Who is Abu Ma’shar Belhi?

Who is Abu Ma’shar Belhi?

June 25, 2021 Off By Felso

Abu Ma’shar Belh, the great astronomer who grew up in Baghdad. His name is Ja’far bin Muhammed bin Omer al-Belhi. Although it is mentioned in the sources that he was born in Belh in 785 (H.169), this date is not certain. He became famous with the name Albumasar in the Western world of science. He passed away on the eighth of March in 886 (H.272) in the city of Wasit.

Ebû Ma’şer made his first scientific studies on Iranian History, native languages ​​spoken in Khorasan and Indian culture. He was among the great scholars in the science of hadith. In Baghdad, where he went to learn science, he turned to the science of astronomy. Thanks to his tireless work and ambition, he became one of the greatest astronomers of his time. He benefited from the works of his teacher, Sened bin Ali, in his studies in the field of astronomy.

Abu Ma’şer lived at the same time as the great scholar Bettânî. His works had a profound impact on the development of astronomy and mathematics in Europe. The famous calculation method, which is named after him, has been the main application point in the field of astronomy for centuries.

Abu Ma’şer, who discovered the tide event for the first time, explained its nature and its relationship with the moon. This information was later transferred to European scientific circles. Philip K. Hitti, one of the researchers in the history of science: “Ebû Ma’şer, who taught the principles and laws of the tide event to Europe and put forward the theory in this field for the first time.” says.

Abu Ma’şer also put forward ideas about latitude degrees and lengths. His explanations on both the tide and the calculation of latitude degrees guided Europe in astronomical geography.


Abu Ma’şer has many works on astronomy and the calculation of times. Some of these are those:

1) Zîc-ül-Kebir: In this work, he examines the movements and activities of the stars. Although the work contains a great deal of information on astronomy, its technical explanations have not been entered. 2) Zîc-ül-Kırânât: The work, also called Zîc-üs-Sagîr, contains information about the determination of the positions of the stars. 3) Kitâb-ül-Emtâr ver-Riyâh: This work, which is about rains and winds, conveys the views of Indian scholars. 4) Kitâb-ül-Medhal to İlmi Ahkâm-in-Nucûm. The work was published in Europe on various dates.