1000s (decade)

Template:Short description Template:Decadebox The 1000s was a decade of the Julian Calendar which began on January 1, 1000, and ended on December 31, 1009.

Science and technology

• The scientific achievements of the Islamic civilization reach their zenith. Major works from this decade include Ibn al-Haytham (Alhacen)'s Book of Optics, Abu al-Qasim al-Zahrawi (Abulcasis)'s 30-volume medical encyclopedia, the Al-Tasrif.
• Other significant contributions to scientific and mathematical understanding were made by Avicenna, who would later publish influential works on medicine, Persian Muslim polymath and scientist Abu Rayhan al-Biruni, Arab Egyptian Muslim mathematician and astronomer Ibn Yunus, Persian Muslim physicist and mathematician Abu Sahl al-Quhi (Kuhi) and Persian Muslim astronomer and mathematician, Abu-Mahmud al-Khujandi.
• The Law of sines is discovered by Muslim mathematicians.
• Bell foundry is founded in Italy.
• Gunpowder is invented in China.

Significant people

• Abd al-Rahman Ibn Yunus
• Al-Qadir caliph of Baghdad
• Abu al-Qasim al-Zahrawi (Abulcasis)
• Abu-Mahmud al-Khujandi
• Abu Nasr Mansur
• Abu Rayhan al-Biruni
• Alhacen (Ibn al-Haytham)
• Avicenna (Ibn Sina)
• Basil II
• Boleslaus I of Poland
• Brian Boru
• Bruno of Querfurt
• Robert II of France
• Robert Guiscard
• Roger I of Sicily
• Sancho III of Navarre
• Stephen I of Hungary
• Sweyn I of Denmark
• Tsar Samuil of Bulgaria