Zij as-Sindhind

Zīj as-Sindhind (

. He adds that its meaning is al-dahr al-dahir (infinite time or cyclic time).

Content

This is the first of many Arabic zijs 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. ^{[citation needed]}

As described by Said al-Andalusi, as-Sindhind divides time into cyclic periods of creation and destruction which are called kalpas.

Notes

Sources

• Andalusī, Ṣāʻid ibn Aḥmad; Salem, Semaʻan I.; Kumar, Alok (1991). Science in the Medieval World: Book of the Categories of Nations. Austin, Texas:
  ISBN 0292704690
  .
• Plofker, Kim (2007). "Fazārī: Muḥammad ibn Ibrāhīm al‐Fazārī". In Thomas Hockey; et al. (eds.). The Biographical Encyclopedia of Astronomers. New York: Springer. pp. 362–3.
  ISBN 978-0-387-31022-0. (PDF version
  )