement of Foules''. He is seen as crucial in legitimising the literary use of Middle English when the dominant literary languages in England were still Anglo-Norman French and Latin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
