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Abu Ja'far Ibn Habash
Abu Ja'far ibn Habash was a Persian astronomer. He was most likely a son of Habash al-Hasib. Since his father died after 864 AD at the age of 100, it can be concluded that he was active in 3rd century AH (9th century AD). According to Ibn Nadim and Qifti, he wrote a book on astrolabe An astrolabe (; ; ) is an astronomy, astronomical list of astronomical instruments, instrument dating to ancient times. It serves as a star chart and Model#Physical model, physical model of the visible celestial sphere, half-dome of the sky. It ..., named ''al-ostorlab al-mosatah''. References 9th-century Iranian astronomers Astronomers of the medieval Islamic world {{astronomer-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Persian People
Persians ( ), or the Persian people (), are an Iranian peoples, Iranian ethnic group from West Asia that came from an earlier group called the Proto-Iranians, which likely split from the Indo-Iranians in 1800 BCE from either Afghanistan or Central Asia. They are indigenous to the Iranian plateau and comprise the majority of the population of Iran.Iran Census Results 2016 United Nations Alongside having a Culture of Iran, common cultural system, they are native speakers of the Persian language and of the Western Iranian languages that are closely related to it. In the Western world, "Persian" was largely understood as a demonym for all Iranians rather than as an ethnonym for the Persian people, but this understanding Name of Iran, shi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habash Al-Hasib
Ahmad ibn 'Abdallah al-Marwazi, known as Habash al-Hasib (, died 869) was a Persian astronomer, geographer, and mathematician from Merv in Khorasan, who discovered the trigonometric ratios tangent, and cotangent. Al-Biruni who cited Habash in his work, expanded his astronomical tables. Habash al-Hasib flourished in Baghdad, and died a centenarian some time between 864 and 874 possibly in Abbasid Samarra. The title "Habash" (Abbyssian) may refer to dark skin color. He worked under two Abbasid caliphs, al-Ma'mun and al-Mu'tasim. Habash al-Hasib developed a trigonometric algorithm to solve problems related to parallax, which was later rediscovered by Johannes Kepler in 1609 and it is now known as Kepler's equation. Habash is the father of the astronomer Abu Ja'far ibn Habash. Work Habash Hasib made astronomical observations from 825 to 835, and compiled three ''zijes'' (astronomical tables): the first were still in the Hindu manner; the second, called the "tested" tables, were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ibn Nadim
Abū al-Faraj Muḥammad ibn Isḥāq an-Nadīm (), also Ibn Abī Yaʿqūb Isḥāq ibn Muḥammad ibn Isḥāq al-Warrāq, and commonly known by the '' nasab'' (patronymic) Ibn an-Nadīm (; died 17 September 995 or 998), was an important Muslim bibliographer and biographer of Baghdad who compiled the encyclopedia '' Kitāb al-Fihrist'' (''The Book Catalogue''). Biography Much known of an-Nadim is deduced from his epithets. 'an-Nadim' (), 'the Court Companion' and 'al-Warrāq () 'the copyist of manuscripts'. Probably born in Baghdad ca. 320/932 he died there on Wednesday, 20th of Shaʿban A.H. 385. He was a Persian or perhaps an Arab. Little is known about Ibn an-Nadīm's life. Some historians say that he was of Persian descent , but this is not certain. However, the choice of the rarely used Persian word pehrest (fehrest/fehres/fahrasat) meaning "The List" as the title for a handbook on Arabic literature is noteworthy in this context. From age six, he may have attended a ''mad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Al-Qifti
Jamāl al-Dīn Abū al-Ḥasan 'Alī ibn Yūsuf ibn Ibrāhīm ibn 'Abd al-Wahid al-Shaybānī (), called al-Qifṭī (; – 1248), was an Egyptian Arab historian, biographer, encyclopedist and administrator under the Ayyubid rulers of Aleppo. His biographical dictionary ''Kitāb Ikhbār al-'Ulamā' bi Akhbār al-Ḥukamā'' (, tr. 'History of Learned Men') is an important source of Islamic biography. Much of his vast literary output is lost, including his histories of the Seljuks, Buyids and the Maghreb, and biographical dictionaries of philosophers and philologists. Life 'Alī al-Qifṭī, known as Ibn al-Qifṭī, was a native of Qift, Upper Egypt, the son of ''al- Qāḍī al-Ashraf'', Yūsuf al-Qifṭī (b.548/1153), and the grandson of Ibrāhīm ibn 'Abd al-Wāḥid, ''al-Qāḍī al-Awḥad'' in the Ayyūbid court. Alī succeeded his father and grandfather into court administration but displayed scholarly inclinations. When the family left Qift in 1177, following the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astrolabe
An astrolabe (; ; ) is an astronomy, astronomical list of astronomical instruments, instrument dating to ancient times. It serves as a star chart and Model#Physical model, physical model of the visible celestial sphere, half-dome of the sky. Its various functions also make it an elaborate inclinometer and an analog computer, 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 horizontal coordinate system, 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 (and vice versa), to survey, or to triangulation, triangulate. It was used in classical antiquity, the Islamic Golden Age, the European Middle Ages and the Age of Discovery for all these purposes. The astrolabe, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
9th-century Iranian Astronomers
The 9th century was a period from 801 (represented by the Roman numerals DCCCI) through 900 (CM) in accordance with the Julian calendar. The Carolingian Renaissance and the Viking raids occurred within this period. In the Middle East, the House of Wisdom was founded in Abbasid Baghdad, attracting many scholars to the city. The field of algebra was founded by the Muslim polymath al-Khwarizmi. The most famous Islamic scholar Ahmad ibn Hanbal was tortured and imprisoned by Abbasid official Ahmad ibn Abi Du'ad during the reign of Abbasid caliph al-Mu'tasim and caliph al-Wathiq. In Southeast Asia, the height of the Mataram Kingdom happened in this century, while Burma would see the establishment of the major kingdom of Pagan. Tang China started the century with the effective rule under Emperor Xianzong and ended the century with the Huang Chao rebellions. In America, the Maya experienced widespread political collapse in the central Maya region, resulting in internecine warfare ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
