Isaac ibn Sid was a Spanish-Jewish astronomer who flourished at the Toledo School of Translators in the second half of the thirteenth century.

Biography

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," i. 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, l.c. i. 144a, 156a, 157).

See also

• Toledo School of Translators

References

• Heinrich Grätz, Gesch. vii. 115;
• Moritz Steinschneider, Hebr. Uebers. pp. 617 et seq.
• Jewish encyclopedia

 This article incorporates text from a publication now in the public domain:  Singer, Isidore; et al., eds. (1901–1906). The Jewish Encyclopedia. New York: Funk & Wagnalls. {{ cite encyclopedia}}: Missing or empty |title= ( help)

External links

• Langermann, Y. Tzvi (2007). "Ibn Sid: Isaac ibn Sid". In Thomas Hockey; et al. (eds.). The Biographical Encyclopedia of Astronomers. New York: Springer. p. 570. ISBN  978-0-387-31022-0. ( PDF version)

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