Omar Khayyám

The man known in English as the Persian poet Omar Khayyám (May 18 1048 - December 4 1123, assumed dates) was born in Nishapur (or Naishapur) in Khorasan, Persia (Iran), and named Ghiyath al-Din Abu'l-Fath Umar ibn Ibrahim Al-Nisaburi al-Khayyami (al-Khayyami means "the tentmaker"). His name in Persian is "??? ????".

Omar Khayyam the astronomer

In 1073, the Malik-Shah, ruler of Isfahan, invited Khayyám to build and work with an observatory, along with various other distinguished scientists. Eventually, Khayyám very accurately (correct to within six decimal places) measured the length of the year as 365.24219858156 days.

Related Topics:
1073 - Isfahan

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He was famous in Persian and Islamic world for his astronomical observations. He built a (now lost) map of stars in the sky.

Related Topics:
Persian - Islamic

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