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Treatise for Observers on Constructing the Circle of Projection
This work is a treatise on the important subject of timekeeping. It is a work of technical astronomy, in 19 folios, that begins by emphasizing the religious significance of knowledge of time. It is divided into an introduction, two chapters, and a conclusion. Comprehensive procedures for the construction of tables and their use are provided. The work was completed in 1473 (878 A.H.).
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National Library and Archives of Egypt
Illuminated Leaf from Avicenna's Canon of Medicine
Abū ‘Alī al-Ḥusayn ibn ‘Abd Allāh ibn Sīnā (980–1037), commonly known as Avicenna, was born at Afshaneh, near Bukhara in Persia (present-day Uzbekistan). By the age of 10, he was well versed in the study of the Qur’ān and various sciences. He was the most famous and influential of the many Islamic scholars, scientists, and philosophers of the medieval world. He was foremost a physician but was also an astronomer, chemist, geologist, psychologist, philosopher, logician, mathematician, physicist, and poet. A prolific writer in all of these fields ...
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Qatar National Library