1) The Book of Ingenious Devices (كتاب الحيل), published in 850 by the three brothers, known as the Banu Musa working at the House of Wisdom in Baghdad, Iraq, under the Abbasid Caliphate. The book described about one hundred devices and how to use them... 1/6
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2) The book was commissioned by the Abbasid Caliph of Baghdad Al-Ma'mun. The Banū Mūsā brothers invented a number of automata and mechanical devices, some of the devices described in the Book were inspired by the works of ancient Persian, Chinese and Indian
engineering...2/6

3) Many of their innovations involved subtle combinations of pneumatics and aerostatics. The closest modern parallel to their work lies in control engineering and pneumatic instrumentation. In turn, Al-Jazari, who produced a similarly titled book in 1206... 3/6
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4)The Book of Ingenious Devices was widely circulated across the Muslim world, some of its ideas may have also reached Europe through Islamic Spain, such as the use of automatic controls in later European machines or the use of conical valves in the work of Leonardo da Vinci..4/6

5) Another important work of theirs is the Book on the Measurement of Plane and Spherical Figures, a foundational work on geometry that was frequently quoted by both Islamic and European mathematicians...5/6

6) The Banu Musa worked in astronomical observatories established in Baghdad by the Abbasid Caliph al-Ma'mun as well as doing research in the House of Wisdom. They also participated in a 9th-century expedition to make geodesic measurements to determine the length of a degree..6/6