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  1. Competing Theories of Spherical Trigonometry

    Dr Nathan Sidoli In the medieval and early modern periods, the same group of individuals who developed new mathematical methods and theories were often ...


  2. Menelaus’ Spherics

    Dr Nathan Sidoli Mathematicians in medieval Islamic societies were the first to grasp the real significance of Menelaus’ Spherics. They followed Menelaus’ ...


  3. The Shaikh who lost his Shaikhdom, Khaz’al al-Ka‘bī of Mohammerah

    Louis Allday The life and times of Shaikh Khaz’al bin Jābir bin Mirdāw al-Ka‘bī (1861-1936), the Emir of Mohammerah and chief of the Banu Ka’b ...


  4. Finding Aid: Political (External) Department Records

    Alex Hailey An overview of records on the Qatar Digital Library originating from the Political (External) Department (IOR/L/PS/12), including a description ...


  5. Arabic Commentators on Ptolemy's Almagest

    Dr María José Parra Pérez- Independent Researcher Among pre-modern Arabic scholars, the Almagest was generally regarded as the most authoritative work ...


  6. Translating a Work of Higher Mathematics

    Dr Nathan Sidoli During the early ʿAbbāsid period (ninth century CE), a diverse group of scholars collaborated on the long-term project of translating ...


  7. ʽAbd al-Raḥmān al-Ṣūfī and the Revision of Ptolemy’s Star Catalogue

    Prof. Julio Samso In AD 137, Ptolemy compiled a catalogue of forty-eight constellations containing 1022 stars. ʽAbd al-Raḥmān al-Ṣūfī revised ...


  8. Telegraphy: The Gulf’s Most Admired Means of Communication in the 1860s

    Karen Stapley How do you reduce communication times between the Gulf and India, from months, to a matter of weeks? In the 1860s, the telegraph was the ...


  9. Pearl Diving: Inside the Trade That Shaped the Gulf

    Martin Woodward What was the life of a diver like and how did the trade function? Papers in the India Office Records provide some fascinating clues. Pearl ...


  10. Arabic Scientific Tradition

    Dr Nahyan Fancy For eight hundred years, the Arabic scientific tradition was superior to that found in western Eurasia. It gave birth to new theories ...


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