Lectionary Calendar
Friday, April 4th, 2025
the Fourth Week of Lent
the Fourth Week of Lent
There are 16 days til Easter!
advertisement
advertisement
advertisement
Attention!
Take your personal ministry to the Next Level by helping StudyLight build churches and supporting pastors in Uganda.
Click here to join the effort!
Click here to join the effort!
Bible Encyclopedias
Isaac Ibn Sid (Zag; Çag)
The 1901 Jewish Encyclopedia
Search for
Resource Toolbox
Spanish astronomer; flourished at Toledo in the second half of the thirteenth century. From the surname "haḤazzan," given him by Isaac Israeli ("Yesod'Olam," 4:30), it may be inferred that he was precentor at the synagogue. Isaac ibn Sid took a leading part in the compilation of the ALFONSINE TABLES. Isaac Israeli (ib.) states that he saw recorded in Isaac ibn Sid's own handwriting three observations of moon-eclipses made by him at the order of Alfonso. In official documents (De Castro, "Bibliotheca," 1:184b) Isaac ibn Sid is termed by Alfonso "our learned Rabbi Çag." In 1277 Isaac translated from the Arabic a work on the quadrant. His name is also connected with the invention of various instruments (De Castro, c. 1:144a, 156a, 157).
Bibliography:
- Grätz, Gesch. 7:115;
- Steinschneider, Hebr. Uebers. pp. 617 et seq.
G.
I. Br.
Copyright Statement
These files are public domain.
These files are public domain.
Bibliography Information
Singer, Isidore, Ph.D, Projector and Managing Editor. Entry for 'Isaac Ibn Sid (Zag; Çag)'. 1901 The Jewish Encyclopedia. https://www.studylight.org/​encyclopedias/​eng/​tje/​i/isaac-ibn-sid-zag-aag.html. 1901.
Singer, Isidore, Ph.D, Projector and Managing Editor. Entry for 'Isaac Ibn Sid (Zag; Çag)'. 1901 The Jewish Encyclopedia. https://www.studylight.org/​encyclopedias/​eng/​tje/​i/isaac-ibn-sid-zag-aag.html. 1901.