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A second period of activity was during the Abbasid Caliphate between 750 and 1258. The latest activities, by the Saudi Arabian Mining Company began in 1936 using both open-pit and underground mines at Mahd adh-Dhahab. The Saudi Arabian Directorate General of Mineral Resources carried out further gold exploration in the 1970s, following the 1971 ...
Created in the 6th century, it reached its peak under the Abbasid Caliphate, when it served the main water supply for the Abbasid capital of Baghdad, while the regions irrigated by it served as the city's main breadbasket. Its destruction and progressive abandonment from the mid-10th century onwards mirror the Abbasid Caliphate's decline.
The main form of bookbinding used under the Abbasid Caliphate was the binding-cum-case or box manuscript. This technique covered the Qur'an in a casket-like box in order to protect the contents. These boxes were typically made out of wooden boards and had a protective lining on the manuscript-facing side.
The Nahr Isa (Arabic: نهر عيسى, romanized: Nahr ʿĪsā) or Isa Canal was a navigable canal that linked the two great rivers of Mesopotamia, the Euphrates and the Tigris, during the Abbasid Caliphate. It was one of the main water sources and the main avenue of river-borne commerce for the Abbasid capital of Baghdad.
During the late Abbasid Era, the 28th Caliph, al-Mustazhir (r. 1094–1118 CE), built a new wall around the eastern side of Baghdad to protect it from invading armies and Bedouin raids. Along with the wall came several gates, one of which was the Bab al-Talsim, then known as Bab al-Halba .
The Tusi couple, a mathematical device invented by the Persian polymath Nasir al-Din Tusi to model the not perfectly circular motions of the planets. Science in the medieval Islamic world was the science developed and practised during the Islamic Golden Age under the Abbasid Caliphate of Baghdad, the Umayyads of Córdoba, the Abbadids of Seville, the Samanids, the Ziyarids and the Buyids in ...
Made of six to twelve sails covered in reed matting or cloth material, these windmills were used to grind grains and draw up water, and used in the gristmilling and sugarcane industries. [74] Horizontal axle windmills of the type generally used today, however, were developed in Northwestern Europe in the 1180s. [70] [71] 11th-12th centuries
The first city converted to Islam and the base for Muhammad's conquest of Arabia, Medina was the first capital of the nascent caliphate. [1] Despite the attempt to return it to Medina during the Second Fitna (680–692), the political seat of the Muslim world quickly shifted permanently away from the Hejaz, first to Damascus under the Umayyad Caliphate (661–750) and then to Baghdad under the ...