174 résultats pour "attractive"
- attraction n.
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Définition:
ATTRACTION, substantif féminin.
CLAUDE BERNARD, Principes de m?decine exp?rimentale, 1878, page 195. Remarque?: " Ce que nous appelons " pesanteur " n'est que la manifestation de l'attraction du globe terrestre " (Dictionnaire de l'astronautique (THOMAS DE GALIANA) 1963). ? Attraction ?lectrique ou ?lectrostatique. Celle qui existe entre charges ?lectriques de signe contraire?: ? 3. [La premi?re classe de ph?nom?nes dus ? l'?lectricit?] (...) se [traduit] (...) par des attractions et r?pulsions de corps l?gers, par des...
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Définition:
ATTRACTIF, -IVE, adjectif et substantif masculin.
2. Vieux. [En parlant d'une personne, d'une r?gion, etc.] Qui attire en s?duisant Synonymes?: attrayant, s?ducteur?: ? 4. Lucinde, en effet, l'appelait malgr? lui; il sortait de la beaut? de cette femme quelque chose d'attractif qui faisait venir ? elle; rien de plus doux que son visage, rien de plus simple que son maintien, et pourtant toute sa personne troublait;... GUSTAVE FLAUBERT, La Premi?re ?ducation sentimentale. 1845, page 101. C.? Sp?cialement. ? M?DECINE. Plante attractive,...
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l'attractivité de la france
compétitivité des entreprises et par conséquent donnant lieux a des délocalisations et des substitution de capital au travail. 2) L’IDE : moteur de croissance économique L’acquisition d’entreprises à haut potentiel par les groupes étrangers ne cesse d’augmenter grâce a une stratégie de cherry picking tout en augmentant sa performance a travers une restructuration en lui faisant profiter de ses actifs pour pouvoir avoir un avantage concurrentiel augmentant ainsi leur chiffre d’affa...
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Gravitation
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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...
- L'attractivité de la France
- Pourquoi certains pays en développement sont-ils plus attractifs que d'autres pour les entreprises étrangères dans le contexte de mondialisation contemporaine ?
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Sciences & Techniques: Attraction terrestre : les succès de Newton
gravitationnel pour dévier et accélérer les satellites sur des orbites qui se transforment en élégantes et complexes arabesques. Ainsi, le voyage de la sonde Galileo, qui a atteint Jupiter le 7 décembre 1995, et continue actuellement àfaire des ronds autour de la planète géante à la rencontre de ses satellites, avait débuté six ans plus tôt, le12 octobre 1989. La sonde a d'abord visé Vénus, qu'elle a contournée le 10 février 1990 puis, par deux fois,le 8 décembre 1990 et 1992, elle est revenue...
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- marée 1 PRÉSENTATION marée, phénomène de montée et de descente périodique du niveau des eaux océaniques, provoqué par l'attraction gravitationnelle de la Lune et du Soleil sur la Terre.
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N é en 1895 dans le sous-sol du Grand Café, à Paris, attraction foraine comme son
ancêtre la lanterne magique, le cinéma, un siècle plus tard, est déjà riche d'une histoire et
d'une mythologie, d'oeuvres classiques et de créateurs incontestés.
Une première séance, non commerciale, eut lieu à Paris le 22 mars 1895 ; on projeta la Sortie des ouvriers de l'usine Lumière . Le 1 er juin 1895, toujours en privé, Louis Lumière présenta à Lyon plusieurs films, dont l'Arroseur arrosé . À partir du 28 décembre de la même année, les séances publiques et payantes, à Paris, eurent un tel succès que les Lumière mirent immédiatement en fabrication deux cents appareils. Ces boîtes légères étaient à la fois des caméras permettant d'impressionner...
- Les modèles soviétique et américain dans les années 1950 et au début des années 1960 : entre attraction et rejet.
- L'attraction terrestre
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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...
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Birding - biology.
swallows, and rock doves nest on buildings in cities, towns, and farms. The chimney swift has abandoned hollow trees for chimneys as a nest site in urban areas.Mallards and Canada geese—once exclusively wild, migratory species—now live year-round in the open spaces found in city parks and golf courses. Nearly all purplemartins, a songbird species that once used the abandoned nests of woodpeckers or the natural cavities of cliffs or dead trees, now live primarily in structures specificallyconstru...
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Physics
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INTRODUCTION
Physics, major science, dealing with the fundamental constituents of the universe, the forces they exert on one another, and the results produced by these forces.
Starting about 1665, at the age of 23, Newton enunciated the principles of mechanics, formulated the law of universal gravitation, separated white light into colors,proposed a theory for the propagation of light, and invented differential and integral calculus. Newton's contributions covered an enormous range of naturalphenomena: He was thus able to show that not only Kepler's laws of planetary motion but also Galileo's discoveries of falling bodies follow a combination of his ownsecond law of m...
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Isaac NewtonIINTRODUCTIONIsaac Newton (1642-1727), English physicist, mathematician, and natural philosopher, considered one of the most important scientists of all time.
B Calculus (Newton’s “Fluxional Method”) In 1669 Newton gave his Trinity mathematics professor Isaac Barrow an important manuscript, which is generally known by its shortened Latin title, De Analysi . This work contained many of Newton’s conclusions about calculus (what Newton called his “fluxional method”). Although the paper was not immediately published, Barrowmade its results known to several of the leading mathematicians of Britain and Europe. This paper established Newton as one of the...
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Isaac Newton.
B Calculus (Newton’s “Fluxional Method”) In 1669 Newton gave his Trinity mathematics professor Isaac Barrow an important manuscript, which is generally known by its shortened Latin title, De Analysi . This work contained many of Newton’s conclusions about calculus (what Newton called his “fluxional method”). Although the paper was not immediately published, Barrowmade its results known to several of the leading mathematicians of Britain and Europe. This paper established Newton as one of the t...
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Fishing.
directly to the spool and turns the spool one rotation at a time. C Fishing Lines Fishing lines serve as the link between the angler’s reel and the lure or bait. The most popular line used for sportfishing is monofilament nylon line, which is strong anddurable and has a certain amount of stretch, which helps when an angler sets the hook. The line comes in a variety of strengths, from 2-pound test to more than 100-pound test. (Pound test is the amount of pressure that can be put on a line before...
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Molecule - chemistry.
attracted to the negatively charged electrons between them. The electrons belong to the molecule as a whole. However, each hydrogen atom now has a complete outershell of two electrons. The formula H 2 describes a hydrogen molecule, a discrete unit. When a molecule contains just two atoms, such as the hydrogen molecule does, it is called a diatomic molecule. Some atoms can form covalent bonds with more than one other atom and thus create a larger molecule. Atoms form molecules with covalent bo...
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Montréal - geography.
percent), and Eastern Orthodox (2.8 percent) religions. Another 5.4 percent claim no religious affiliation. IV EDUCATION AND CULTURE Montréal has a large number of private schools, most of them partially funded by the province. Like the rest of Québec province, Montréal has two public schoolsystems, one for French speakers and one for English speakers. The Charter of the French Language (1977), known as Bill 101, restricts access to English-languageschools and requires children of immigrants t...
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Montréal - Geography.
percent), and Eastern Orthodox (2.8 percent) religions. Another 5.4 percent claim no religious affiliation. IV EDUCATION AND CULTURE Montréal has a large number of private schools, most of them partially funded by the province. Like the rest of Québec province, Montréal has two public schoolsystems, one for French speakers and one for English speakers. The Charter of the French Language (1977), known as Bill 101, restricts access to English-languageschools and requires children of immigrants t...
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Electricity
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INTRODUCTION
Electricity, one of the basic forms of energy.
electrons in the neutral object are attracted to the positive object. Some of these electrons flow to the side of the neutral object that is nearest to the positive object.This side of the neutral object accumulates electrons and becomes negatively charged. Because electrons leave the far side of the neutral object while its protonsremain stationary, that side becomes positively charged. Since the negatively charged side of the neutral object is closest to the positive object, the attraction bet...
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Gambling.
C Lotteries Lotteries are another form of gambling. In a lottery, tickets are sold for a set amount and a share of the proceeds is returned to the winners, usually through a randomdraw. Most games allow players to pick their own numbers or let a computer randomly pick for them. Lotteries offer a wide variety of games, including weekly drawings,instant “scratch” tickets, daily games, and superlottos with prizes increasing until there is a winner. Large lottery prizes sometimes exceed $100 millio...
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Pollination - biology.
rapidly as in cross-pollination, because one plant with a beneficial gene can transmit it only to its own offspring and not to other plants. Self-pollination evolved laterthan cross-pollination, and may have developed as a survival mechanism in harsh environments where pollinators were scarce. IV POLLEN TRANSFER Unlike animals, plants are literally rooted to the spot, and so cannot move to combine sex cells from different plants; for this reason, species have evolved effectivestrategies for ac...
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Hydrogen - chemistry.
Hydrogen gas does not usually react with other chemicals at room temperature. That is, it does not split into two hydrogen atoms to combine with other chemicals. Thebond between the hydrogen atoms is very strong and can only be broken with a large amount of energy. However, when heated with a flame or a spark, hydrogen gaswill react violently with oxygen in the air to produce water in the following reaction: 2H2 + O 2 → 2H 2O This chemical equation shows that two hydrogen molecules (H 2) and o...
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Tokyo - geography.
The port of Tokyo has expanded tremendously in recent years and is now the second largest in Japan (after Yokohama) in value of trade. In 1993 it accounted forapproximately 14 percent of all trade by Japan’s ports. Reasons for the port’s growth include the deepening of sea lanes in Tokyo Bay, large reclamation projects tocreate room for new facilities and container terminals, and improvements to storage and distribution facilities. The largest categories of exports from the port of Tokyoare mach...
- Les littoraux, des espaces attractifs mais exposés aux risques
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Qu'est-ce qu'une marque employeur ?
c. Les entreprises qui se différencient par une marque employeurComment fidéliser ses employés et attirer de nouveaux candidats ? De quelle façon l'entreprise peut-elle se donnerune valeur ajoutée et se démarquer de la concurrence ?En ces temps de mondialisation, de mobilité de la main d'œuvre et de compétence, toute entreprise doit pouvoir êtreen mesure de se démarquer et se distinguer avantageusement de la concurrence avec une image de marque. Ainsi,la pénurie de ressources qualifiées qui se...
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Chemistry - chemistry.
parts of oxygen by weight, which is a ratio of about 1 to 8, regardless of whether the water came from the Mississippi River or the ice of Antarctica. In other words, acompound has a definite, invariable composition, always containing the same elements in the same proportions by weight; this is the law of definite proportions. Many elements combine in more than one ratio, giving different compounds. In addition to forming water, hydrogen and oxygen also form hydrogen peroxide.Hydrogen peroxide h...
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Fish - biology.
pectoral fins provide fine movements, add forward thrust, or, together with the pelvic fins, serve as brakes. Typically, fins consist of a thin membrane stretched over afanlike series of thin rods called spines or rays. Most fish breathe underwater with the help of special respiratory organs called gills. Gills are made of a series of thin sheets or filaments through which blood circulates.As water moves into a fish’s mouth and passes over the gills, dissolved oxygen passes across the thin gill...
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Planetary Science - astronomy.
III ORIGINS AND COMPOSITIONS OF PLANETS Astronomers believe that planetary systems are formed of elemental materials that were created in the interiors of giant stars. Some of this material comes from giantstars that shed material into space as they age. Most of the matter to form planets, however, comes from stars that explode as supernovas and spread debris enrichedwith the heavier chemical elements into space. According to the currently accepted views, the most likely first stage in the evo...
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Flower - biology.
insects. The sepals unfurl as the flower opens and often resemble small green leaves at the flower’s base. In some flowers, the sepals are colorful and work with thepetals to attract pollinators. E Variations in Structure Like virtually all forms in nature, flowers display many variations in their structure. Most flowers have all four whorls—pistil, stamens, petals, and sepals. Botanists callthese complete flowers. But some flowers are incomplete, meaning they lack one or more whorls. Incomplet...
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- L'UE : Une construction élargie et attractive, mais inachevée et discutée
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Ontario - Geography.
governed Ontario’s initial settlement and development. The province’s most important river is the St. Lawrence. Its route was much improved and enlarged by dredgingand canal building in the mid-20th century. This enabled large ocean-going vessels to reach Great Lake ports ( see St. Lawrence Seaway). The Ottawa River was an important early route to the interior for fur traders and timber merchants. The Niagara River, because of its falls, is a great center of hydroelectric power as well as aninte...
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Ontario - Canadian History.
governed Ontario’s initial settlement and development. The province’s most important river is the St. Lawrence. Its route was much improved and enlarged by dredgingand canal building in the mid-20th century. This enabled large ocean-going vessels to reach Great Lake ports ( see St. Lawrence Seaway). The Ottawa River was an important early route to the interior for fur traders and timber merchants. The Niagara River, because of its falls, is a great center of hydroelectric power as well as aninte...
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Michigan - geography.
The interior location of Michigan in the northern part of North America results in a continental climate, characterized by four definite seasons with moist, mild to hotsummers and snowy, cold winters. Winds off of Lakes Michigan and Superior in winter create heavy snow accumulations in nearby areas. The tempering effects of LakeMichigan account for the presence of the state’s famous fruit-growing belt along the lake’s shore. Since the water is colder than the land in spring, the westerly windspa...
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Michigan - USA History.
The interior location of Michigan in the northern part of North America results in a continental climate, characterized by four definite seasons with moist, mild to hotsummers and snowy, cold winters. Winds off of Lakes Michigan and Superior in winter create heavy snow accumulations in nearby areas. The tempering effects of LakeMichigan account for the presence of the state’s famous fruit-growing belt along the lake’s shore. Since the water is colder than the land in spring, the westerly windspa...
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Le nouveau visage de la Mondialisation
* La Chine est particulièrement attractive (1990) : renouvellement rapide de a production et industries de plus en plus sophistiquées : remontée de filières . Mais répartition très inégale des IDE au sein du Sud. Au milieu des années 1990 : *1/3 en Chine *1/3 dans les autres pays asiatiques et d’Amérique Latine *l’autre tiers ailleurs dans les 135 autres pays en développement. Les pays du Sud ont compris la chance que représentaient ces IDE => nouvelles politiques d’attra...
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London (England) - geography.
In the northern part of the West End is Bloomsbury, the city’s traditional intellectual center, with its concentration of bookshops and homes of writers and academics. Inthe early 20th century a number of famous writers, critics, and artists who lived here became known as the Bloomsbury Group. Here, too, is the British Museum, one ofLondon’s chief tourist attractions. Nearby is the giant complex of the University of London, whose various colleges and departments have taken over much ofBloomsbury...
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Chapitre 18 correction exo physiques seconde
91 Chapitre 18 La gravitation universelle 2. a. La Lune exerce une action mécanique sur la Terre. Elle est modélisée par la force d’attraction gravitation- nelle exercée par la Lune. b. Même expression qu’en 1. a. c. Même résultat qu’en 1. c. 4 1. F m m d G Sole il Terre 2 , soit F ¥ ¥ ¥ ¥ ¥ ¥ - 6 6 7 1 0 5 9 8 1 0 1 99 10 1 5 0 1 0 11 24 30 112 , , , ( , ) = 3,53 ¥ 1022 N. 2. Même réponse qu’en 1. 3. Les deux forces ont les mêmes i...
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Disneyworld, un monde féerique et enchanteur pour les petits et les grands
La parade de Disneyworld lors du 60" anniversaire de Mickey, en 1994 Disneyw orld, un monde féerique et encha nteur pour les petits et les grand s Après Disneyland en Cal ifornie, Disneyworld ouvre ses portes en Floride en 1971. Il s'agit d'un gigan tesque parc de loisir s, en carton-pâte et en plastique. Enfants et adultes peuvent y oublier quelqu es heur es durant les soucis du quotidien. U n jour où Walt Disney s'ennuie lors d'une de ses escapades...
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Les festivals : moteurs de la valorisation du patrimoine et de l’attractivité touristique d’un territoire. Le cas de la ville d'Arles.
apparition à la fin des années 60, il a suscité un dynamisme qui a bouleversé le paysage culturel en faisant du mieux la, la ville de la photo et de l'image. Ayant attiré 72 000 visiteurs en 2009, le festival se trouve, avec ce chiffre record, dans une nouvelle période de croissance. Après déjà 41 ans d'existence, il se projette dans le futur en attaquant de front l'instabilité financière à laquelle les festivals sont toujours sujets, ainsi qu'au besoin de se renouveler tout en conservant sa qua...
- Entre des parcelles de fluide magnétique distantes les unes des autres, elle admet l'existence d'actions attractives ou répulsives. Pierre Duhem, la Théorie physique, son objet, sa structure
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LE MYSTERE DES TROUS NOIRS
environ un million de fois plus d'étoiles dans notre voisinage pour que les collisions entre étoiles puissent aboutir à la formation d'un tel trou noir. TROUS NOIRS SUPERMASSIFS Difficile à imaginer , mais pourtant, ils existent ! Ces objets incroyablement lourds (des millions, voire des milliards de fois plus lourds que le Soleil) sont issus de la concentration d'énormes quantités de matière ainsi que de la collision entre étoiles, et sont...
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Science de la navigation spatiale, l'astronautique est l'ensemble des moyens qui
permettent de faire voyager dans l'espace des matériels et des hommes.
La navigation d'une sonde interplanétaire s'effectue sur une trajectoire calculée à partir des lois de la gravitation (attraction du Soleil, des planètes, de leurs satellites). Après une mise en orbite terrestre, la sonde est accélérée pour échapper à la Terre et pour suivre une courbe qui l'amène au voisinage de la planète à visiter. Là, sous l'attraction de l'astre, sa course s'accélère et s'infléchit. Si l'on soumet alors l'engin à une impulsion de freinage correcte, on peut soit le p...
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Jane Austen.
years later.) Mansfield Park is Jane Austen’s most ambitious novel—in length, in variety of characterization, and in the scope of its theme. It centers on the effects of upbringing on personal morality in three families—the middle-class Bertrams, the fashionable Crawfords, and the impoverished Prices. Austen has been praised for her presentation ofthe complex relations between the members of the families, but as in Sense and Sensibility, she frustrates the expectations of her readers that the...
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Belize - country.
Education is compulsory for children between the ages of 5 and 14. Attendance at primary schools was nearly universal in 2002–2003, but only 78 percent of children ofsecondary school age were enrolled in school. Higher education is available at colleges in Belize City and Corozal. The literacy rate of 93 percent is one of the highest inLatin America. C Government Belize is governed under a constitution that became effective at independence in 1981. Belize recognizes the British monarch as its o...
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Yangtze - Geography.
A Agriculture and Industry Today about 400 million people, or about one-third of the population of China, live in the Yangtze Basin. Many are engaged in agriculture. The basin contributes nearlyhalf of China’s crop production, although only one-quarter of the basin is arable. The most fertile areas for farming are the Sichuan Basin, the plains between theYangtze and its tributary the Han, and the plains of the lower basin. In all about 40 percent of the cereals, more than 30 percent of the cott...
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Jane Austen
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INTRODUCTION
Jane Austen
English author Jane Austen crafted satirical romances set within the confines of upper-middle-class English society.
up their personal pride and prejudices before they can enter into a happy relationship together. As do Austen’s earlier writings, Pride and Prejudice displays the themes of appearance versus reality, and impulse versus deliberation. Elizabeth, trusting her own impulses, makes a mistake about Darcy and his apparent arrogance that deliberation and further experience eventually cause her to correct. Of Elizabeth, Austenwrote: “I must confess that I think her as delightful a creature as ever appea...
- Oméga vers lequel convergent les forces de l'Evolution doit, pour jouer son rôle de pôle attractif, être lui-même personnel et transcendant au Monde; aussi Teilhard écrira-t-il que « le Christ, hic et nunc, occupe pour nous, en position et en fonction, la place du Point Oméga ».