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George Saliba is a historian of Arabic and Islamic Science. He has been teaching at Columbia University since 1978. After completing a B.S. in Mathematics and an M.A. at the American University of ...

In French, when speaking in the past tense, one must constantly choose between the imparfait and the passé composé (cf. part I). In this exercise we will focus on cases where both tenses are used in a ...

Chapter 1 Chemical Bonding Sections 1.1-1.6: html / PowerPoint / PDF 1.1 ATOMS, ELECTRONS, AND ORBITALS 1.2 IONIC BONDS 1.3 COVALENT BONDS 1.4 DOUBLE BONDS AND TRIPLE BONDS 1.5 POLAR COVALENT BONDS ...

"Aller Anfang ist schwer." Das heißt: Es ist hart zu beginnen; der Beginn ist nicht einfach. "Im Anfang war das Wort." Das ist der Beginn vom Johannes Evangelium im Neuen Testament. Johannes 1 beginnt ...

olumbia University was founded in 1754 as King’s College by royal charter of King George II of England. It is the oldest institution of higher learning in the state of New York and the fifth oldest in ...

Timothy Mitchell is a political theorist and historian. His areas of research include the place of colonialism in the making of modernity, the material and technical politics of the Middle East, and ...

This subseries describes over 160 photographs taken by Leroy Hulbert. According to Edward R. Bosley, Leroy Hulbert was "commissioned by the Greenes in about 1915 to document their most important work.

IBM founded its Watson Scientific Computing Laboratory at Columbia University February 6, 1945, during the final months of World War II, first to provide computing services to the Allies, and then to ...

Outside, a system of rings developed around Low Library. Opponents (called "jocks" although they weren't only jocks) formed the inner ring; student supporters (known, along with us, as "pukes") formed ...

FEW, who have not come directly in contact with a census office, can form any adequate idea of the labor involved in the compilation of a census of 50,000,000 persons, as was the case in the last ...

Columbia's IBM 1403 Line Printers in the Machine Room about 1971. Photo courtesy of Steve Bellovin. The IBM 1403 printer was introduced in October 1959 with the 1401 Data Processing System. We had ...