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  2. Four Great Inventions - Wikipedia

    en.wikipedia.org/wiki/Four_Great_Inventions

    The compass in the Four Great Inventions was formerly the compass of ancient China. It is a kind of direction-indicating tool, which is widely used in navigation, field exploration and other fields. In ancient times, it had a profound influence on trade, war and cultural exchange.

  3. al-Battani - Wikipedia

    en.wikipedia.org/wiki/Al-Battani

    Abū ʿAbd Allāh Muḥammad ibn Jābir ibn Sinān al-Raqqī al-Ḥarrānī aṣ-Ṣābiʾ al-Battānī [n 1] (Arabic: محمد بن جابر بن سنان البتاني), usually called al-Battānī, a name that was in the past Latinized as Albategnius, [n 2] (before 858 – 929) was an astronomer, astrologer, geographer and mathematician, who lived and worked for most of his life at Raqqa ...

  4. History of the compass - Wikipedia

    en.wikipedia.org/wiki/History_of_the_compass

    Song dynasty figurine of a man holding a compass. The compass is a magnetometer used for navigation and orientation that shows direction in regards to the geographic cardinal points. The structure of a compass consists of the compass rose, which displays the four main directions on it: East (E), South (S), West (W) and North (N). The angle ...

  5. Mimar Sinan - Wikipedia

    en.wikipedia.org/wiki/Mimar_Sinan

    Mimar Sinan (Ottoman Turkish: معمار سينان, romanized: Mi'mâr Sinân; Turkish: Mimar Sinan, pronounced [miːˈmaːɾ siˈnan]; c. 1488/1490 – 17 July 1588) also known as Koca Mi'mâr Sinân Âğâ, ("Sinan Agha the Grand Architect" or "Grand Sinan") was the chief Ottoman architect, engineer and mathematician for sultans Suleiman the Magnificent, Selim II and Murad III.

  6. Abu Sahl al-Quhi - Wikipedia

    en.wikipedia.org/wiki/Abu_Sahl_al-Quhi

    Engraving of al-Qūhī's perfect compass to draw conic sections. Al-Qūhī was the leader of the astronomers working in 988 AD at the observatory built by the Buwayhid amir Sharaf al-Dawla in Badhdad. He wrote a treatise on the astrolabe in which he solves a number of difficult geometric problems.

  7. Jabir ibn Aflah - Wikipedia

    en.wikipedia.org/wiki/Jabir_ibn_Aflah

    Abū Muḥammad Jābir ibn Aflaḥ (Arabic: أبو محمد جابر بن أفلح, Latin: Geber/Gebir; 1100–1150) was an Arab [1] [2] Muslim astronomer and mathematician from Seville, who was active in 12th century al-Andalus.

  8. AOL Mail

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Habash al-Hasib - Wikipedia

    en.wikipedia.org/wiki/Habash_al-Hasib

    Habash Hasib made astronomical observations from 825 to 835, and compiled three zijes (astronomical tables): the first were still in the Hindu manner; the second, called the 'tested" tables, were the most important; they are likely identical with the "Ma'munic" or "Arabic" tables and may be a collective work of al-Ma'mun's astronomers; the third, called tables of the Shah, were smaller.