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Al-Khwarizmi. Muhammad ibn Musa al-Khwarizmi[ note 1] ( Persian: محمد بن موسى خوارزمی; c. 780 – c. 850 ), often referred to as simply al-Khwarizmi, was a polymath who produced vastly influential Arabic-language works in mathematics, astronomy, and geography. Hailing from Khwarazm, he was appointed as the astronomer and head ...
The Tusi couple, a mathematical device invented by the Persian polymath Nasir al-Din Tusi to model the not perfectly circular motions of the planets. Science in the medieval Islamic world was the science developed and practised during the Islamic Golden Age under the Abbasid Caliphate of Baghdad, the Umayyads of Córdoba, the Abbadids of Seville, the Samanids, the Ziyarids and the Buyids in ...
Al-Biruni. Abu Rayhan Muhammad ibn Ahmad al-Biruni / ælbɪˈruːni / ( Persian: ابوریحان بیرونی; Arabic: أبو الريحان البيروني; 973 – after 1050), [ 5] known as al-Biruni, was a Khwarazmian Iranian scholar and polymath during the Islamic Golden Age. He has been called variously "Father of Comparative Religion ...
Abbas ibn Firnas. Abu al-Qasim Abbas ibn Firnas ibn Wirdas al-Takurini ( Arabic: أبو القاسم عباس بن فرناس بن ورداس التاكرني; c. 809/810 – 887 A.D. ), known as Abbas ibn Firnas ( Arabic: عباس ابن فرناس) was an Andalusi polymath: [ 1][ 2][ 3] an inventor, astronomer, physician, chemist, engineer ...
Postal rates to 1847. Initial United States postage rates were set by Congress as part of the Postal Service Act signed into law by President George Washington on February 20, 1792. The postal rate varied according to "distance zone", the distance a letter was to be carried from the post office where it entered the mail to its final destination.
Al-Zahrawi was a court physician to the Andalusian caliph Al-Hakam II. He was a contemporary of Andalusian chemists such as Ibn al-Wafid, al-Majriti and Artephius. He devoted his entire life and genius to the advancement of medicine as a whole and surgery in particular.
Steel mill: By the 11th century, much of the Islamic world had industrial steel watermills in operation, from Al-Andalus and North Africa to the Middle East and Central Asia. [ 84] Weight -driven clock: Arabic engineers invented water clocks driven by gears and weights in the 11th century.
Alchemy in the medieval Islamic world refers to both traditional alchemy and early practical chemistry (the early chemical investigation of nature in general) by Muslim scholars in the medieval Islamic world. The word alchemy was derived from the Arabic word كيمياء or kīmiyāʾ[ 1][ 2] and may ultimately derive from the ancient Egyptian ...