World Library  
Flag as Inappropriate
Email this Article

Ibn al-Kammad

Article Id: WHEBN0027578277
Reproduction Date:

Title: Ibn al-Kammad  
Author: World Heritage Encyclopedia
Language: English
Subject: Hebrew astronomy, Astronomy in medieval Islam, Al-Adami, Sibt al-Maridini, Ibn al-Saffar
Publisher: World Heritage Encyclopedia

Ibn al-Kammad

Abu Jafar Ahmad ibn Yusuf ibn al‐Kammad (died 1195) was a Muslim astronomer born in Seville, Al-Andalus. He is known to have been educated in Cordoba by the students of Al-Zarqali. His works such as al Kawr ala al dawr, al Amad ala al abad, and al Muqtabas, which is a compilation of the two previous Zij, made him famous not only on the Iberian peninsula but across North Africa, and specifically Tunisia, where the astronomer Ibn Ishaq al Tunisi wrote commentaries on his works.[1]

An astrological work, Kitāb Mafātīḥ alasrār, (in which he states the duration of pregnancy depended on the horoscope) is also attributed to him and was strongly criticized by Ibn al Haim al Ishbili in the latter's al Zīj al kāmil (c.1205).



  • Comes, Mercè (2007). "Ibn al‐Kammād: Abū Jaʿfar Aḥmad ibn Yūsuf ibn al‐Kammād". In Thomas Hockey et al. The Biographical Encyclopedia of Astronomers. New York: Springer. pp. 559–60.   (PDF version)
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.