Category Archives: Islamic Sciences

Astrolabes and Angels, Epigrams and Enigmas

Art, Books You Should Read, Islamic Sciences

AN INTRODUCTION TO THE DE REGIO MONTE CODE, CARDINAL BESSARION’S AGENDA, AND PIERO DELLA FRANCESCA’S ENIGMA

[The noted historian of Islamic science, David A. King, recently retired from his position as Professor of the History of Science at Frankfurt University, has published a new book on two of the most remarkable objects surviving from the Renaissance, one an astrolabe and the other a painting. The connection between the two is described in detail in his new book Astrolabes and Angels, Epigrams and Enigmas – From Regiomontanus’ Acrostic for Cardinal Bessarion to Piero della Francesca’s Flagellation of Christ, Stuttgart: Franz Steiner, 2007. An associated website is http://web.uni-frankfurt.de/fb13/ign/Code.htm.]

Only recently have we achieved a better understanding of two monuments to the intellectual genius of the Renaissance, both of which have caused scholars a lot of trouble over several decades. As it happens, the two are intimately related.


The back of the astrolabe made by Regiomontanus for Cardinal Bessarion, with an inscription or epigram and the image of an angel.

One is an astrolabe, presented to the ageing Greek Cardinal Bessarion in Rome, 1462, by his new protégé, the young German astronomer Regiomontanus. Continue reading Astrolabes and Angels, Epigrams and Enigmas →

Mahdi as Hell: Look out Darwin

CyberOrient, Islam and Christianity, Islamic Sciences, Turkey

Has your atlas arrived yet? The New York Times reported yesterday that prominent American scientists and politicians are receiving what purports to be an “Atlas of Creation” from a Turkish media guru self-named Harun Yahya. No, it is not revenge for the “War on Terror.” Nor is a glossy book of patent nonsense, no matter how intelligently designed and styled as “probably the largest and most beautiful creationist challenge yet to Darwin’s theory” much of a challenge. Scientists will recognize it for a “load of crap,” as Kevin Padian, an evolutionary biologist at the University of California, Berkeley, impolitely phrased it.

The “War on Terror” has manufactured a whole host of new enemies. But what a strange bedfellow is Charles Darwin, who liberated science from the dogmatic demands of religious apologists like Mahdi Yahya a century and a half ago. Darwin’s approach now summarizes all of modern science, a steady advance in knowledge because no specific idea is ever held sacred. This does not mean that scientists must abandon religion and faith, but it does offer a view of the world in which human reason is not abandoned under the cloak and rhetorical dagger of a supposedly spiritual quest for moral behavior. Continue reading Mahdi as Hell: Look out Darwin →

The Prophet’s Medicine: Part Two

Islamic Sciences, Muhammad, Qur'an


[Illustration: Teaching Caesarean Birth, al-Biruni, (973-1051 CE)

THE MEDIEVAL ISLAMIC VIEW OF MAN

The Arabic books on the Prophet’s Medicine generally begin with an overview of the human constitution. Since this is far different than would be found in medical school today, it is important to understand the context in which statements about human health were made centuries ago. In describing man, seven parts of his “natural” being were distinguished. At the most fundamental level the human body was seen as a mixture of the four basic elements that defined the material world in classical science. These were fire (hot and dry), air (hot and wet), water (cold and wet) and earth (cold and dry). In this physical respect the human body was no different from other animals. And these were the same elements that were thought to make up everything material in the universe. Continue reading The Prophet’s Medicine: Part Two →

The Prophet’s Medicine: Part One

Islamic Sciences, Muhammad, Qur'an, Traditions (hadith literature)


[Illustration: Miniature illustrating the treatment of a patient, Serefeddin Sabuncuoglu. Jarrahiyatu’l-Hâniya. Millet Library, Ali Emiri, Tib 79.

In the 7th century Muhammad set in motion one of the world’s great religions, Islam. As an Arabian prophet, Muhammad spoke of the same God known to Jews and Christians for centuries. The message received by Muhammad, and revered today by over a billion Muslims, is contained in the Arabic Qur’an. Although the focus of this scripture is on the spiritual health of mankind, there are also numerous statements regarding physical health and emotional wellbeing. Muhammad himself often spoke regarding medicine and diet, and his words are accepted as authoritative only beneath the level of God’s revelation in the Qur’an. As Muslim scholars in later centuries encountered the medical traditions of classical Greece, Syriac tradition, and India, they compared this indigenous knowledge with the Qur’anic view of man and the prophet’s statements about health. Eventually, a specific literary genre called the “Prophet’s Medicine,” or al-tibb al-nabawi in Arabic, came into existence. In the texts of this genre Muslim scholars tried to merge the most accepted and current scientific knowledge about medicine with the folklore of Muhammad’s Arabia. Continue reading The Prophet’s Medicine: Part One →

Book of Curiosities

Art, Islamic Sciences, Islamic Texts, Maps

The Bodleian Library in collaboration with The Oriental Institute, University of Oxford, announces the electronic publication of The Book of Curiosities of the Sciences and Marvels for the Eyes, a newly discovered medieval Arabic treatise on the depiction of the Heavens and the Earth. The treatise is one of the most important recent finds in the history of Islamic cartography in particular, and for the history of pre-modern cartography in general. The publication of the treatise is mounted on a dedicated website employing a new method for publishing medieval maps. Continue reading Book of Curiosities →

Islam by the Numbers

Islamic Sciences

[Illustration: An astronomer calculates the position of a star with an armillary sphere and a quadrant in this illustration from a 16th-century Ottoman manuscript, ART ARCHIVE /UNIVERSITY LIBRARY ISTANBUL /DAGLI ORTI]

[Note: The current issue of “ARAMCO World” has a long and well illustrated article on the history of the sciences in the islamic World. This is written by Richard Covington, an author based in Paris.]

Like astronomy, which evolved from the practical necessities of finding the directions and hours for prayers, Islamic mathematics was very much a hands-on affair at the beginning, a product of the marketplace and of the need for pragmatic legal precedents. Both algebra and the use of zero had the same end in mind—streamlining computations for business deals. Al-Khwarizmi had a hand in the development of both.

In his Kitab al-jabr (Book of Algebra)— the word comes from the Arabic word jabara, “to restore”—the Baghdad mathematician spells out his no-nonsense intent: “It’s a summary encompassing the finest and most noble operations for calculations which men may require for inheritances and donations, for shares and judgments, for commerce and all sorts of transactions that they have among them such as surveying tracts of land, digging canals and other aspects and techniques.” Continue reading Islam by the Numbers →