Al-Maʾmūn

“…In the mind of the seventh Abbasid caliph, al-Ma’mun (r. 813–833), that future idealistic society could only be achieved through science and rationalism. In order to achieve this, the various threads of scientific…”

“…flocked to Baghdad to be a part of al-Ma’mun’s project. For the first time in history , the best of Persia, Egypt, India, and for - mer Byzantine lands could be brought together…”

“…mythology of astrology . With the patronage of al-Ma’mun and the House of Wisdom, astronomers were collected to study the ancient theories of Ptolemy , whose work was seen as final word on…”

“…ancient House of Wisdom that was established by al-Ma’mun to push scientific learning to new frontiers was razed to the ground. Its books were dumped into the Tigris River, the ink from hundreds…”

“…on the same level as the earlier Abbasid al-Ma’mun and the later Ottoman Suleiman the Magnificent. Over 600 libraries dotted Cordoba, the capital. Its largest library boasted a collection of over 400,000 books…”

“…gold dinar of Caliph al-Mansur . 813 Caliph Al-Ma'mun expands the House of Wisdom; the translation movement intensif:tes. 1 1.1 1.1.1 T.l l l lli iJili.I.I. LI.I.LII I II J IITIIIIII 750 Abbasids…”

“…reputation gained during the reigns of Caliphs Al-Rashid, Al-Ma'mun, Al-Mu'tadhid, and Al-Muktan. The reason Baghdad had reached and maintained such a pinnacle was that these caliphs had taken a personal interest in collecting…”

“…Hippocrates and Galen. It is said that Caliph Al-Ma'mun wrote to the king of Sicily asking him for the entire contents of the Librar y of Sicily, which was rich in philosophical and…”

“…HOPS ti s said that the Abbasid Caliph Al-Ma'mun paid translators the weight in gold of each book that they translated from Gr eek into Arab ic. This produced a vast supply of…”

“…before this disco very, the enlightened ninth-century caliph Al-Ma'mun engaged a group of Muslim astronomers to measure the Earth's circumference. They did it by measuring the len gth of the terrestrial degree, which…”

“…of two weeks. In ninth-cen tury Baghdad Caliph Al-Ma'mun set up an intellectual academ y, the House of Wisdom, to translate manuscripts, which you can read about in the School chapter. Among the…”

“…work with these. There was one man, Caliph Al-Ma'mun, who ruled from Baghdad from 813 to 833, who really gave astronomy the patronage and impetus it needed to become a major science. He…”

“…Arabic names of many stars. Calip h AI- Ma'mun began the Muslim tradition of obser vatory build ing in the ninth century, when he founded facil ities in Baghdad and on Mo unt…”

“…crater in the ninth section named after Caliph Al-Ma'mun, the son of Harun al-Rashid, famous from The Thousand and One Nights. In 829, Al-Ma'mun built an observatory in Baghdad. In his acade my,…”

“…and nurtured on the traditions established by Caliph Al-Ma'mun. He was also a great historian, the most famous of his works being Swvey of Countries. • Ulugh Beigh is a prominent elliptical ring…”

“…Baghdad, Iraq; astronomer at the court of AI- Ma'mun. He compiled the so-called Al-Zij al-Mumtahan or The Validated Zij. Abu Abdullah al-Bakri (1014 -10 94); Hu elva, Spain; geographer and historian. Abu al-Fida'…”

“…Of \\USLI\ \ C...! '11 1/ .\T ION Al-Ma'mun, Abu Jafar al-Ma'mun ibn Harun Al-Muqaddasi, Muhammad ibn Ahmad Shams (786-833); one of the most enlightened Abba- al-Din (ca 945-1000); Jerusalem; historian and sid…”

“…Jew converted into Is lam, chief astronomer of Al-Ma'mun; distinguished member of the House of Wisdom. Yaqut, Ibn- 'Abdullah Rumi al-Hamawi (1179-1229); Arab biographer, historian, and geogr apher. Al-Zahrawi, Abu! Qas im Khalaf…”