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Islamic Golden Age: the story on HearLore | HearLore
Islamic Golden Age
In the year 832, Caliph al-Mansur established the House of Wisdom in Baghdad, a library and translation center that would become the intellectual engine of the Islamic Golden Age. This institution was not merely a repository of books but a bustling hub where scholars from across the Muslim world flocked to translate the classical knowledge of the ancient world into Arabic and Persian. The scale of this endeavor was staggering; the money spent on translations alone was estimated to be equivalent to twice the annual research budget of the United Kingdom's Medical Research Council. At the helm of this massive translation movement was Hunayn ibn Ishaq, a Christian physician whose salary was comparable to that of a professional athlete today. Under his leadership, the House of Wisdom translated the works of Galen, Hippocrates, Plato, Aristotle, Ptolemy, and Archimedes, preserving knowledge that might otherwise have been lost to history. The translators included not only Muslims but also Christians, particularly adherents of the Church of the East, who had preserved Greek and Syriac texts since the Hellenistic period. The personal physicians of the Abbasid Caliphs were often Assyrian Christians, such as the Bukhtishu dynasty, who played a crucial role in the transmission of medical knowledge. This cross-cultural collaboration laid the foundation for a scientific renaissance that would influence the world for centuries.
The Algebra of the East
The development of algebra and geometry during the Islamic Golden Age transformed mathematics from a tool of measurement into a rigorous abstract science. In the 9th century, the Persian mathematician Muammad ibn Musa al-Khwarizmi wrote a groundbreaking treatise that introduced the concept of algebra, earning him the title of the father of algebra. His work laid the foundation for solving linear and quadratic equations, and the very word algebra is derived from the title of his book, Kitab al-Jabr wa-l-Muqabala. Another Persian mathematician, Omar Khayyam, is credited with identifying the foundations of analytic geometry and finding the general geometric solution of the cubic equation. His book, Treatise on Demonstrations of Problems of Algebra, published in 1070, was a significant step in the development of algebra. Sharaf al-Din al-Tusi, another Persian mathematician, found algebraic and numerical solutions to various cases of cubic equations and developed the concept of a function. In the realm of geometry, Islamic art made use of geometric patterns and symmetries in many of its art forms, notably in girih tilings. These tiles, formed using a set of five shapes, offered fivefold and tenfold symmetries and were decorated with strapwork lines. In 2007, physicists Peter Lu and Paul Steinhardt argued that girih from the 15th century resembled quasicrystalline Penrose tilings. Jamshid al-Kashi's estimate of pi would not be surpassed for 180 years. The Islamic mathematicians also made significant contributions to trigonometry, with Ibn Muadh al-Jayyani writing The Book of Unknown Arcs of a Sphere in the 11th century, which contained the law of sines. The earliest use of statistical inference was given by Al-Kindi, who described the method of frequency analysis in his manuscript on deciphering cryptographic messages.
Common questions
When did the Islamic Golden Age begin and end?
The Islamic Golden Age traditionally began in the 8th century and ended with the siege of Baghdad in 1258. The period of cultural flourishing lasted from 786 to 1258 according to the provided script.
Who established the House of Wisdom in Baghdad and when?
Caliph al-Mansur established the House of Wisdom in Baghdad in the year 832. This institution served as a library and translation center that became the intellectual engine of the Islamic Golden Age.
What were the major mathematical contributions of the Islamic Golden Age?
Muhammad ibn Musa al-Khwarizmi wrote a groundbreaking treatise in the 9th century that introduced the concept of algebra. Omar Khayyam identified the foundations of analytic geometry and found the general geometric solution of the cubic equation in his book published in 1070.
How did Islamic hospitals function during the Islamic Golden Age?
The first known Islamic hospital was built in 805 in Baghdad by order of Harun al-Rashid. These hospitals required medical diplomas to license doctors and were run by a three-man board comprising a non-medical administrator, the chief pharmacist, and the chief physician.
Which architectural achievements define the Islamic Golden Age?
The Great Mosque of Kairouan in Tunisia was founded in 670 and is one of the best preserved examples of early great mosques. The Great Mosque of Samarra in Iraq was completed in 847 and combined hypostyle architecture with a huge spiralling minaret.
What caused the end of the Islamic Golden Age?
The Islamic Golden Age ended with the collapse of the Abbasid caliphate due to Mongol invasions and the siege of Baghdad in 1258. The destruction of Baghdad and the House of Wisdom by Hulagu Khan in 1258 has been seen by some as the end of the era.
Ibn al-Haytham, known in the West as Alhazen, is often described as the world's first true scientist due to his pioneering work in the scientific method and optics. In the 11th century, he correctly argued that vision occurred when light, traveling in straight lines, reflects off an object into the eyes, challenging the prevailing emission theory supported by Euclid and Ptolemy. His work on optics laid the foundation for modern physics and influenced the development of the camera obscura. Ibn al-Haytham also discovered the sum formula for the fourth power, using a method that could be generally used to determine the sum for any integral power. He used this to find the volume of a paraboloid and could find the integral formula for any polynomial without having developed a general formula. In the field of astronomy, Ibn al-Haytham was one of the first to criticize the geocentric system developed by Ptolemy. He argued that the planets moved on circles called epicycles and that their centers rode on deferents, which were eccentric. In the 13th century, Nasir al-Din al-Tusi constructed the Maragha Observatory in what is today Iran and found the equant dissatisfying. He replaced it by adding a geometrical technique called a Tusi-couple, which generates linear motion from the sum of two circular motions. This new model properly aligned the celestial spheres and was mathematically sound. The names for some of the stars used, including Betelgeuse, Rigel, Vega, Aldebaran, and Fomalhaut, are several of the names that come directly from Arabic origins or are the translations of Ptolemy's Greek descriptions which are still in use today.
The Golden Age of Medicine
The Islamic Golden Age saw the establishment of some of the earliest and most advanced hospitals in the world, with the first known Islamic hospital built in 805 in Baghdad by order of Harun al-Rashid. By the tenth century, Baghdad had five more hospitals, while Damascus had six hospitals by the 15th century and Cordoba alone had 50 major hospitals, many exclusively for the military. The typical hospital was divided into departments such as systemic diseases, surgery, and orthopedics, with larger hospitals having more diverse specialties. Hospitals staff included sanitary inspectors, who regulated cleanliness, and accountants and other administrative staff. The hospitals were typically run by a three-man board comprising a non-medical administrator, the chief pharmacist, and the chief physician. Medical students would accompany physicians and participate in patient care. Hospitals in this era were the first to require medical diplomas to license doctors. The licensing test was administered by the region's government appointed chief medical officer. The test had two steps; the first was to write a treatise, on the subject the candidate wished to obtain a certificate, of original research or commentary of existing texts, which they were encouraged to scrutinize for errors. The second step was to answer questions in an interview with the chief medical officer. Physicians worked fixed hours and medical staff salaries were fixed by law. For regulating the quality of care and arbitrating cases, it is related that if a patient dies, their family presents the doctor's prescriptions to the chief physician who would judge if the death was natural or if it was by negligence, in which case the family would be entitled to compensation from the doctor. The hospitals had male and female quarters while some hospitals only saw men and other hospitals, staffed by women physicians, only saw women. While women physicians practiced medicine, many largely focused on obstetrics. Hospitals were forbidden by law to turn away patients who were unable to pay. Eventually, charitable foundations called waqfs were formed to support hospitals, as well as schools. Part of the state budget also went towards maintaining hospitals. While the services of the hospital were free for all citizens and patients were sometimes given a small stipend to support recovery upon discharge, individual physicians occasionally charged fees. In a notable endowment, a 13th-century governor of Egypt Al-Mansur Qalawun ordained a foundation for the Qalawun hospital that would contain a mosque and a chapel, separate wards for different diseases, a library for doctors and a pharmacy and the hospital is used today for ophthalmology. The Qalawun hospital was based in a former Fatimid palace which had accommodation for 8,000 people , it served 4,000 patients daily.
The Architecture of Faith
The Islamic Golden Age produced some of the most magnificent architectural achievements in history, with the Great Mosque of Kairouan in Tunisia, founded in 670, being one of the best preserved and most significant examples of early great mosques. The Great Mosque of Samarra in Iraq was completed in 847 and combined the hypostyle architecture of rows of columns supporting a flat base, above which a huge spiralling minaret was constructed. The beginning of construction of the Great Mosque at Cordoba in 785 marked the beginning of Islamic architecture in Spain and Northern Africa. The mosque is noted for its striking interior arches. Moorish architecture reached its peak with the construction of the Alhambra, the magnificent palace/fortress of Granada, with its open and breezy interior spaces adorned in red, blue, and gold. The walls are decorated with stylized foliage motifs, Arabic inscriptions, and arabesque design work, with walls covered in geometrically patterned glazed tiles. Many traces of Fatimid architecture exist in Cairo today, the most defining examples include the Al Azhar University and the Al Hakim mosque. The Great Mosque of Kairouan is constituted of a three-tiered square minaret, a large courtyard surrounded by colonnaded porticos, and a huge hypostyle prayer hall covered on its axis by two cupolas. The Great Mosque of Samarra in Iraq was completed in 847. It combined the hypostyle architecture of rows of columns supporting a flat base, above which a huge spiralling minaret was constructed. The beginning of construction of the Great Mosque at Cordoba in 785 marked the beginning of Islamic architecture in Spain and Northern Africa. The mosque is noted for its striking interior arches. Moorish architecture reached its peak with the construction of the Alhambra, the magnificent palace/fortress of Granada, with its open and breezy interior spaces adorned in red, blue, and gold. The walls are decorated with stylized foliage motifs, Arabic inscriptions, and arabesque design work, with walls covered in geometrically patterned glazed tiles. Many traces of Fatimid architecture exist in Cairo today, the most defining examples include the Al Azhar University and the Al Hakim mosque.
The Music of the Spheres
The ninth and tenth centuries saw a flowering of Arabic music, with philosopher and esthete Al-Farabi establishing the foundations of modern Arabic music theory, based on the maqammat, or musical modes. His work was based on the music of Ziryab, the court musician of Andalusia. Ziryab was a renowned polymath, whose contributions to western civilization included formal dining, haircuts, chess, and more, in addition to his dominance of the world musical scene of the ninth century. The Arabs had a musical scale, described by al-Farabi, in use by some through the 13th century A.D. That tanbar scale, which divided the string into 40 equal parts, may have been a leftover from Babylon and Assyria. However, the Arabs traded with and conquered the Persians, and they adopted Persian scales for their lutes, just as they adopted Persian short-necked lutes. Ziryab moved from Baghdad to al-Andalus, where he set up a school of music and was one of the first to add a fifth string or course to oud, between 822 and 852. Al-Andalus, where he settled, would become a center of musical instrument development for Europe. Al-Kindi was a polymath who wrote as many as 15 music-related treatises. He was among the first to apply Greek musical theory to Central Asian-Arabian short lutes. He added semi-tones between the nut and the first string. He also added a fifth string to his oud in the east, as Ziryab had done in the west. Al-Farabi fully incorporated the works of Aristoxenus and Ptolemy into his theory of tetrachords, and wrote among books in many subjects, the Kitab al-Musiqa al-Kabir, the Major Book of Music, in which he detailed how to tune an oud, using mathematical ratios. He gave instruction for both 10 frets and 12, telling where to place the tied and moveable gut-string frets on the neck. His way of tuning allowed a 12-fret ud tuning which results in a double-octave scale, with 22 notes in each octave. The mixing cultures of Central Asia and Arabia produced several thinkers who wrote about music, including something about the lute in their works, including Al-Kindi, Ziryab, Al-Farabi, Avicenna, and Safi al-Din al-Urmawi. They wrote in Arabic, what had become the useful lingua-Franca of their time, and took part in Muslim society and culture. However they were brought up in Central Asia.
The Decline of an Empire
The Islamic Golden Age, traditionally dated from the 8th century to the 13th century, ended with the collapse of the Abbasid caliphate due to Mongol invasions and the siege of Baghdad in 1258. The destruction of Baghdad and the House of Wisdom by Hulagu Khan in 1258 has been seen by some as the end of the Islamic Golden Age. However, while cultural influence used to radiate outward from Baghdad, after the fall of Baghdad, Iran and Central Asia saw a cultural flourishing by benefiting from increased cross-cultural access to East Asia under Mongol rule. Economic historian Joel Mokyr has argued that Islamic philosopher al-Ghazali, the author of The Incoherence of the Philosophers, was a key figure in the decline in Islamic science and that this led to a cultural shift shunning away from scientific thinking. In a 2014 opinion piece published by Al Jazeera, student of Islamic jurisprudence Mohamed Ghilan argued that al-Ghazali was not generally against science, only its encroachment upon religious matters. Professor of Arabic and Islamic Science George Saliba has pointed out that the golden age did not slow down after al-Ghazali, and argued that the golden age of astronomy should be located in the post-Ghazali period. Others extend the golden age to around the 16th to 17th centuries. Ahmad Y. al-Hassan has rejected the thesis that lack of creative thinking was a cause, arguing that science was always kept separate from religious argument; he instead analyzes the decline in terms of economic and political factors, drawing on the work of the 14th-century writer Ibn Khaldun. Several other contemporary scholars have analyzed the decline in terms of political and economic factors. Current research has led to the conclusion that the available evidence is consistent with the hypothesis that an increase in the political power of these elites caused the observed decline in scientific output. The decline could be part of a larger trend where the non-Western world fell behind the West in the Great Divergence. In 1206, Genghis Khan established the Mongol Empire which, during the 13th century, conquered most of the Eurasian land mass, including China in the east and much of the old Islamic caliphate as well as Kievan Rus in the west.