127 résultats pour "seen"
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Light
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INTRODUCTION
Light, form of energy visible to the human eye that is radiated by moving charged particles.
simulates the action of a moving charge upon the electric field. It creates a wave that travels along the rope in a direction that is perpendicular to the initial up anddown movement. Because electromagnetic waves are transverse—that is, the vibration that creates them is perpendicular to the direction in which they travel, they are similar to waveson a rope or waves traveling on the surface of water. Unlike these waves, however, which require a rope or water, light does not need a medium, or su...
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German Literature
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INTRODUCTION
German Literature, literature written in the German language from the 8th century to the present, and including the works of German, Austrian, and Swiss authors.
Till EulenspiegelThe medieval peasant Till Eulenspiegel appears in many German folktales as a trickster who outwits people in positions ofauthority. In this image his first name is spelled Tyll.Keystone Pressedienst GmbH The rise of the middle class in the 14th and 15th centuries and the struggles of the peasants against the nobility culminated in the great 16th-century religiousrevolution known as the Reformation. This movement was reflected in literature, especially by Martin Luther, whose tra...
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Nanotechnology.
ever-finer method of reducing material to the nanoscale size. Instead, nanostructures would be assembled atom by atom and molecule by molecule, from the atomiclevel up, just as occurs in nature. However, assembly at this scale has its own challenges. In school, children learn about some of these challenges when they study the random Brownian motion seen in particles suspended in liquids such as water. Theparticles themselves are not moving. Rather, the water molecules that surround the particles...
- Midnighters
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United States House of Representatives.
Because of the high cost of elections and the short two-year term of office, members of the House campaign almost constantly. They spend much of their time raisingcampaign funds, and they frequently return to their districts to keep in touch with voters. Because the elections are so frequent, House members tend to pay closeattention to how their votes in Congress will be seen in the short term. House members tend to come from wealthier family backgrounds than average Americans. Few working class...
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Marriage.
In many traditional societies, marriage typically involved transfers of property from the parents to their marrying children or from one set of parents to the other. Thesecustoms persist in some places today and are part of the tradition of arranged marriages. For example, in some cultures the bride’s parents may give property (knownas a dowry) to the new couple. The practice of giving dowries has been common in countries such as Greece, Egypt, India, and China from ancient times until thepresen...
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Theater
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INTRODUCTION
The Art of Theater
BBC Worldwide Americas, Inc.
Theater at EpidaurusAncient Greek dramas were performed in open-air theaters like this one in Epidaurus, Greece, which was designed byPolyclitus the Younger in 350 bc. A festival of ancient Greek drama is still held in the summer in this 14,000-seat theater.Roger Wood/Corbis Fundamental to the theater experience is the act of seeing and being seen; in fact, the word theater comes from the Greek word theatron , meaning 'seeing place.' Throughout the history of world cultures, actors have used...
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Mammal - biology.
On land, mammals live in many different habitats, and at a wide range of altitudes. Many mammals dig burrows as refuges or as places to raise their young, but somehave developed a largely subterranean lifestyle, feeding on small animals or plant roots beneath the soil's surface. These animals, including moles and mole-rats, digthrough the ground either with spadelike front paws or with their teeth, and they detect danger by being highly sensitive to vibrations transmitted through the soil.Most m...
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Anthropology.
humans, such as tools, pottery, and buildings) and human fossils (preserved bones). They also examine past environments to understand how natural forces, such as climate and available food, shaped the development of human culture. Some archaeologists study cultures that existed before the development of writing, a time knownas prehistory . The archaeological study of periods of human evolution up to the first development of agriculture, about 10,000 years ago, is also called paleoanthropology....
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Bicycle.
narrow as possible to minimize weight and interference with pedaling. F Specialty Bicycles Many other types of bicycles are designed for special purposes. Although not as common as standard single-rider racing, touring, mountain, or recreational bicycles,they nonetheless have significant niches. Recumbent bicycles are bicycles on which the rider sits upright as if in a chair, with legs and feet stretched out in front. Because they support the rider’s lower back,recumbents allow the rider far mo...
- The way in which companies frame themselves, their products and their clients
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Geographic Exploration.
The commercial reason for exploration has been a consistent driving force. In 1492 the great navigator Christopher Columbus sailed west across the Atlantic Oceanseeking a new, shorter, and cheaper route to reach the riches of East Asia, and Portuguese explorer Vasco da Gama circumnavigated Africa for much the same reason.Yet similar investigations of the profitable eastern trade had already been made by Arab sailors. Arab trading ships were sailing from the Arabian Sea to southeasternAsia probab...
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Geographic Exploration - explorer.
The commercial reason for exploration has been a consistent driving force. In 1492 the great navigator Christopher Columbus sailed west across the Atlantic Oceanseeking a new, shorter, and cheaper route to reach the riches of East Asia, and Portuguese explorer Vasco da Gama circumnavigated Africa for much the same reason.Yet similar investigations of the profitable eastern trade had already been made by Arab sailors. Arab trading ships were sailing from the Arabian Sea to southeasternAsia probab...
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French Revolution.
B2 Assembly of Notables and Estates-General To pressure the parlements into accepting the plan, Calonne decided to gain prior approval of it from an Assembly of Notables—a group of hand-picked dignitaries hethought would sympathize with his views. But Calonne had badly miscalculated. Meeting in January 1787, the assembly refused to believe that a financial crisis reallyexisted. They had been influenced by Necker’s argument that state finances were sound and suspected that the monarchy was only...
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French Revolution .
B2 Assembly of Notables and Estates-General To pressure the parlements into accepting the plan, Calonne decided to gain prior approval of it from an Assembly of Notables—a group of hand-picked dignitaries hethought would sympathize with his views. But Calonne had badly miscalculated. Meeting in January 1787, the assembly refused to believe that a financial crisis reallyexisted. They had been influenced by Necker’s argument that state finances were sound and suspected that the monarchy was only...
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Wisconsin (state) - geography.
-6° C (22° F) in the southeast, along the Lake Michigan shore. During winter extremely cold weather persists for several weeks at a time. C2 Precipitation Average annual precipitation ranges from 700 to 800 mm (28 to 32 in). Rainfall is generally heaviest during the spring and summer, and snowfall is generally moderatein the south, but can be quite heavy in the north. Thunderstorms, sometimes accompanied by devastating tornadoes, are common in spring and summer, particularly inthe southern part...
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Wisconsin (state) - USA History.
-6° C (22° F) in the southeast, along the Lake Michigan shore. During winter extremely cold weather persists for several weeks at a time. C2 Precipitation Average annual precipitation ranges from 700 to 800 mm (28 to 32 in). Rainfall is generally heaviest during the spring and summer, and snowfall is generally moderatein the south, but can be quite heavy in the north. Thunderstorms, sometimes accompanied by devastating tornadoes, are common in spring and summer, particularly inthe southern part...
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South Carolina - geography.
(20° F) or lower, occur each winter. July temperatures average 27° C (80° F) in most of the state, with temperatures in the lower 20°s C (lower 70°s F) in themountains. Except in the mountains, summer daytime highs throughout South Carolina often enter the lower 30°s C (lower 90°s F). The temperature in July in Columbiaranges from 21° to 33° C (70° to 92° F). D2 Precipitation Central South Carolina has an average annual precipitation (both rainfall and snowfall) of 1,140 mm (45 in). Greater amo...
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South Carolina - USA History.
(20° F) or lower, occur each winter. July temperatures average 27° C (80° F) in most of the state, with temperatures in the lower 20°s C (lower 70°s F) in themountains. Except in the mountains, summer daytime highs throughout South Carolina often enter the lower 30°s C (lower 90°s F). The temperature in July in Columbiaranges from 21° to 33° C (70° to 92° F). D2 Precipitation Central South Carolina has an average annual precipitation (both rainfall and snowfall) of 1,140 mm (45 in). Greater amo...
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American Literature: Poetry
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INTRODUCTION
Phyllis McGinley
American poet and author Phyllis McGinley composed light, witty verse, much of which deals with family life.
Taylor, a poet of great technical skill, wrote powerful meditative poems in which he tested himself morally and sought to identify and root out sinful tendencies. In“God's Determinations Touching His Elect” (written 1680?), one of Taylor’s most important works, he celebrates God's power in the triumph of good over evil in thehuman soul. All of Taylor’s poetry and much of Bradstreet’s served generally personal ends, and their audience often consisted of themselves and their family andclosest frie...
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Minnesota - geography.
C Climate Minnesota’s climate is classified as humid continental because normally there is a sufficient amount of precipitation to provide at least some surplus for runoff, andbecause Minnesota’s temperature conditions are largely controlled by its location in the interior of the large landmass of North America. The result is extreme seasonaltemperature variations. The average January temperature is about -18°C (about 0°F) in the northwest and about -10°C (about 14°F) in the south, but thetherm...
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Minnesota - USA History.
C Climate Minnesota’s climate is classified as humid continental because normally there is a sufficient amount of precipitation to provide at least some surplus for runoff, andbecause Minnesota’s temperature conditions are largely controlled by its location in the interior of the large landmass of North America. The result is extreme seasonaltemperature variations. The average January temperature is about -18°C (about 0°F) in the northwest and about -10°C (about 14°F) in the south, but thetherm...
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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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- On the road
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Vereinigte Staaten von Amerika - geographie.
Zu den bekanntesten Säugetierarten der Vereinigten Staaten gehören Bisons, Wapitis (amerikanische Rothirsche), Elche, Braunbären (mit den Unterarten Grizzlybär undKodiakbär), Schwarzbären, Pumas, Wölfe, Kojoten und Nordamerikanische Biber; in den Prärien sind Präriehunde verbreitet. Lebten um 1800 noch rund 40 Millionen Bisonsin den Prärien Nordamerikas, waren es 100 Jahre später nur noch etwa 1 000. Heute hat sich der Bestand aufgrund strenger Schutzvorschriften erholt und liegt bei etwa200 000...
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Vereinigte Staaten von Amerika - geographie.
Zu den bekanntesten Säugetierarten der Vereinigten Staaten gehören Bisons, Wapitis (amerikanische Rothirsche), Elche, Braunbären (mit den Unterarten Grizzlybär undKodiakbär), Schwarzbären, Pumas, Wölfe, Kojoten und Nordamerikanische Biber; in den Prärien sind Präriehunde verbreitet. Lebten um 1800 noch rund 40 Millionen Bisonsin den Prärien Nordamerikas, waren es 100 Jahre später nur noch etwa 1 000. Heute hat sich der Bestand aufgrund strenger Schutzvorschriften erholt und liegt bei etwa200 000...