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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 ...
An Iranian (Abbasid caliphate), aquamanile in the form of an eagle, bearing the date 180 AH/CE 796-797 is the earliest dated Islamic object in metalwork. It is cast in bronze, inlaid with silver and copper, and can be found in the Hermitage Museum , St. Petersburg , Russia .
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 ...
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.
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 internal politics of the Abbasid caliphate itself seem to have been unstable. In 870, Abū Aḥmad (b. al-Mutawakkil) al-Muwaffaḳ (d. 891) was summoned from exile in Mecca to re-establish Abbasid authority over southern Iraq. Quickly, however, he became the de facto ruler of the caliphate. As a result of this uncertainty, Ahmad ibn Tulun ...
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.
Hamid ibn al-Abbas was an Abbasid magnate who served as vizier of Caliph al-Muqtadir in 918–923. For most of that period, real power lay in the hands of his deputy, Ali ibn Isa ibn al-Jarrah, while Hamid tended to his tax farming estates at Wasit.