Zij al-Sindhind

Zīj al-Sindhind (Arabic: السندهند, Zīj al‐Sindhind al‐kabīr, lit. "Great astronomical tables of the Sindhind"; from Sanskrit siddhānta, "system" or "treatise") is a work of zij (astronomical handbook with tables used to calculate celestial positions) brought in the early 770s AD to the court of Caliph al-Mansur in Baghdad from India. Al-Mansur requested an Arabic translation of this work from the Sanskrit. The 8th-century astronomer and translator Muhammad al-Fazari is known to have contributed to this translation.[1] In his book Ṭabaqāt al-ʼUmam (Categories of Nations)[2], Said al-Andalusi informs that others who worked on it include al-Baghdadi and al-Khwarizmi. He adds that its meaning is "al-dahr al-dahir" (infinite time or cyclic time).

Content

This is the first of many Arabic Zij's based on the Indian astronomical methods known as the Sindhind. The work contains tables for the movements of the sun, the moon and the five planets known at the time. It consists of approximately 37 chapters on calendar and astronomical calculations and 116 tables with calendar, astronomical and astrological data, as well as a table of sine values.

As described by Said al-Andalusi, al-Sindhind divides time into cyclic periods of creation and destruction which are called Kalpa (aeon).

Notes

  1. Plofker 2007.
  2. Andalusī, Ṣāʻid ibn Aḥmad; Salem, Semaʻan I.; Kumar, Alok (1991). Science in the medieval world : book of the Categories of nations. Austin: University of Texas Press. ISBN 0292704690. OCLC 23385017.
gollark: > If you oppose compromises to privacy on the grounds that you could do something that is misidentified as a crime, being more transparent does helpI mean, sure. But I worry about lacking privacy for reasons other than "maybe the government will use partial data or something and accidentally think I'm doing crimes".
gollark: Also, you can probably just treat privacy as a "terminal goal" like all the other weird drives us foolish humans have, but I think there are good reasons for it based on other stuff.
gollark: Are you missing some negatives or something? I'm failing to parse that.
gollark: I don't understand what you're saying.
gollark: If you want to retain privacy, it is not very useful to just give up all privacy and become uninteresting.

References


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.