270 résultats pour "ancient"
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Coins and Coin Collecting.
U.S. coins dates from 1909, when the first Lincoln Cents appeared during the centennial of Abraham Lincoln’s birth. George Washington’s profile was used on thequarter-dollar of 1932, a coin originally intended as a one-year commemorative to honor the 200th anniversary of his birth. The design quickly became so popular thatit was retained for regular-issue quarters and is still being used today. Thomas Jefferson, Franklin D. Roosevelt, John F. Kennedy, and Dwight D. Eisenhower are theother Americ...
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Gemstones.
In the late 1960s a method was developed for “growing” diamonds by heating a diamond particle to a high temperature and subjecting it to methane gas. The gasdecomposes into carbon atoms, which adhere to the diamond crystal. The crystal structure of the enlarged diamond is identical to that of a natural diamond. Diamondsof about 1 carat (200 mg or 0.007 oz) have been produced by this method, but their cost is still considerably higher than that of naturally occurring diamonds. Sapphires are made...
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Poliomyelitis.
Physical therapy helps patients with paralytic polio stretch and move affected muscles. This movement minimizes the atrophy, or shrinkage, of affected muscles andlimbs and builds strength. Exercises can also retrain working muscles to compensate for other muscles that have permanently lost the ability to move. Rehabilitativetherapy trains patients to use braces, crutches, and other devices that provide support and aid mobility. V PREVENTION OF POLIO Immunization with polio vaccine is the best w...
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Invertebrate - biology.
animals with a five-pointed design. They live in the sea and move with the help of tiny fluid-filled feet—another feature found nowhere else in the animal world. Zoologists recognize several different groups of worms. The phylum known as flatworms contains the simplest animals possessing heads. Nerves and sense organs areconcentrated in the head. Most flatworms are paper-thin and live in a variety of wet or damp habitats, including the digestive systems of other animals. Roundwormsrepresent anot...
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Invertebrate - biology.
animals with a five-pointed design. They live in the sea and move with the help of tiny fluid-filled feet—another feature found nowhere else in the animal world. Zoologists recognize several different groups of worms. The phylum known as flatworms contains the simplest animals possessing heads. Nerves and sense organs areconcentrated in the head. Most flatworms are paper-thin and live in a variety of wet or damp habitats, including the digestive systems of other animals. Roundwormsrepresent anot...
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Carbon - chemistry.
Graphite is black and slippery and conducts electricity. In graphite, the atoms form planar, or flat, layers. Each layer is made up of rings containing six carbon atoms.The rings are linked to each other in a structure that resembles the hexagonal mesh of chicken wire. Each atom has three sigma bonds (with 120° between any two ofthe bonds) and belongs to three neighboring rings. The fourth electron of each atom becomes part of an extensive pi bond system. Graphite conducts electricity,because th...
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Kyrgyzstan - country.
are Bishkek, the capital, located on the Chu River in the far north; and Osh, located in the Fergana Valley. A Ethnic Groups Ethnic Kyrgyz make up about 65 percent of the population of Kyrgyzstan. Uzbeks, who live primarily in the Fergana Valley, constitute about 14 percent of thepopulation. Russians, who live principally in Bishkek and other industrial centers, make up about 13 percent of the population. Other ethnic groups include Hui (ChineseMuslims, also known as Dungans), Ukrainians, Uygur...
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Toys.
I
INTRODUCTION
Toys, objects that serve as playthings for children. Although the
clay. These readily available elements were also used to make more elaborate toys as human society advanced. Archaeologists have found primitive, handmade toys such as wooden or cloth dolls, clay marbles, and terracotta figures that date back thousands of years. In ancientEgypt, Greece, and Rome, people placed dolls or clay figures in the graves or tombs of children for them to play with in the afterlife. The yo-yo may seem like a 20th-century fad, but it actually dates back at least 2,500 years...
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Georgia (country) - country.
1917. During the subsequent Soviet period, religious practice was strongly discouraged because the Soviet state was officially atheistic; however, the GeorgianOrthodox Church was allowed to function openly. Orthodox Christianity is the religion of about 58 percent of the Georgian population. Muslims represent about 19 percent of the country’s population, with ethnicAzerbaijanis, Kurds, and Ajars comprising the principal Muslim groups. Ajars are ethnic Georgians who converted to Islam in the 17th...
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Sudan - country.
B Principal Cities and Political Divisions The principal city is Khartoum, the capital; other major cities include Omdurman and Khartoum North, major industrial centers, and Port Sudan, a seaport on the RedSea. Sudan is divided into 26 states. C Religion and Language About 70 percent of the people of Sudan are Muslims, some 15 percent are Christians, and most of the remainder follow traditional religions. The people of northernSudan are predominantly Sunni Muslims (Sunni Islam). Most of the pe...
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Human Disease.
disease can be transmitted through food infected with mutated proteins. B Spread of Infectious Disease Some pathogens are spread from one person to another by direct contact. They leave the first person through body openings, mucous membranes, and skin wounds,and they enter the second person through similar channels. For example, the viruses that cause respiratory diseases such as influenza and the common cold are spreadin moisture droplets when an infected person coughs or sneezes. A hand that...
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History of Chemistry - chemistry.
even better distillation apparatus than the Arabs had made and to condense the more volatile products of distillation. Among the important products obtained in thisway were alcohol and the mineral acids: nitric, aqua regia (a mixture of nitric and hydrochloric), sulfuric, and hydrochloric. Many new reactions could be carried outusing these powerful reagents. Word of the Chinese discovery of nitrates and the manufacture of gunpowder also came to the West through the Arabs. The Chinese atfirst use...
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Turkmenistan - country.
A Ethnic Groups With Turkmens constituting 77 percent of the population, Turkmenistan is the most ethnically homogeneous of the Central Asian republics. Uzbeks make up the largestminority group, with about 9 percent of the population. Other ethnic groups include Russians, Kazakhs, Tatars, Ukrainians, Azeris (ethnic Azerbaijanis), Armenians, andBaluch. In 1993 a bilateral treaty between Turkmenistan and Russia granted dual citizenship to Russians in the republic. At the 1995 census Russians cons...
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The rime of the ancient mariner
tVisual imagery In my part, I want to speak about waht represents the ocean. he Rime of the Ancient Mariner is set in a time when, once you crossed a certain point in your ship, you could expect not to see other people for a long, long time. The ocean represents the mysteries of the human soul. When the Mariner pollutes his soul by killing the albatross, it's not a surprise to see that the ocean becomes polluted with slime and horrible creatures. Moreover, the imagery of the vast, vacant...
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Africa - history.
Africa’s other major mountainous regions occur at the northern and southern fringes of the continent. The Atlas Mountains, a system of high ranges, extend for 2,200 km(1,400 mi) across Morocco, Algeria, and Tunisia, roughly parallel to the northern coast. These ranges enclose a number of broad inland basins and plateaus. In the west, theHigh (or Grand) Atlas contains Toubkal (4,165 m/ 13,665 ft), the highest peak of the system. Toward the east, the Atlas consists of two parallel ranges: the Tell...
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echidnA
Mardonios, commandant l’armée perse, envahit de nouveau l’Attique et incendie Athènes, les Spartiates retardent le plus possible leur intervention, dans l’espoir de terminer un mur qui barre l’isthme péloponnésien. Puis, ils envoient finalement une armée qui combat au côté des alliés dans la bataille victorieuse de Platée. Dès 478, les Spartiates se retirent de la coalition et se recentrent sur les affaires strictement péloponnésienne, poussés par les alliés qui se plaignent de la cond...
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Aidan DODSON
1981, « Nefertiti's Regality : a Comment », JEA 67, 179-180.
1982, «Gaston Maspero andtheBirth ofthe Egypt Exploration Fund(1881-3) »,JEA 68,299-317. 1985, Flinders Petrie.ALife inArchaeology, Londres. Comte DUMESNIL DUBUISSON 1969, «Le décor asiatique ducouteau deGebel el-Arak »,BIFAO 68,63-84. Françoise DUNAND 1980, «Fête, tradition, propagande: lescérémonies enl'honneur deBérénice, filledePtolémée III,en 238 a.C. », dans LivreduCentenaire, MIFAO104,287-301. 1983, «Culte royaletculte impérial enÉgypte. Continuités etruptures »,Aegyptiaca Treverensia 2,4...
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AcheLouspALAmedes
nation. Il en découle un deuxième aspect de la contrainte extérieure : les marges de manœuvres des politiques économiques sont écoule réduites. Prenons l'exemple d'un gouvernement qui cherche à réduire le chômage en relançant l'économie par une augmentation des dépenses publiques et une reprise de la consommation et de l'investissement grâce à une baisse des ntation taux d'intérêt. On peut craindre que sa politique échoue. En effet, la relance risque d'être inflationniste, la demande...
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DAEDALus
La crise économique touche toutes les entreprises, aussi bien celles de la sphère financière que celles de la sphère réelle, entrainant une réactivation des politiques interventionnistes de la part des gouvernements. Devant le risque systémique qu’a fait peser sur le système financier mondial la faillite de Lehman Brothers, les gouvernements ont mis en œuvre des mesures d’aide à leurs banques nationales, prêts de plusieurs milliards d’euros aux grands établissements financiers de la place...
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Hera (Lady) Greek Queen of Olympus, sister
and wife of Zeus, daughter of Cronus and Rhea.
union was born Centaurus, father of the Centaurs. Ixion was bound to a fiery wheel and doomed to whirl perpetually through the sky. Hera and Io One of the loves of Zeus was the maiden Io. Zeus turned Io into a beautiful white cow to protect her from Hera, but Hera was not deceived. She demanded to be given the heifer and Zeus could not refuse her. Hera then tied up the heifer and the hundred-eyed Argus guarded her. The god Hermes rescued Io by using songs and stories to close all the eyes of A...
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Confucian philosophy, Japanese
1 Confucian philosophy in early Japan The earliest extant Japanese histories record that in AD 285 - the actual date was probably a century or so later - Wani, of the Korean kingdom of Paekche, brought copies of the Analects (Lunyu ; in Japanese, Rongo ) of Confucius and the Qianziwen (Thousand Character Classic; Senjimon in Japanese) from Korea to Japan ( Confucian philosophy, Korean ). Even though most scholarship on Japan tends to identify this introduction of Confucian texts with...
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tALus AcheLous
Il s'agit donc d'un droit, mais comme tout droit, son abus peut être sanctionné, au terme de la théorie de l'abus de droit. "La liberté consiste à pouvoir faire tout ce qui ne nuit pas à autrui" D'après Pierre Desproges: "on peut rire de tout mais pas avec n'importe qui". Ce qui amusera l'un risque de choquer l'autre. La portée de l'humour dépend du public et du sujet abordé. Ce qui juge le rire, c'est la nature des motivations dont il précède. Le rire peut être l'écho de tout ce qui...
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AcheLousLAbyrinth
d’abord, puis les relations professionnelles et amicales partagées tout au long de cette année passée ensemble. • Sommaire [pic] [pic] Introduction générale L’entreprise, dés lors que son activité augmente, nécessite le recours à des salariés. Cette situation justifie la mise en place d’une gestion sociale, dans toute structure économique. Bien évidemment, le développement de cette structuration sociale va passer par des seuils qu’ils soient historiques ou liés à la taille de l’entrep...
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Egyptian Art and Architecture - USA History.
The kings of the 1st Dynasty (2920 BC-2770 BC) were buried in the cemetery of their ancestors at Abydos in southern Egypt. Their burial sites were built of mud brick (bricks baked in the sun) and consisted of two parts: a tomb in the desert where the king was buried, and a rectangular funerary enclosure at the desert's edge, whererituals were performed. A pair of stone slabs called stelae marked the tombs and bore the name of the royal occupant. In the 2nd Dynasty (2770 BC-2649 BC), most r...
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Hans HICKMANN
1961, Ägypten, in H.
1985, «Inter-regional VariabilityinEgyptian Predynastic LithicAssemblages »,Wepwawet 1,16. Th. HOPFNER 1922-1925, FontesHistoriae Religionis Ægyptiacae, 5vol., Bonn. Erik HORNUNG 1956, «Chaotische Bereicheinder geordneten Welt»,ZÄS 81,28-32. 1957, «Zur geschichtlichen RolledesKönigs inder 18.Dynastie »,MDAIK 15,120-133. 1964, Untersuchungen zurChronologie undGeschichte desNeuen Reiches, ÄA11. 1966, Geschichte alsFest. ZweiVorträge zumGeschichtsbilde derfrühen Menschheit Darmstadt. 1967, «Der Men...
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hAdsAcheLous
de Sparte Archidamos entreprend de ravager l'Attique. La population se replie à Athènes. Les campagnards affluent dans la ville, et doivent se débrouiller pour trouver un logement. On leur dresse des tentes dans l'espace protégé des longs murs qui relient aux Pirée. Paysans supportent mal cet exil. Se sentent coupables de sacrilèges en abandonnant leur terre. On néglige de surcroît le culte des morts. L'évacuation n'a cependant qu'un caractère saisonnier. Les paysans reviennent sur leurs...
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From Bulfinch's Mythology: Niobe - anthology.
The Scipios' tomb contains no ashes now:The very sepulchres lie tenantlessOf their heroic dwellers; dost thou flow,Old Tiber! through a marble wilderness?Rise with thy yellow waves, and mantle her distress.'Childe Harold, IV. 79. As an illustration of this story there is a celebrated statue in the imperial gallery of Florence. It is the principal figure of a group supposed to have been originallyarranged in the pediment of a temple. The figure of the mother clasped by the arm of her terrifie...
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Geology.
terminology. Today the geologic time scale is generally agreed upon and used by scientists around the world, dividing time into eons, eras, periods, and epochs. Everyfew years, the numerical time scale is refined based on new evidence, and geologists publish an update. Geologists use several methods to determine geologic time. These methods include physical stratigraphy, or the placement of events in the order of their occurrence,and biostratigraphy, which uses fossils to determine geologic time...
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Minos and Scylla
se retrouve donc à la fois avec une tradition dynastique, et la participation du peuple. Cela peut poser problème en cas de mauvais résultat à un plébiscite, ça peut fragiliser la dynastie. Le régime fait donc beaucoup référence aux plébiscites de 51 et 52, mais on se gardera bien d'en organiser d'autres jusqu'en 1870. b) Démocratie La constitution de 1852 maintient des institutions représentatives et remet au suffrage des électeurs la désignation des membres de l’une des assemblées, le nou...
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Greek Art and Architecture - USA History.
The struggle between these two city-states and their allies ultimately led to the Peloponnesian War (431-404 BC), which Sparta won. Despite this conflict, the 5th century, often called the Classical period, is usually considered the culmination of Greek art, architecture, and drama, with its highest achievements being the Temple ofZeus at Olympia, the Parthenon in Athens, and the plays of Athenian dramatists Aeschylus, Sophocles, Euripides, and Aristophanes. The 4th century, or Late Classical p...
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From Bulfinch's Mythology: Baucis and Philemon - anthology.
But with the upside down, to showIts inclination for below;In vain, for a superior force,Applied at bottom, stops its course;Doomed ever in suspense to dwell,'Tis now no kettle, but a bell.A wooden jack, which had almostLost by disuse the art to roast,A sudden alteration feels.Increased by new intestine wheels;And, what exalts the wonder more,The number made the motion slower;The flier, though 't had leaden feet,Turned round so quick you scarce could see 't;But slackened by some secret power,Now...
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Arthropod - biology.
through a series of distinct phases to become adults. Larvae may also inhabit different environments and eat different foods than their parents. The life spans ofarthropods range from a few weeks to several decades. V ARTHROPOD EVOLUTION The evolutionary origins of modern arthropods are unclear and complex. It is generally accepted that the phylum is polyphyletic—that is, derived from several separateancestral lines. The ancestors of arthropods were ancient aquatic segmented worms, similar to p...
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Greek Mythology
I
INTRODUCTION
Temple of Apollo at Didyma
The Greeks built the Temple of Apollo at Didyma, Turkey (about 300 bc).
A1 The Creation of the Gods According to Greek myths about creation, the god Chaos (Greek for “Gaping Void”) was the foundation of all things. From Chaos came Gaea (“Earth”); the bottomlessdepth of the underworld, known as Tartarus; and Eros (“Love”). Eros, the god of love, was needed to draw divinities together so they might produce offspring. Chaosproduced Night, while Gaea first bore Uranus, the god of the heavens, and after him produced the mountains, sea, and gods known as Titans. The Tita...
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HERMES
* Types d'audit : de conformité et de pertinence 1- audit de conformité quand la finalité est de contrôler l'application des lois, normes; existence et respect des règles établies. 2- audit de pertinence, subdivisé en audit d'efficacité quand la finalité est d'évaluer la pertinence de l'organisation et l'efficacité du fonctionnement, qualité de prestation et amélioration des règles et audit de management quand la finalité est d'évaluer la pertinence des objectifs et la cohérence des opé...
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Peter Paul Rubens
I
INTRODUCTION
Thetis Dipping Achilles in the Styx
The sea nymph Thetis is seen dipping her son Achilles in the River Styx to make him immortal.
Rubens, Equestrian Portrait of the Duke of LermaIn 1603 Flemish painter Peter Paul Rubens traveled to Spain as part of a diplomatic mission. While there, he received acommission for this portrait of the Duke of Lerma, the powerful prime minister of Spanish king Philip III. The painting nowhangs in the Prado Museum in Madrid, Spain.The Prado Museum, Madrid/Archivo Fotografico Oronoz Shortly thereafter, following the example of many northern European artists of the period, Rubens traveled to Italy...
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Book
I
INTRODUCTION
Kelmscott Chaucer
The Kelmscott Chaucer was published in 1896 by William Morris' company, the Kelmscott Press.
B Medieval European Books Illustration of Saint Mark in the Ebbo GospelsThis is a page from the illuminated manuscript known as the Ebbo Gospels (about 816-835). It depicts Saint Mark lookingheavenward for inspiration as he writes his gospel account, and is drawn in an expressive, energetic style typical ofmedieval art of that period. The full name of the Ebbo Gospels is the Gospel Book of Archbishop Ebbo of Reims. This pagemeasures about 25 by 20 cm (about 10 by 8 in).Bridgeman Art Library, Lo...
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Metalwork
I
INTRODUCTION
Metalwork, in the fine arts, objects of artistic, decorative, and utilitarian value made of one or more kinds of metal--from precious to base--fashioned by either casting,
hammering, or joining or a combination of these techniques.
Early Bronze DiskThis disk with the head of Acheloos, an Etruscan river god, was made of bronze, an alloy of copper and tin, sometime inthe early 5th century bc. It comes from the necropolis of Monte Quaglieri in Tarquinia. Alloys are made by smelting twodifferent metals together.Scala/Art Resource, NY Knowledge of smelting ultimately led to knowledge of mixing different ores together in the smelting process to produce simple alloys. This followed an intermediateperiod, about 3000 BC, when comp...
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Rembrandt.
myth that the painting was rejected by those who commissioned it, and led to a decline in Rembrandt's reputation and fortune, it was actually well received. Many of Rembrandt's landscapes in this middle period are romantic and based on his imagination rather than recording specific places. The inclusion of ancient ruins androlling hills, not a part of the flat Dutch countryside, as in River Valley with Ruins (Staatliche Gemäldegalerie, Kassel), suggests a classical influence derived from Italy...
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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...
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Tragedy
I
INTRODUCTION
Euripides
Unlike other 5th-century BC Greek playwrights, tragic poet Euripides addressed the plight of the common people, rather
than that of mythic heroes.
SenecaSeneca was a Roman philosopher, dramatist, and statesman. His tragedies later influenced Renaissance dramatists,including William Shakespeare. The bust of Seneca shown here is a Roman copy of a Greek original.Art Resource, NY Aeschylus is one of the best known of the ancient Greek tragic playwrights. The author of some 90 plays, he established many of the conventions of the tragic dramaticform, which he perfected throughout his career. Aeschylus's skillful use of poetic language and brilli...
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Rembrandt
I
INTRODUCTION
Rembrandt (1606-1669), Dutch baroque artist, who ranks as one of the greatest painters in the history of Western art.
of his collection of art and antiquities, taken before an auction to pay his debts, showed the breadth of Rembrandt's interests: ancient sculpture, Flemish and ItalianRenaissance paintings, Far Eastern art, contemporary Dutch works, weapons, and armor. Unfortunately, the results of the auction—including the sale of hishouse—were disappointing. These problems in no way affected Rembrandt's work; if anything, his artistry increased. Some of the great paintings from this period are The Jewish Brid...
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Paleolithic Art
I
INTRODUCTION
Cave Painting, Lascaux
This portion of a cave painting in what is now Lascaux, France, was done by Paleolithic artists about 13,000 bc.
Venus of WillendorfThis so-called Venus figurine from the area of Willendorf, Austria, is one of the earliest known examples of sculpture,dating from about 23,000 bc. The figure, which is carved out of limestone, is only 11.25 cm (4.5 in) high, and wasprobably designed to be held in the hand. It is believed the Venus may be a fertility symbol, which would explain theexaggerated female anatomy.Ali Meyer/Bridgeman Art Library, London/New York Paleolithic art usually is classified as either figura...
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Photosynthesis - biology.
P680 in Photosystem II is now electron deficient because it has donated electrons to P700 in Photosystem I. P680 electrons are replenished by the water that has beenabsorbed by the plant roots and transported to the chloroplasts in the leaves. The movement of electrons in Photosystems I and II and the action of an enzyme split thewater into oxygen, hydrogen ions, and electrons. The electrons from water flow to Photosystem II, replacing the electrons lost by P680. Some of the hydrogen ions maybe...
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From Bulfinch's Mythology: Charlemagne - anthology.
The titles of some of Archbishop Turpin's chapters will show the nature of his history. They are these: 'Of the Walls of Pampeluna, that fell of themselves.' 'Of theWar of the holy Facundus, where the Spears grew.' (Certain of the Christians fixed their spears, in the evening, erect in the ground, before the castle; and found them,in the morning, covered with bark and branches.) 'How the Sun stood still for Three Days, and the Slaughter of Four Thousand Saracens.' Turpin's history has perhap...
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Cairo (Egypt) - geography.
Prize-winning author and Cairo native Naguib Mahfouz, whose fiction has provided a chronicle of the city. VI POINTS OF INTEREST The pyramids of Egypt, which served as tombs for the ancient pharaohs, and the statue of the Sphinx, which dates from about 2500 BC and is probably the country's most famous monument, are located just west of Cairo in the suburb of Giza. Depite the desert background usually depicted in photographs, the pyramids areextremely close to Cairo and are likely to be affecte...
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Natural Satellite - astronomy.
Titan, Saturn’s largest moon, also has few impact craters. Although icy volcanism from water and ammonia may occur along with some tectonic activity, Titan’s youngsurface is most likely the result of weather processes. Titan’s dense, cold atmosphere precipitates particles of complex organic molecules that accumulate as dunes andmountains. Methane rain erodes the surface and creates lakes at the moon’s poles. Triton’s young surface also may result from processes in its atmosphere, as well aserupt...
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Paris (city, France) - geography.
and its vibrant public square, frequented by street performers, soon became among the most popular landmarks in the city. West of the Pompidou Center is Les Halles, the site of the central market of Paris from the 12th century until 1969. The market was subsequently replaced by the Forum LesHalles, a multilevel underground complex featuring a shopping mall, museums, the Paris film library ( vidéothèque ), and a sports center. The street level of Les Halles features a garden, the Jardin des Halle...
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Richard Wagner.
which took place in August 1876. Wagner completed his final opera, Parsifal (which he called a 'festival drama of dedication' for the Festspielhaus), in 1882, and it premiered that July. In September Wagner moved to Venice, where in February 1883, after a heated argument with Cosima, he suffered a fatal heart attack. He was buried in Bayreuth. III MUSIC AND THOUGHT In the early 19th century, an opera was structured as a succession of conventional self-contained forms such as aria (a vocal so...
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Qur'an.
man who profoundly influenced the history of the world. See Spread of Islam. Muhammad’s home, the Arab city of Mecca, was a major religious center and site of the revered sanctuary and shrine, the Kaaba. According to legend, the ancientreligious patriarch of the Hebrew Bible, Abraham, and his son, Ishmael, built the shrine using foundations laid by the first human being and father of humankind, Adam.During Muhammad’s years there, from about AD 570 to 622, Mecca was also an environment of spir...
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Neandertals.
Neandertals made stone tools by striking flakes from rock “cores.” The cores were carefully selected and prepared so that only a single blow was normally required todetach a flake. A number of relatively standardized flakes were sometimes produced from a single core. These sharp flakes served as “blanks” that were further workedand shaped into the desired tools. Suitable stone was sometimes rare, and often tools were sharpened and resharpened to make new tools, yielding a whole variety ofshapes...