Abd al-'Aziz ibn Mahammad al-Qahiri al-Shafi' al-Wafa'i known as Ibn al-Aqba'i (1408–1471) was an

Egyptian ''Egyptian'' describes something of, from, or related to Egypt. Egyptian or Egyptians may refer to: Nations and ethnic groups * Egyptians, a national group in North Africa ** Egyptian culture, a complex and stable culture with thousands of year ...

astronomer and mathematician in the 15th century. He was born in 811 H.E. (1408 AD) and died in 876 H.E (1471 AD). Some sources say that he died in 874 or 879 H.E. He was a student of Ibn al-Majdi and Nur al-din al-Naqqash. He became a time keeper at the

Mosque of Sultan al-Muayyad The Mosque of Sultan al-Mu'ayyad () is a Mosque in Cairo, Egypt next to Bab Zuwayla built under the rule of sultan Shaykh al-Mahmudi, Al-Mu'ayyad Sayf ad-Din Shaykh from whom it takes its name, "''Al-Mu'ayyad''", meaning ''The Supporter'' in Arabi ...

Cairo Cairo ( ; , ) is the Capital city, capital and largest city of Egypt and the Cairo Governorate, being home to more than 10 million people. It is also part of the List of urban agglomerations in Africa, largest urban agglomeration in Africa, L ...

. He also became the chief of the time keepers of the Azhar mosque and the Maridani Mosque. He was interested in the calculation of the local times of cities based on their latitude and longitude. He invented an astronomical device called Da'irah al-Mu'addal. He wrote about 40 books and 20 treatises on

mathematics Mathematics is a field of study that discovers and organizes methods, Mathematical theory, theories and theorems that are developed and Mathematical proof, proved for the needs of empirical sciences and mathematics itself. There are many ar ...

and

astronomy Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry in order to explain their origin and their overall evolution. Objects of interest includ ...

, none of them published. Among his works is the manuscript Risalah al-'Amal bi al-Rub' al-Mujayyab

References

{{DEFAULTSORT:Abd al-Aziz al-Wafai 1408 births 1471 deaths Scientists who worked on qibla determination 15th-century astronomers Medieval Egyptian astronomers Medieval Egyptian mathematicians Scholars from the Mamluk Sultanate Astronomers of the medieval Islamic world