661 résultats pour "use"

• Édouard Manet I INTRODUCTION Manet: Tradition and Innovation French impressionist painter Édouard Manet shocked art audiences in Paris with Le déjeuner sur l'herbe (The Luncheon on the Grass; 1863, Musée d'Orsay, Paris), which depicts a nude woman at a woodland picnic.

  Le Déjeuner sur l’herbeLe Déjeuner sur l’herbe (Luncheon on the Grass) by Édouard Manet was painted in 1863. When it was first displayed, therough brushwork and undefined areas of color were as distressing to the public as the nude woman who was neither aclassical goddess nor a symbol in an allegory. Manet claimed that the real subject of the painting was light, and it was thatphilosophy that gave birth to impressionism.Bridgeman Art Library, London/New York After his father died in 1862, Manet...

• Isotope - chemistry.

  depends on the fact that when water undergoes electrolysis, the lighter hydrogen isotope tends to come off first, leaving behind a residue of water that is enriched inthe heavier isotope. D Gaseous Diffusion This and the electromagnetic method of separating isotopes of uranium afforded the first large-scale separation ever achieved. The problem of separating uranium-235from uranium-238 arose in 1940 after the demonstration of the susceptibility of the 235 isotope to fission by neutrons. Uranium...

• Ludwig van Beethoven I INTRODUCTION Ludwig van Beethoven (1770-1827), German composer, considered one of the greatest musicians of all time.

  dedication after learning that Napoleon had taken the title of emperor. Beethoven’s other instrumental works from the period of the Eroica also tend to expand the formal framework that he inherited from Haydn and Mozart. The Piano Sonata in C major op. 53 ( Waldstein ) and the Piano Sonata in F minor op. 57 ( Appassionata ), completed in 1804 and 1805 respectively, each employ bold contrasts in harmony, and they use a broadened formal plan, in which the meditative slow movements flow directly...

• Ludwig van Beethoven.

  dedication after learning that Napoleon had taken the title of emperor. Beethoven’s other instrumental works from the period of the Eroica also tend to expand the formal framework that he inherited from Haydn and Mozart. The Piano Sonata in C major op. 53 ( Waldstein ) and the Piano Sonata in F minor op. 57 ( Appassionata ), completed in 1804 and 1805 respectively, each employ bold contrasts in harmony, and they use a broadened formal plan, in which the meditative slow movements flow directly...

• Définition et usage: FATIGUER, verbe.

  mettre dans un état à contre coeur.ÉMILE ZOLA, Le Ventre de Paris, 1873, page 642.· [Au participe passé exprimant un état; avec un complément désignant le moyen ou la cause, introduit par une préposition de + substantif ou verbe à l'infinitif]Fatigué de ce plaisir usé, il rentra dans son hôtel de la rue de Lille (GUY DE MAUPASSANT, Contes et nouvelles, tome 1, Rencontre, 1884, page 937 ). Je suisfatigué de lire des livres qui me parlent de notre monde absurbe et criminel (JULIEN GREEN, Journal,...

• Agatha Christie

  b. Miss Jane Marple : Miss Jane Marple, another famous character of the work of Agatha Christie appeared in 1930 in the novel The Murder at the Vicarage "and continue his career until 1979, having starred in a dozen novels inwhich it solves the murders of the most interesting as those "train from 16h50" or "At Bertram's Hotel". It is already old when it was discovered in the first book but that did not stop carrying out its various investigations. She leads a quiet life of single hardened in...

• Leonardo da Vinci.

  Leonardo's stylistic innovations are even more apparent in The Last Supper, in which he represented a traditional theme in an entirely new way. Instead of showing the 12 apostles as individual figures, he grouped them in dynamic compositional units of three, framing the figure of Christ, who is isolated in the center of the picture.Seated before a pale distant landscape seen through a rectangular opening in the wall, Christ—who has just announced that one of those present will betrayhim—repres...

• Puppets I INTRODUCTION Punch and Judy Punch and Judy are characters in an English hand puppet show that first appeared in 1662.

  Rod puppets are controlled by rods attached to their limbs, heads, and bodies. Although the traditional rod puppets of Belgium and Sicily are worked from above, likemarionettes, most contemporary rod figures are operated from below. In theaters, rod puppeteers are frequently concealed from view by drapery or stage flats (fabric stretched across frames). On television and in films, rod and hand puppeteers usually hold their figures either above their heads or in front of their faces. In the lat...

• Mercury (planet) - astronomy.

  In 1991 powerful radio telescopes on Earth revealed signs of possible deposits of ice in the polar regions of Mercury. These ice deposits occur in areas where sunlightnever falls, such as crater bottoms near both of the planet’s poles. Similar ice deposits may have been found during the 1990s near the poles of the Moon by theClementine and Lunar Prospector spacecrafts. The ice on Mercury likely comes from comets or water-bearing meteorites that have hit Mercury over the planet’s historyup throug...

• Leonardo da Vinci I INTRODUCTION Leonardo da Vinci Leonardo da Vinci was known not only as a masterful painter but as an architect, sculptor, engineer, and scientist.

  and conservation program made use of the latest technology to reverse some of the damage. Although much of the original surface is gone, the majesty of thecomposition and the penetrating characterization of the figures give a fleeting vision of its vanished splendor. The Virgin of the RocksThe Virgin of the Rocks by Leonardo da Vinci was actually painted twice. The first version, done in 1485, wascommissioned to be an altarpiece but was evidently rejected. That painting now hangs in the Louvre,...

• Drawing I INTRODUCTION Drawing, delineation of form upon a surface, usually a plane, by means of lines and tints or shading.

  In the monasteries of medieval Europe, religious texts were inscribed on parchment, then embellished with initial letters, decorative borders, and miniature scenes. InRomanesque Europe, drawings served as models to be copied for such manuscript illumination and also as cartoons ( see Cartoon), or studies, for frescoes, sculpture, and other arts. Subjects were usually treated as stylized symbols of religious truths. This viewpoint was countered in the Gothic period; the change was reflected in th...

• Aksum.

  doctrine that Christ was both divine and human. The Council of Chalcedon condemned Monophysitism in 451, and since that time the Coptic Church has beenindependent of other Christian churches. After the Council of Chalcedon, priests who continued to teach Monophysitism were persecuted in the eastern Roman Empire, and many migrated to Aksum. The influxof priests, along with the support of the royal family, strengthened missionary efforts in Aksum. Many churches and monasteries were founded after 4...

• Zambia - country.

  The Livingstone Museum, at Livingstone, has a collection relating to the archaeology and natural history of southern Africa. The Institute for African Studies of theUniversity of Zambia publishes studies relating to central Africa. IV ECONOMY The wealth of Zambia is based largely on mining in the rich copper belt, and downturns in copper prices have severely damaging economic consequences. Someprocessing and manufacturing has been started since independence, and during the 1970s attempts were...

• Interstellar Matter - astronomy.

  silhouette of a cloud of dust. At other times, it blocks only a percentage of the light from behind it, a process known by astronomers as extinction . The long, narrow dark lanes in the Milky Way as seen from Earth are examples of extinction. The amount of extinction is different for different wavelengths of light. A2 Reddening Starlight that does not get completely absorbed by interstellar dust can still be changed by the dust’s effects. As light passes through less dense patches of interstel...

• Water - chemistry.

  flourides in drinking water has been found to reduce tooth decay. See Fluorine. Seawater contains, in addition to concentrated amounts of sodium chloride, or salt, many other soluble compounds, as the impure waters of rivers and streams areconstantly feeding the oceans. At the same time, pure water is continually lost by the process of evaporation, and as a result the proportion of the impurities that givethe oceans their saline character is increased. See Ocean and Oceanography. VII WATER...

• Frederick Douglass.

  proslavery document. In Britain and later in Rochester, however, Douglass met political abolitionists, who believed that it was possible to use the political system to fightslavery. They organized the antislavery Liberty Party, and called for the election of abolitionists to public office. Garrison believed the North should secede, if necessary,to free itself from the moral stain of slavery. In contrast, Douglass became convinced that this course of action would only abandon slaves to their mast...

• Frederick Douglass - USA History.

  proslavery document. In Britain and later in Rochester, however, Douglass met political abolitionists, who believed that it was possible to use the political system to fightslavery. They organized the antislavery Liberty Party, and called for the election of abolitionists to public office. Garrison believed the North should secede, if necessary,to free itself from the moral stain of slavery. In contrast, Douglass became convinced that this course of action would only abandon slaves to their mast...

• Domestic Violence.

  socialization teaches boys and girls a belief system that devalues women—especially unmarried women—and creates a sense of female responsibility for themaintenance of the family. Women who believe that the end of a relationship or of a marriage represents a personal failure are less likely to leave abusive relationships. V TREATMENT AND PREVENTION A variety of programs and services, both for victims and offenders, exist to treat and prevent domestic violence. Since 1964, more than 1800 shelters...

• Ludwig van Beethoven I INTRODUCTION Ludwig van Beethoven Ludwig van Beethoven is considered possibly the greatest Western composer of all time.

  the other hand, breaks up the opening theme into contrasting segments in different tempi, whereas customary practice called for stating the theme in its entirety at thebeginning of a movement. In the first movement of the Eroica Symphony, one of the major works from Beethoven’s middle period, he again sought ways to expand upon the prevailing musical forms. At that time, composers usually organized movements in three major parts. First, the exposition introduces the musical themes of the pie...

• Heat (physics) I INTRODUCTION Heat Loss from a House A thermograph shows the large amount of heat lost through a house's windows during winter.

  Theoretically, the molecules of a substance would exhibit no activity at the temperature termed absolute zero. See Molecule. III TEMPERATURE SCALES Five different temperature scales are in use today: the Celsius scale, known also as the Centigrade scale, the Fahrenheit scale, the Kelvin scale, the Rankine scale, andthe international thermodynamic temperature scale ( see Thermometer). The Celsius scale, with a freezing point of 0° C and a boiling point of 100° C, is widely used throughout the...

• Conceptual analysis

  Kant's important idea that conceptual truths can be either analytic a priori or synthetic a priori is effectively erased by Gottlob Frege in his Foundations of Arithmetic (1884). Frege's overriding philosophical aim is to put mathematical proof on a firm footing by reducing the truths of arithmetic to analytic truths of logic. In view of this, the proper goal of an analysis is the production of non-circular, explanatory, yet meaning-preserving general definitions of fundamental concepts -...

• Aristotle I INTRODUCTION Aristotle (384-322 BC), Greek philosopher and scientist, who shares with Plato and Socrates the distinction of being the most famous of ancient philosophers.

  succession of individuals. These processes are therefore intermediate between the changeless circles of the heavens and the simple linear movements of the terrestrialelements. The species form a scale from simple (worms and flies at the bottom) to complex (human beings at the top), but evolution is not possible. C Aristotelian Psychology For Aristotle, psychology was a study of the soul. Insisting that form (the essence, or unchanging characteristic element in an object) and matter (the commonu...

• Aristotle.

  succession of individuals. These processes are therefore intermediate between the changeless circles of the heavens and the simple linear movements of the terrestrialelements. The species form a scale from simple (worms and flies at the bottom) to complex (human beings at the top), but evolution is not possible. C Aristotelian Psychology For Aristotle, psychology was a study of the soul. Insisting that form (the essence, or unchanging characteristic element in an object) and matter (the commonu...

• Westerns I INTRODUCTION Gene Autry Known as the Singing Cowboy, Gene Autry was the star of nearly 100 Westerns during his career as an actor.

  James Fenimore CooperNineteenth-century American writer James Fenimore Cooper, famed for his adventure novels of American frontier life, wasalso an ardent social critic. Cooper wrote a series of five novels, known collectively as the Leather-Stocking Tales, in whichhe detailed the adventures of a fictional frontiersman named Natty Bumppo. In Bumppo, Cooper portrayed a man ofnature and a friend of the Native Americans. In addition to fiction, Cooper wrote several nonfiction works criticizingAmeri...

• Badminton.

  Once play has started, players tend to hit straight, low-flying shots called drives. When the shuttle remains close to the center of the court, net shots can be a goodoption. Net shots can be hard-hit or delicate. They are aimed at the front area of the opponent’s court, forcing the opponent to play the shot close to the net. If the opponent manages to return a net shot, the return must be hit high to clear the net. This gives the player a chance for a smash—the deadliest attacking stroke inbadm...

• Leukemia.

  leukemia, and normal or mildly decreased in chronic lymphocytic leukemia. Nearly all chronic leukemia patients have increased white cell counts. In chronic myelocyticleukemia, some of these leukemic white cells are capable of functioning as normal cells do by fighting infectious microbes. Hence, infection is no more common than in ahealthy individual. In chronic lymphocytic leukemia the blood contains large numbers of malignant lymphocytes that do not function normally. Normal lymphocytescoexist...

• Diseases of Animals.

  infected animal. It may also spread in milk or in garbage that contains contaminated meat. Typical symptoms include blisters that appear on the mouth and feet;animals may become lame when their hooves degenerate. Canine distemper is a highly contagious disease caused by the paramyxovirus, which is transmitted in discharges from the nose and eyes. Symptoms begin with fever,malaise, and nasal and ocular discharges and may progress to convulsions and other nervous system disorders. Parvoviruses aff...

• Martin Luther King, Jr.

  disorder that local white officials would be forced to end segregation to restore normal business relations. The strategy did not work in Albany. During months ofprotests, Albany’s police chief jailed hundreds of demonstrators without visible police violence. Eventually the protesters’ energy, and the money to bail out protesters,ran out. The strategy did work, however, in Birmingham, Alabama, when SCLC joined a local protest during the spring of 1963. The protest was led by SCLC member FredShut...

• Martin Luther King, Jr.

  disorder that local white officials would be forced to end segregation to restore normal business relations. The strategy did not work in Albany. During months ofprotests, Albany’s police chief jailed hundreds of demonstrators without visible police violence. Eventually the protesters’ energy, and the money to bail out protesters,ran out. The strategy did work, however, in Birmingham, Alabama, when SCLC joined a local protest during the spring of 1963. The protest was led by SCLC member FredShut...

• Impressionism (art) I INTRODUCTION Vegetable Garden at the Hermitage, Pontoise Vegetable Garden at the Hermitage, Pontoise (1879) was painted by the French artist Camille Pissarro.

  the Grass; 1863, Musée d’Orsay, Paris), which depicts a nude woman at a woodland picnic. To emphasize the woman’snakedness, Manet not only shows that she has recently disrobed (by painting her clothes in a heap nearby) but alsodepicts her male companions fully clothed. In addition, the woman stares directly and unabashedly at the viewer, makingus feel almost like voyeurs as we gaze back. Manet’s painting style–the flat figures, which look almost like cutouts, andloose brushwork–also bewildered a...

• Coronary Heart Disease.

  when a patient is at rest may indicate that the blood supply of the heart is not normal, and the ECG can often detect damage from a previous heart attack. In anexercise stress test, an ECG is recorded while a patient is performing physical activity such as walking on a treadmill or riding a stationary bicycle. As the intensity ofexercise increases, the doctor looks for specific changes in the ECG that indicate the heart is not getting enough oxygen. In cardiac catheterization, a long, thin, flex...

• Electronics.

  electronic circuits. The resistors are made from carbon mixtures, metal films, or resistance wire and have two connecting wires attached. Variable resistors, with anadjustable sliding contact arm, are often used to control volume on radios and television sets. E Capacitors Capacitors consist of two metal plates that are separated by an insulating material ( see Capacitor). If a battery is connected to both plates, an electric charge will flow for a short time and accumulate on each plate. If th...

• Cheetah - biology.

  animals such as zebras. Unlike most cats, cheetahs hunt during the day, when lions and hyenas that compete with them for prey are less likely to be active. Still,scientists in Tanzania have observed that cheetahs lose 10 to 13 percent of their kills to lions and hyenas. Alerted by the panic of a gazelle herd or by the circling ofvultures, lions and hyenas close in and easily drive the more timid cheetah away from a fresh kill. A cheetah usually stalks prey to within about 10 m (about 33 ft) and...

• Ecology.

  an input of nutrients exceeding the capability of the ecosystem to process them. Nutrients eroded and leached from agricultural lands, along with sewage and industrialwastes accumulated from urban areas, all drain into streams, rivers, lakes, and estuaries. These pollutants destroy plants and animals that cannot tolerate theirpresence or the changed environmental conditions caused by them; at the same time they favor a few organisms more tolerant to changed conditions. Thus,precipitation filled...

• Ecology - biology.

  an input of nutrients exceeding the capability of the ecosystem to process them. Nutrients eroded and leached from agricultural lands, along with sewage and industrialwastes accumulated from urban areas, all drain into streams, rivers, lakes, and estuaries. These pollutants destroy plants and animals that cannot tolerate theirpresence or the changed environmental conditions caused by them; at the same time they favor a few organisms more tolerant to changed conditions. Thus,precipitation filled...

• Sigmund Freud.

  reminiscences from the past and about her daydreams. Remarkably, as her narrative revisited memories from the past, which were associated with the onset of aparticular symptom, each symptom disappeared when accompanied by an emotional outburst. Breuer made use of this discovery to eliminate her symptoms one at atime. He called the treatment the cathartic technique (from the Greek katharsis meaning “purgation”). The treatment was time consuming and required considerable effort to reach dimly re...

• Iran-Iraq War - History.

  The Iranian offensives of 1982 set a pattern that continued for the rest of the war. Exploiting their superiority in numbers, Iran sent its Revolutionary Guard on theattack, supported by regular military forces. Outnumbered Iraqi forces inflicted heavy losses on the Iranians but ultimately fell back. As soon as the initial Iranian thrusthad exhausted itself, however, the Iraqi army exploited Iranian disorganization and lack of equipment to retake much of the lost territory. As the war continued,...

• Slovakia - country.

  The country is divided informally into the three regions of Western Slovakia, Central Slovakia, and Eastern Slovakia, corresponding to administrative divisions that wereabolished in 1989. Most of Slovakia’s 600,000 Hungarians live in the southern parts of Western and Central Slovakia, which served as the cultural center of Hungary forseveral centuries after Hungary proper was invaded by the Ottomans in the 16th century. The Ruthenian and Ukrainian minorities are concentrated in the northernregio...

• Air Pollution.

  Several pollutants attack the ozone layer. Chief among them is the class of chemicals known as chlorofluorocarbons (CFCs), formerly used as refrigerants (notably in airconditioners), as agents in several manufacturing processes, and as propellants in spray cans. CFC molecules are virtually indestructible until they reach thestratosphere. Here, intense ultraviolet radiation breaks the CFC molecules apart, releasing the chlorine atoms they contain. These chlorine atoms begin reacting withozone, br...

• Musical I INTRODUCTION George Gershwin American pianist, songwriter, and composer George Gershwin was one of the most important figures in popular song in the 1920s and 1930s.

  C Extravaganzas Another predecessor of musical comedy, the extravaganza, evolved soon after the American Civil War (1861-1865) from traditional English pantomime. Extravaganzaswere typically based on fairy tales and Mother Goose. They introduced some of the elements—songs, dances, and comedy combined with spectacular stage sets andeffects—that American musical comedy later became known for. The first and most famous extravaganza show was The Black Crook (1866), often described as America’s fi...

• Country Music I INTRODUCTION Willie Nelson Country singer and musician Willie Nelson gained national popularity during the 1970s for a string of country hits, including the 1978 hits "Mammas Don't Let Your Babies Grow Up to Be Cowboys" and "Georgia On My Mind.

  Singer and mandolin player Bill Monroe is known as the father of bluegrass music. A virtuoso mandolin player, Monroe combined traditional folk ballads and gospel songswith string-band music played at very fast tempos. Monroe, with his band The Blue Grass Boys, performed from the mid-1920s until Monroe’s death in 1996. Otherwell-known bluegrass performers include banjo player Earl Scruggs, who played with Monroe during the 1940s; the Osborne Brothers, a duo from Kentucky known forits work during...

• Extrasolar Planets - astronomy.

  When a planet passes in a front of the star it orbits—an event called a transit—it causes a small dip in the brightness of the star. Measuring the slight change in thebrightness can be used not only to directly detect a planet, but to determine its size and orbit. However, the planet needs to orbit in a plane that lies in a telescope’sline of sight on the star. Despite long odds, Earth-based telescopes have detected and studied a few exoplanets using this method. The first space telescope design...

• Protestantism.

  F England The Anglican Church became the established church in England when Henry VIII assumed (1534) the ecclesiastical authority over the English church that had previouslybeen exercised by the pope. Henry’s motive was to annul his marriage to Catherine of Aragón rather than to reform church doctrine, and he imposed severe lawsupholding the major tenets of medieval Catholicism. Under King Edward VI and Queen Elizabeth, however, the Anglican Church developed a distinctly Protestant creedthat w...

• Gravitation I INTRODUCTION Gravitation, the force of attraction between all objects that tends to pull them toward one another.

  precise observations possible, and Galileo was one of the first to use a telescope to study astronomy. In 1609 Galileo observed that moons orbited the planet Jupiter, afact that could not reasonably fit into an earth-centered model of the heavens. The new heliocentric theory changed scientists' views about the earth's place in the universe and opened the way for new ideas about the forces behind planetarymotion. However, it was not until the late 17th century that Isaac Newton developed a theory...

• Gravitation - astronomy.

  precise observations possible, and Galileo was one of the first to use a telescope to study astronomy. In 1609 Galileo observed that moons orbited the planet Jupiter, afact that could not reasonably fit into an earth-centered model of the heavens. The new heliocentric theory changed scientists' views about the earth's place in the universe and opened the way for new ideas about the forces behind planetarymotion. However, it was not until the late 17th century that Isaac Newton developed a theory...

• Chinese Literature I INTRODUCTION Chinese Literature, writings of the Chinese people, with a continuous history of more than 3,000 years.

  (Huang) River basin region in the north. The verses are in lines of four characters (or syllables) and use rhyme and alliteration (repetition of the initial letter). Confuciusquoted them in his works. Because he described them as “without depraved thoughts,” all the verses in the Shi jing have been treated as moral allegories. (4) The Li ji (Book of Ritual ) contains detailed discussions of the principles of conduct at court and in private ceremonies. Although the Han dynasty and later ruler...

• Chinese Literature I INTRODUCTION Chinese Literature, writings of the Chinese people, with a continuous history of more than 3,000 years.

  (Huang) River basin region in the north. The verses are in lines of four characters (or syllables) and use rhyme and alliteration (repetition of the initial letter). Confuciusquoted them in his works. Because he described them as “without depraved thoughts,” all the verses in the Shi jing have been treated as moral allegories. (4) The Li ji (Book of Ritual ) contains detailed discussions of the principles of conduct at court and in private ceremonies. Although the Han dynasty and later ruler...

• Atlantic Slave Trade.

  members of the planters’ society. Through most of the years of the Atlantic trade, prices for Africans remained favorable in relation to the price of the crops theyproduced. They were, thus, the best economic solution for plantation owners seeking inexpensive labor. The Atlantic slave trade began as a trickle in the 1440s and grew slowly through the 17th century. By 1700, 25,000 slaves, on average, were crossing the Atlantic everyyear. After 1700 the trade grew much more rapidly to a peak in the...

• Stock Exchange.

  A Example of a Trade In an example of a trade, an investor wanting to buy 200 shares—also known as two round lots, of 100 shares each—of IBM stock will telephone or e-mail the order to abrokerage firm. This communication is normally made to an individual called a stockbroker. The investor might desire to buy the shares at the market, or current, price.On the other hand, the investor may choose to pay no more than a set amount per share. The brokerage firm then contacts one of its floor brokers...

• Libya - country.

  junipers and mastic trees are found in the higher elevations. Only a few large mammals are found in Libya. Wildlife includes desert rodents, hyenas, gazelles, and wildcats. Eagles, hawks, and vultures are common. E Environmental Issues Libya has undertaken a number of major irrigation projects intended to ease the country’s water shortage. The most ambitious is the so-called Great Man-Made River(GMMR), a massive 25-year irrigation scheme begun in 1984. The GMMR is a vast water pipeline system d...