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pool and riffle ... popular music

pool and riffle deep and shallow portions of an undulating stream bed. Pools are most easily seen in a meandering stream where the outer edge of each meander loop is deep and undercut; riffles form in the shallow water of the short, straight, wide reaches between adjacent loops. The pools and riffles form ... Pool, Maria Louise American writer whose sketches were well received in the period when the so-called local colour movement in American literature was just beginning. Poole town and unitary authority, geographic and historic county of Dorset, southwestern England, adjoining the major British resort of Bournemouth. The old town occupies a site on the north shore of an extensive, almost landlocked tidal harbour. The 25-square-mile (65-square-km) harbour is a major English yachting centre, and Poole still functions ... Poole, William Frederick American bibliographer and library administrator whose indexing of periodicals became authoritative. Poona Pact (Sept. 24, 1932), agreement between Hindu leaders in India granting new rights to untouchables (low-caste Hindu groups). The pact, signed at Poona (now Pune, Maharashtra), resulted from the communal award of Aug. 4, 1932, made by the British government on the failure of the India parties to agree, which allotted ... Poopo, Lake lake in west-central Bolivia, occupying a shallow depression in the Altiplano, or high plateau, at 12,090 feet (3,686 metres) above sea level. It is the country's second largest lake and covers 977 square miles (2,530 square km) at low stage. It is about 56 miles (90 km) long and 20 ... Poor Clare any order of nuns descending from the Franciscan order founded at Assisi, Italy, in 1212 by St. Clare of Assisi (1194-1253), a noblewoman who took a vow of poverty and became a follower of St. Francis of Assisi. She and her following of nuns, often called the Second Order of ... Poor Law in British history, body of laws undertaking to provide relief for the poor, developed in 16th-century England and maintained, with various changes, until after World War II. The Elizabethan Poor Laws, as codified in 1597-98, were administered through parish overseers, who provided relief for the aged, sick, and infant poor, ... Poor Richard unschooled but experienced homespun philosopher, a character created by the American writer and statesman Benjamin Franklin and used as his pen name for the annual Poor Richard's almanac, edited by Franklin from 1732 to 1757. Although the Poor Richard of the early almanacs was a dim-witted and foolish astronomer, he ... poorwill (species Phalaenoptilus nuttallii), nocturnal bird of North America belonging to the nightjar family (Caprimulgidae). The poorwill, named for its call, is about 20 cm (8 inches) long and has mottled gray plumage, a short tail with a bit of white at the corners, and a narrow bib, white in the ... Pop art art in which commonplace objects (such as comic strips, soup cans, road signs, and hamburgers) were used as subject matter and were often physically incorporated in the work. The Pop art movement was largely a British and American cultural phenomenon of the late 1950s and '60s and was named by ... pop ballad form of slow love song prevalent in nearly all genres of popular music. There are rock ballads, soul ballads, country ballads, and even heavy metal ballads. Popa Hill extinct volcano, central Myanmar (Burma), at the northern end of the Pegu Mountains. It rises to 4,981 feet (1,518 m), has a mile-wide crater, and is the highest point in the range. Popa Hill is believed to be the home of the 37 nats, or spirits, that are a part ... Popa, Vasko Serbian poet who wrote in a succinct modernist style that owed more to French surrealism and Serbian folk traditions than to the Socialist Realism that dominated Eastern European literature after World War II. Popayan capital of Cauca departamento, southwestern Colombia, at the base of Purace Volcano (15,603 feet [4,756 m]) on a tributary of the Cauca River, 5,702 feet (2,241 m) above sea level. Founded in 1535, the city has always been an administrative centre. During the colonial era, landowners and mining entrepreneurs resided ... popcorn a variety of corn (maize), the kernels of which, when exposed to heat or microwaves, are exploded into large fluffy masses. The corn used for popping may be any of about 25 different varieties of Zea mays; the two major types are rice popcorn, in which the grains are pointed ... Pope Tewa Pueblo who led an all-Indian revolt in 1680 against the Spanish invaders in what is now the southwestern United States, driving them out of Santa Fe and temporarily restoring the old Pueblo way of life. pope (Latin papa, from Greek pappas, "father"), the title, since about the 9th century, of the bishop of Rome, the head of the Roman Catholic church. It was formerly given, especially from the 3rd to the 5th century, to any bishop and sometimes to simple priests as an ecclesiastical title expressing ... Pope, Albert Augustus American manufacturer. Pope, Alexander poet and satirist of the English Augustan period, best known for his poems An Essay on Criticism (1711), The Rape of the Lock (1712-14), The Dunciad (1728), and An Essay on Man (1733-34). He is one of the most epigrammatic of all English authors. Pope, John Union general in the American Civil War who was relieved of command following the Confederate triumph at the Second Battle of Bull Run. Pope, John R. American architect whose most important design was the National Gallery of Art (completed in 1941 and since 1978 known as the West Building of the National Gallery) in Washington, D.C. Popeye a pugnacious, wisecracking cartoon sailor who possesses superhuman strength after ingesting an always-handy can of spinach. Popeye was created by Elzie Crisler Segar, who in 1929 introduced the character into his existing newspaper cartoon strip, Thimble Theatre. Popish Plot (1678), in English history, a totally fictitious but widely believed plot in which it was alleged that Jesuits were planning the assassination of King Charles II in order to bring his Roman Catholic brother, the Duke of York (afterward King James II), to the throne. The allegations were fabricated by ... poplar any of several species of trees belonging to the genus Populus of the willow family (Salicaceae). The genus Populus contains at least 35 species of trees, along with a number of natural hybrids. The poplar species native to North America are divided into three main groups: the cottonwoods, the aspens, ... Pople, Sir John A. British mathematician and chemist who, with Walter Kohn, received the 1998 Nobel Prize for Chemistry for work on computational methodology in quantum chemistry. Pople's share of the prize recognized his development of computer-based methods of studying the quantum mechanics of molecules. poplin strong fabric produced by the rib variation of the plain weave and characterized by fine, closely spaced, crosswise ribs. It is made with heavier filling yarns and a greater number of warp yarns and is similar to broadcloth, which has even finer, more closely spaced ribs. Popocatepetl volcano on the border of the states of Mexico and Puebla, central Mexico. Popocatepetl lies along Mexico's Cordillera Neo-Volcanica at the southern edge of the Mexican Plateau, 10 miles (16 km) south of its twin, Iztaccihuatl, and 45 miles (72 km) southeast of Mexico City. The perpetually snowcapped, symmetrical cone ... Popol Vuh Maya document, an invaluable source of knowledge of ancient Mayan mythology and culture. Written in Quiche (a Guatemalan Mayan language) with Spanish letters by a Mayan author or authors between 1554 and 1558, it chronicles the creation of man, the actions of the gods, the origin and history of the ... Popolare an Italian political party organized in 1919 and inspired by Christian Socialist principles. The formation of the party marked the entrance of Roman Catholics, alienated since the government's seizure of papal lands in 1860-70, into Italian political life as an organized force. popolo (Italian: "people"), in the communes (city-states) of 13th-century Italy, a pressure group instituted to protect the interests of the commoners (actually, wealthy merchants and businessmen) against the nobility that up to then had exclusively controlled commune governments. It was one of a number of groups competing for power in the ... Popoloca Middle American Indians of southern Puebla state in central Mexico (not to be confused with the Popoluca of southern Mexico). The Popoloca language is most closely related to Ixcatec and Chocho and to Mazatec, all spoken nearby in northern Oaxaca state. The territory of the Popoloca is mostly flat and ... Popondetta town, eastern Papua New Guinea, southwestern Pacific Ocean. The town, on a tributary of the Girua River, was an Allied air base during World War II; the airfield is now used for civil aviation. In addition, Popondetta is the focus of a road network 300 miles (500 km) long, extending ... Popov, Aleksandr physicist and electrical engineer acclaimed in Russia as the inventor of radio. Evidently he built his first primitive radio receiver, a lightning detector (1895), without knowledge of the contemporary work of the Italian inventor Guglielmo Marconi. The genuineness and the value of Popov's successful experiments are not seriously doubted, but ... Popov, Alexey Dmitriyevich Soviet stage director and prominent exponent of Socialist realism whose monumental productions were notable for their meticulous attention to naturalistic detail. Popov, Oleg Konstantinovich member of the Moscow Circus, the most popular clown in the Soviet Union in the second half of the 20th century. Popova, Lyubov Sergeyevna one of the most distinctly individual artists of the Russian avant-garde, who excelled as a painter, graphic artist, theatrical set designer, textile designer, teacher, and art theorist. Popovich, Gregg American basketball coach who led the San Antonio Spurs to National Basketball Association (NBA) championships in 1999, 2003, 2005, and 2007. Popovich, Pavel Romanovich Soviet cosmonaut who piloted the Vostok 4 spacecraft, launched Aug. 12, 1962. He and Andriyan G. Nikolayev, who was launched a day earlier in Vostok 3, became the first two men to be in space simultaneously. The two spacecraft came within 5 km (3 miles) of each other. Vostok 4 ... Poppelmann, Matthaus Daniel German architect, best known for his design of the Zwinger, a building complex in Dresden that is considered one of the most successful realizations of the Baroque aesthetic. Popper, Sir Karl Austrian-born British philosopher of natural and social science who subscribed to antideterminist metaphysics, believing that knowledge evolves from experience of the mind. Poppins, Mary fictional character, the heroine of several children's books by P.L. Travers. poppy any of several ornamental flowering plants of the poppy family (Papaveraceae), especially species of the genus Papaver, which have lobed or dissected leaves, milky sap, often nodding buds on solitary stalks, and four- to six-petaled flowers with numerous stamens surrounding the ovary. The two sepals drop off as the petals ... poppy seed tiny dried seed of the opium poppy, used as food, food flavouring, and the source of poppy-seed oil. Poppy seeds have no narcotic properties, because the fluid contained in the bud that becomes opium is present only before the seeds are fully formed. The plant, Papaver somniferum, is an herbaceous ... Poprad city, eastern Slovakia. Located in the Poprad River valley between the Vysoke Tatra Mountains, the Nizke Tatry Mountains, and the Levocske Mountains, it is a centre for the valley's agricultural area, where potatoes, barley, oats, and flax are grown and sheep are reared. Lumbering is an important local industry. The ... popular art any dance, literature, music, theatre, or other art form intended to be received and appreciated by ordinary people in a literate, technologically advanced society dominated by urban culture. Popular art in the 20th century is usually dependent on such technologies of reproduction or distribution as television, printing, photography, digital compact ... popular front any coalition of working-class and middle-class parties united for the defense of democratic forms against a presumed Fascist assault. In the mid-1930s European Communist concern over the gains of Fascism, combined with a Soviet policy shift, led Communist parties to join with Socialist, liberal, and moderate parties in popular fronts ... Popular Front for the Liberation of Palestine organization providing an institutional framework for militant organizations associated with the Palestine Liberation Organization (PLO), notable for its Marxist-Leninist ideology and its hijacking of a number of aircraft between 1968 and 1974. Popular Mechanics monthly American magazine that publishes articles on home improvement and automobile maintenance and on new advancements in technology and science. Founded in 1902 by Henry H. Windsor, Popular Mechanics is one of the oldest magazines in the United States and consistently ranks among the most popular men's magazines in the ... Popular Movement for the Liberation of Angola Angolan political party. popular music any commercially oriented music principally intended to be received and appreciated by a wide audience, generally in literate, technologically advanced societies dominated by urban culture. Unlike traditional folk music, popular music is written by known individuals, usually professionals, and does not evolve through the process of oral transmission. Historically, popular ...