gas: Effusion: …temperature and is known as Graham’s law of effusion. It can be used to measure molecular weights, to measure the vapour pressure of a material with a low vapour pressure, or to calculate the rate of evaporation of molecules from a liquid or solid surface.

Rufus Wilmot Griswold: …with Edgar Allan Poe on Graham’s Magazine and succeeded him as assistant editor (1842–43).

Grahamstown, city, Eastern Cape province, South Africa. The city lies on the wooded slopes of the Suur Mountains near the source of the Kowie River. It was founded (1812) by Colonel John Graham as a frontier garrison post near Xhosa territory, and British settlers arrived in 1820. The city contains

Merchandise Mart: History: …the Chicago architectural firm of Graham, Anderson, Probst & White under chief architect Alfred P. Shaw. Construction began on Aug. 16, 1928, and the building opened on May 5, 1930. The Mart housed Field’s wholesale showrooms and manufacturing facilities and leased floor space to retail tenants. Amenities included restaurants, parking…

Drake is a Canadian rap musician who first gained fame as an actor on the acclaimed TV teenage drama series Degrassi: The Next Generation and went on to a successful and influential music career. His trademark mixture of singing and lyrical rapping and of braggadocio juxtaposed with raw

rock festival: Origins: …Francisco Mime Troupe organized by Bill Graham. Because by the mid-1960s most rock performers were self-contained acts, these festivals differed from earlier phenomena such as Dick Clark’s Cavalcade of Stars, which generally presented a series of solo singers or vocal groups who worked with a single backing band.

Billy Graham was an American evangelist whose large-scale preaching missions, known as crusades, and friendship with numerous U.S. presidents brought him to international prominence. The son of a prosperous dairy farmer, Billy Graham grew up in rural North Carolina. In 1934, while attending a

Bob Graham is an Australian author, illustrator, and creator of picture books for children. Graham received several awards for his illustrations and books. Graham was born in 1942 in Sydney and grew up in Beverly Hills, a suburb of Sydney, with his parents, sister, grandmother, and a pet dog named

Willis Tower: …and construction of the tower; Bruce Graham served as architect and Fazlur Khan as structural engineer.

Catharine Macaulay was a British historian and radical political writer. She was privately educated, and her readings in Greek and Roman history inculcated in her an enthusiasm for libertarian and republican ideals. Following her marriage to the Scottish physician George Macaulay in 1760, she began

Dan Graham was an American artist whose work addressed such notions as the dual role of the viewer (or audience) as both perceiver and perceived. To that end, he employed performance art, mirrors, video art, architecture, and other media to examine aspects of the human gaze and the individual’s

Elizabeth Arden was a Canadian-born American businesswoman who developed a successful line of cosmetics and a chain of beauty salons and spas. Florence Graham briefly pursued nurse’s training, worked as a secretary, and held various other jobs before moving from Canada to New York City about 1908.

George Graham was an eminent English watchmaker and scientific instrument maker. Graham was apprenticed to a London watchmaker and came to the notice of the renowned watchmaker Thomas Tompion. After completing his apprenticeship, Graham joined Tompion’s business, becoming his partner and successor

Isabella Marshall Graham was a Scottish-American educator and philanthropist who was principal in founding one of the earliest relief societies in the United States to provide assistance to the poor. Isabella Marshall grew up in Elderslie, near Paisley, Scotland, in a religious family and received

James Graham, 5th Earl and 1st Marquess of Montrose was a Scottish general who won a series of spectacular victories in Scotland for King Charles I of Great Britain during the English Civil Wars. Montrose inherited the earldom of Montrose from his father in 1626 and was educated at St. Andrews

Willem de Kooning: Early life and work: …artist, connoisseur, and art critic John Graham and the painter Arshile Gorky. Gorky became one of de Kooning’s closest friends.

Jorie Graham is an American poet whose abstract intellectual verse is known for its visual imagery, complex metaphors, and philosophical content. Graham grew up in France and Italy. After attending the Sorbonne, she continued her education at New York University (B.F.A., 1973) and at the University

Katharine Graham was an American business executive who owned and published various news publications, most notably The Washington Post, which she transformed into one of the leading newspapers in the United States. She was especially known for supporting the Post’s investigation into the Watergate

Sly and the Family Stone: Graham, who had pioneered the funk bass style of “thumping” and “plucking,” left the band in 1972 to form his own successful group, Graham Central Station, and later to pursue a solo singing career. With a new bassist, Rusty Allen, Sly produced his final gold…

Lindsey Graham is an American politician who was elected as a Republican to the U.S. Senate in 2002 and began representing South Carolina the following year. He previously served in the U.S. House of Representatives (1995–2003). Graham’s parents owned a pool hall, bar, and liquor store in Central,

Lindsey Graham is an American politician who was elected as a Republican to the U.S. Senate in 2002 and began representing South Carolina the following year. He previously served in the U.S. House of Representatives (1995–2003). Graham’s parents owned a pool hall, bar, and liquor store in Central,

Martha Graham was an influential American dancer, teacher, and choreographer of modern dance whose ballets and other works were intended to “reveal the inner man.” Over more than 50 years she created more than 180 works, from solos to large-scale works, in most of which she herself danced. She gave

Otto Graham was an American collegiate and professional gridiron football player and coach best remembered as the quarterback of the Cleveland Browns during a 10-year period in which they won 105 games, lost 17, and tied 5 in regular-season play and won 7 of 10 championship games. Graham was an

Otto Graham was an American collegiate and professional gridiron football player and coach best remembered as the quarterback of the Cleveland Browns during a 10-year period in which they won 105 games, lost 17, and tied 5 in regular-season play and won 7 of 10 championship games. Graham was an

The Washington Post: …paper over to his son-in-law, Philip L. Graham, in 1946, and Graham continued to expand and refine it.

Bob Graham is an Australian author, illustrator, and creator of picture books for children. Graham received several awards for his illustrations and books. Graham was born in 1942 in Sydney and grew up in Beverly Hills, a suburb of Sydney, with his parents, sister, grandmother, and a pet dog named

Sir James Graham, 2nd Baronet was a British politician, confidant and adviser of prime minister Sir Robert Peel, and the leading Peelite in the House of Commons after Peel’s death (1850). Graham was a member of the House of Commons from 1826 until his death. He was originally an advanced liberal

Sylvester Graham was an American clergyman whose advocacy of a health regimen emphasizing temperance and vegetarianism found lasting expression in the graham cracker, a household commodity in which lay the origin of the modern breakfast-cereal industry. After working at a variety of odd jobs,

Thomas Graham was a British chemist often referred to as “the father of colloid chemistry.” Educated in Scotland, Graham persisted in becoming a chemist, though his father disapproved and withdrew his support. He then made his living by writing and teaching. He was a professor at a school in

Himalayas: Study and exploration: …the 1880s with the Briton W.W. Graham, who claimed to have climbed several peaks in 1883. Though his reports were received with skepticism, they did spark interest in the Himalayas among other European climbers. In the early 20th century the number of mountaineering expeditions increased markedly to the Karakoram Range…

Billy Graham was an American evangelist whose large-scale preaching missions, known as crusades, and friendship with numerous U.S. presidents brought him to international prominence. The son of a prosperous dairy farmer, Billy Graham grew up in rural North Carolina. In 1934, while attending a

Winston Graham was an English author whose mysteries and historical novels feature suspenseful plots that often hinge on the discovery of past events. The subjects of Graham’s crime stories are usually ordinary people and amateur detectives who face moral quandaries. The title character and

Winston Graham was an English author whose mysteries and historical novels feature suspenseful plots that often hinge on the discovery of past events. The subjects of Graham’s crime stories are usually ordinary people and amateur detectives who face moral quandaries. The title character and

The Big Heat: …enjoys considerable screen chemistry with Gloria Grahame as the ill-treated mob moll. Lee Marvin makes an early screen appearance as a sadistic gangster.

Kenneth Grahame was a British author of The Wind in the Willows (1908), one of the classics of children’s literature. Its animal characters—principally Mole, Rat, Badger, and Toad—combine captivating human traits with authentic animal habits. It is a story that adults have enjoyed as much as

Claude Grahame-White was an English aviator who played a seminal role in early British aviation. (Read Orville Wright’s 1929 biography of his brother, Wilbur.) Educated at Bedford in engineering, Grahame-White owned one of the first gasoline-driven motorcars in England and worked at a

asphaltite: …glance pitch (or manjak), and grahamite. These substances differ from one another basically in terms of specific gravity and temperature at which they soften. Gilsonite occurs chiefly along the Colorado–Utah border, U.S.; glance pitch on Barbados and in Colombia; and grahamite in Cuba and Mexico, as well as in West…

Grahamstown, city, Eastern Cape province, South Africa. The city lies on the wooded slopes of the Suur Mountains near the source of the Kowie River. It was founded (1812) by Colonel John Graham as a frontier garrison post near Xhosa territory, and British settlers arrived in 1820. The city contains

Grahamstown, city, Eastern Cape province, South Africa. The city lies on the wooded slopes of the Suur Mountains near the source of the Kowie River. It was founded (1812) by Colonel John Graham as a frontier garrison post near Xhosa territory, and British settlers arrived in 1820. The city contains

Lucile Grahn was a ballerina, ballet mistress, and choreographer who was the first Danish ballerina to attain international renown. Grahn received her training at the Royal Danish Theatre School in Copenhagen, where her principal teacher was the ballet master August Bournonville. She made her

Lucile Grahn was a ballerina, ballet mistress, and choreographer who was the first Danish ballerina to attain international renown. Grahn received her training at the Royal Danish Theatre School in Copenhagen, where her principal teacher was the ballet master August Bournonville. She made her

Perseus: … and Athena, Perseus pressed the Graiae, sisters of the Gorgons, into helping him by seizing the one eye and one tooth that the sisters shared and not returning them until they provided him with winged sandals (which enabled him to fly), the cap of Hades (which conferred invisibility), a curved…

Graian Alps, northern segment of the Western Alps along the French-Italian border, bounded by Mont Cenis and the Cottian Alps (southwest), the Isère and Arc valleys (west), the Little St. Bernard Pass (north), and the Dora Baltea River valley (northeast). Many of the peaks are glacier-covered and

Graian Alps, northern segment of the Western Alps along the French-Italian border, bounded by Mont Cenis and the Cottian Alps (southwest), the Isère and Arc valleys (west), the Little St. Bernard Pass (north), and the Dora Baltea River valley (northeast). Many of the peaks are glacier-covered and

Graian Alps, northern segment of the Western Alps along the French-Italian border, bounded by Mont Cenis and the Cottian Alps (southwest), the Isère and Arc valleys (west), the Little St. Bernard Pass (north), and the Dora Baltea River valley (northeast). Many of the peaks are glacier-covered and

Gravity Recovery and Interior Laboratory (GRAIL), U.S. space mission that consisted of two spacecraft, Ebb and Flow, designed to map the Moon’s gravitational field. GRAIL was launched from Cape Canaveral, Florida, on September 10, 2011. To conserve fuel, the spacecraft traveled very slowly, taking

Holy Grail, object sought by the knights of Arthurian legend as part of a quest that, particularly from the 13th century, had Christian meaning. The term grail evidently denoted a wide-mouthed or shallow vessel, though its precise etymology remains uncertain. The legend of the Grail possibly was

rocket and missile system: Passive: …Vietnam War, with the Soviet SA-7 Grail playing a major role in neutralizing the South Vietnamese Air Force in the final communist offensive in 1975. Ten years later the U.S. Stinger and British Blowpipe proved effective against Soviet aircraft and helicopters in Afghanistan, as did the U.S. Redeye in Central…

Jean III de Grailly, lord de Buch was a vassal in Gascony under King Edward III of England and his son Edward, the Black Prince. Viewed as the ideal of 14th-century chivalry, Jean was extolled by the contemporary chronicler Jean Froissart for his valour, courage, and loyalty. Jean’s

cereal, any grass (family Poaceae) yielding starchy seeds suitable for food. Most grains have similar dietary properties; they are rich in carbohydrates but comparatively low in protein and naturally deficient in calcium and vitamin A. Breads, especially those made with refined flours, are usually

caryopsis, specialized type of dry, one-seeded fruit (achene) characteristic of grasses, in which the ovary wall is united with the seed coat, making it difficult to separate the two except by special milling processes. All the cereal grains except buckwheat have

grain, in metallurgy, any of the crystallites (small crystals or grains) of varying, randomly distributed, small sizes that compose a solid metal. Randomly oriented, the grains contact each other at surfaces called grain boundaries. The structure and size of the grains determine important physical

meat processing: Tenderness: …number of factors including the grain of the meat, the amount of connective tissue, and the amount of fat.

rock: Texture: …shape, and arrangement of the grains (for sedimentary rocks) or crystals (for igneous and metamorphic rocks). Also of importance are the rock’s extent of homogeneity (i.e., uniformity of composition throughout) and the degree of isotropy. The latter is the extent to which the bulk structure and composition are the same…

grain, unit of weight equal to 0.065 gram, or 17,000 pound avoirdupois. One of the earliest units of common measure and the smallest, it is a uniform unit in the avoirdupois, apothecaries’, and troy systems. The ancient grain, varying from one culture to the next, was defined as the weight of a

ethanol, a member of a class of organic compounds that are given the general name alcohols; its molecular formula is C2H5OH. Ethanol is an important industrial chemical; it is used as a solvent, in the synthesis of other organic chemicals, and as an additive to automotive gasoline (forming a

ice in lakes and rivers: Thinning and rotting: …ice, melting begins at the grain boundaries because the melting point there is depressed by the presence of impurities that have been concentrated between crystal grains during the freezing process. Rotting may begin at the bottom or at the top, depending on the particular thermal conditions, but eventually the ice…

capacitor dielectric and piezoelectric ceramics: Barrier-layer capacitors: In grain-boundary BL capacitors slow cooling in air or oxygen allows oxygen to diffuse into the grain boundaries and reoxidize thin layers adjacent to the boundaries. Oxidizing agents such as bismuth and copper oxides also can be incorporated into the electrode paste to diffuse along grain…

Grain Coast, section of the western coast of the Gulf of Guinea, in Africa, extending approximately from Cape Mesurado to Cape Palmas—in present-day Liberia—on either side of the Cestos (Cess) River. It was primarily a sphere of Afro-Portuguese trade. The name of the coast originates in the early

combine, complex farm machine that both cuts and threshes grains and certain other crops. Combines are used in the harvesting and cleaning of cereals such as wheat, barley, corn (maize), oats, rice, rye, and sorghum, as well as a number of non-grain crops, including flax, rapeseed, soybeans, and

grain drill, machine for planting seed at a controlled depth and in specified amounts. The earliest known version, invented in Mesopotamia by 2000 bc, consisted of a wooden plow equipped with a seed hopper and a tube that conveyed the seed to the furrow. By the 17th century, metering systems were

grain elevator, storage building for grain, usually a tall frame, metal, or concrete structure with a compartmented interior; also, the device for loading grain into a building. Early elevators were powered by animals; modern facilities use internal-combustion engines or electric motors. One

commodities fraud: Early futures trading: Congress enacted the Grain Futures Act, and in 1936 Congress passed further legislation to prevent manipulation and fraud in the futures market.

Marguerite Taos Amrouche: Le Grain magique (1966; “The Magic Grain”)—a collection of legends, short stories, songs, poems, and proverbs from the Kabyle, translated by her from Berber into French—is perhaps her best-known work. She recorded several phonograph albums and produced a number of programs for French radio and…

grain mill, structure for grinding cereal. Waterwheels were first exploited for such tasks. Geared mills turning grindstones (see gear) were used in the Roman Empire, but their fullest development occurred in medieval Europe, in, for example, the great grain mill near Arles, France, which, with its

mite: Grain mites (Glycyphagidae) not only damage stored products but also cause skin irritations in those who handle such products. Itch mites burrow into the layers of the skin of humans, as well as into the hides of dogs, pigs, sheep, and goats, causing injury. Scab…

African literature: English: In A Grain of Wheat (1967) he tells the story of Mugo, alone and alienated, farming after having played a role in the Mau Mau rebellion; though he has considered himself the Moses of his people, he has a terrible secret. As Mugo’s story unfolds, the…

Obed Hussey: inventor of a full-sized grain reaper that was in wide use throughout Illinois, Maryland, New York, and Pennsylvania until Cyrus Hall McCormick’s reaper captured the market.

sedimentary rock: Texture: …textures, particularly grain-size distribution and grain shape (angularity and sphericity) has been described above. The information that results from textural analyses is especially useful in identifying sandstone depositional environments. Dune sands in all parts of the world, for example, tend to be fine-sand-size (clast diameters from 14 to 18 millimetre)…

grain size scale, in sedimentology, division of a continuous range of particle sizes into a series of discrete groups. Several such scales have been devised for the purpose of standardizing terms and providing a basis for statistical analysis. On most scales, the finest particles are designated

grain weevil, (species Sitophilus granarius), insect of the family Curculionidae (order Coleoptera), a common pest of stored grain. This small brown weevil is about 3 to 4 mm (0.1 inch) long. The female bores a hole in an individual cereal grain and implants an egg in it. The fleshy white larva

Canada: The Canadian Shield: …surface into a type of rock-knob, or grained, landscape, with the hollows between the knobs or the troughs between the ridges occupied by enormous numbers of lakes. In other areas the glaciers deposited till or moraine on the surface and in still others left gigantic fields of erratics (boulders and…

Percy Grainger: In 1935 he founded the Grainger Museum at Melbourne, a museum of Australian music where much of his own work and some of his artifacts are preserved.

Percy Grainger was an Australian-born American composer, pianist, and conductor who was also known for his work in collecting folk music. Grainger first appeared publicly as a pianist at age 10. He was educated at home in Melbourne by his mother. He studied piano with Louis Pabst in that city and

Nicol David: …in a loss to American Natalie Grainger in the final of the 2009 Kuala Lumpur Open. David secured seven more titles in 2009, including her fourth World Open; she defended that championship in 2010 as part of a nine-title campaign. In the following season she earned seven more championship titles,…

Percy Grainger was an Australian-born American composer, pianist, and conductor who was also known for his work in collecting folk music. Grainger first appeared publicly as a pianist at age 10. He was educated at home in Melbourne by his mother. He studied piano with Louis Pabst in that city and

salt: Use of artificial heat: …quantity is made in so-called open crystallizers or grainers that produce a type of crystal preferred for use in some of the food industries. The brine, natural or artificial, is first pumped into settling tanks, where calcium and magnesium compounds may be removed by chemical treatment. In grainer operations the…

grains of paradise, pungent seeds of Aframomum melegueta, a reedlike plant of the family Zingiberaceae. Grains of paradise have long been used as a spice and traditionally as a medicine. The wine known as hippocras was flavoured with them and with ginger and cinnamon. The plant is native to

mudlark, bird of the family Grallinidae

Grallinidae, bird family (order Passeriformes) that includes the mudlark, apostle bird, and white-winged chough. The four species, generally restricted to Australia and New Zealand, are 19 to 50 cm (7.5 to 20 inches) long. They are sometimes called mudnest builders, because high in a tree they make

gram (g), unit of mass or weight that is used especially in the centimetre-gram-second system of measurement (see International System of Units). The gram is very nearly equal (it was originally intended to be equal; see metric system) to the mass of one cubic centimetre of pure water at 4 °C (39.2

mole, in chemistry, a standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other specified particles. The mole designates an extremely large number of units, 6.02214076 × 1023. The General Conference on Weights and Measures defined the mole as

mole, in chemistry, a standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other specified particles. The mole designates an extremely large number of units, 6.02214076 × 1023. The General Conference on Weights and Measures defined the mole as

mole, in chemistry, a standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other specified particles. The mole designates an extremely large number of units, 6.02214076 × 1023. The General Conference on Weights and Measures defined the mole as

Gram stain, a widely used microbiological staining technique that greatly aids in the identification and characterization of bacteria. It was devised by a Danish physician, Hans Christian Gram, in 1884. The Gram reaction reflects fundamental differences in the biochemical and structural properties

Gram stain: …devised by a Danish physician, Hans Christian Gram, in 1884. The Gram reaction reflects fundamental differences in the biochemical and structural properties of bacteria. A slide containing a heat-fixed smear of bacterial cells is treated with crystal-violet stain (a basic dye), during which the cells turn purple. The slide is…

Dulong–Petit law: gram-atomic heat capacity (specific heat times atomic weight) of an element is a constant; that is, it is the same for all solid elements, about six calories per gram atom. The law was formulated (1819) on the basis of observations by the French chemist Pierre-Louis…

calorie, a unit of energy or heat variously defined. The calorie was originally defined as the amount of heat required at a pressure of 1 standard atmosphere to raise the temperature of 1 gram of water 1° Celsius. Since 1925 this calorie has been defined in terms of the joule, the definition since

Gram-negative bacterium, any of various types of bacteria that are characterized by having a thin peptidoglycan cell wall surrounded by an outer membrane containing lipopolysaccharide that is in turn enveloped by a capsule. These bacteria are so-named because of their reaction to the Gram stain, a

Gram-negative bacterium, any of various types of bacteria that are characterized by having a thin peptidoglycan cell wall surrounded by an outer membrane containing lipopolysaccharide that is in turn enveloped by a capsule. These bacteria are so-named because of their reaction to the Gram stain, a

Gram-positive bacterium, any of various types of bacteria that are characterized by having a thick peptidoglycan cell wall and by the absence of an outer membrane composed of lipopolysaccharide. Gram-positive bacteria are named because of their reaction to the Gram stain, a microbiological staining

grama grass, (genus Bouteloua), genus of about 50 species of annual or perennial grasses in the family Poaceae. Grama grasses are native mostly to North America, with a few species in Central and South America. The plants are important forage grasses, and several occasionally are grown as

South Asian arts: Precursors of the medieval system: …based on musical entities called grama-ragas, of which seven are mentioned in the 7th-century Kutimiyamalai rock inscription in Tamil Nadu state. Although the word grama-raga does not occur in the Natya-shastra, the names applied to the individual grama-ragas are all mentioned. Two of them, sadjagrama-raga and madhyamagrama-raga, are obviously related…

grāmadevatā, (Sanskrit: “village deity”), type of folk deity widely worshiped in rural India. The grāmadevatās, often female figures, may have originated as agricultural deities; in South India and elsewhere they continue to be propitiated with animal sacrifices as a way of warding off and removing

Romance languages: The standardization of the Romance languages: …appearance of Antonio de Nebrija’s Gramática Castellana (“Grammar of the Castilian Language”), which argues the need for an ennobled language fit for imperial exportation. In 16th-century France, with the Renaissance backed by the Reformation and the advent of printing, French really assumed the remaining scholarly, scientific, and religious functions of…

Andrés Bello: …the most important is his Gramática de la lengua castellana (1847; “Grammar of the Spanish Language”), long the leading authority in its field.

Grambling State University, public, coeducational institution of higher learning in Grambling, Louisiana, U.S. A historically African-American university, it comprises colleges of basic studies, business, education, liberal arts, and science and technology and the Earl Lester Cole Honors College.

Grambling State University, public, coeducational institution of higher learning in Grambling, Louisiana, U.S. A historically African-American university, it comprises colleges of basic studies, business, education, liberal arts, and science and technology and the Earl Lester Cole Honors College.

Vinoba Bhave: Later, however, he encouraged gramdan—i.e., the system whereby villagers pooled their land, after which the land was reorganized under a cooperative system.

Grameen Bank, Bangladeshi bank founded by economist Muhammad Yunus as a means of providing small loans to poor individuals (see microcredit). In 2006 Grameen and Yunus were awarded the Nobel Prize for Peace. The Grameen (Bengali: “Rural”) model, devised by Yunus in 1976, is based on groups of five