Strabo

Greek geographer and historian whose Geography is the only extant work covering the whole range of peoples and countries known to both Greeks and Romans during the reign of Augustus (27 BC–AD 14). Its numerous quotations from technical literature, moreover, provide a remarkable account of the state of Greek geographical science, as well as of the history of

Azhar University, Al-

Chief centre of Islamic and Arabic learning in the world, centred on the mosque of that name in the medieval quarter of Cairo, Egypt. It was founded by the Fatimids in AD 970 and was formally organized by 988. The basic program of studies was, and still is, Islamic law, theology, and the Arabic language. Late in the European Middle Ages philosophy and medicine were added to the curriculum,

National Book Awards

Annual awards given to books of the highest quality written by Americans and published by American publishers. The awards were founded in 1950 by the American Book Publishers Council, American Booksellers Association, and Book Manufacturers Institute. From 1976 to 1979 they were administered by the National Book Committee. In 1980 they were renamed the American Book Awards and

Ryle, Sir Martin

British radio astronomer who developed revolutionary radio telescope systems and used them for accurate location of weak radio sources. With improved equipment, he observed the most distant known galaxies of the universe. Ryle and Antony Hewish shared the Nobel Prize for Physics in 1974, the first Nobel prize

Kitakami-sammyaku

(Japanese: Kitakami Range), mountain range, in northeastern Honshu, Japan, paralleling the Pacific coast and extending for about 155 mi (250 km) from southern Aomori Prefecture, through Iwate and Miyagi prefectures, to terminate in the Ojika Peninsula. The range has a maximum breadth of 50 mi and is nearly wedge shaped. The highest peak, Hayachine-san, rises to an elevation of 6,280 ft (1,914 m)

China, A land revolution

One reason for Communist success was the social revolution in rural China. The CCP was now unrestrained by the multiclass alliance of the United Front period. In the middle of 1946, as civil war became more certain, the party leaders launched a land revolution. They saw land redistribution as an integral part of the larger struggle; by encouraging peasants to seize the

Hesychasm

In Eastern Christianity, type of monastic life in which practitioners seek divine quietness (Greek hesychia) through the contemplation of God in uninterrupted prayer. Such prayer, involving the entire human being—soul, mind, and body—is often called “pure,” or “intellectual,” prayer or the Jesus prayer. St. John Climacus, one of the greatest writers of the Hesychast tradition,

Gender

In language, a phenomenon in which the words of a certain part of speech, usually nouns, require the agreement, or concord, through grammatical marking (or inflection), of various other words related to them in a sentence. In languages that exhibit gender, two or more classes of nouns control variation in words of other parts of speech (typically pronouns and adjectives

Hesperorthis

Extinct genus of brachiopods, or lamp shells, which as fossils are especially characteristic of Ordovician marine rocks (438 to 505 million years old). The plano-convex shell of Hesperorthis consists of two units (or valves), the brachial valve being flat and the pedicle valve convex. The shell has a radiating pattern of ribs and a relatively broad, triangular area at the dorsal