52 résultats pour "explain"

• Creation Stories Creation Stories, myths that explain the origin of the universe, or cosmos.

• Cosmology - astronomy.

  In 1917 American scientist Harlow Shapley measured the distance to several groups of stars known as globular clusters. He measured these distances by using amethod developed in 1912 by American astronomer Henrietta Leavitt. Leavitt’s method relates distance to variations in brightness of Cepheid variables, a class of starsthat vary periodically in brightness. Shapley’s distance measurements showed that the clusters were centered around a point far from the Sun. The arrangement of theclusters was...

• ? Part 1 ? Jobs 1. Explain

• Physics I 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...

• Western Philosophy.

  the popular belief in personal deities, but he failed to explain the way in which the familiar objects of experience could develop out of elements that are totally differentfrom them. Anaxagoras therefore suggested that all things are composed of very small particles, or “seeds,” which exist in infinite variety. To explain the way in whichthese particles combine to form the objects that constitute the familiar world, Anaxagoras developed a theory of cosmic evolution. He maintained that the activ...

• Child Development.

  developmental scientists have studied how cultural values guide the skills and attitudes that children acquire as they mature, and how brain maturation influences thedevelopment of thinking and feeling. For a more detailed discussion of child development theories, see the Theories of Child Development section of this article. III BASIC QUESTIONS A Nature and Nurture Scholars have long debated the relative importance of nature (hereditary influences) and nurture (environmental influences) i...

• 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...

• Commentary : Death and sexuality in Virgin suicides  

  the Catholic religion. More than a story about death and sex, Jeffrey Eugenides offers us an essay about the adolescence. Our incomprehension about teenagers is illustrate with the suicides of the Lisbongirls. The message of this book is summarized in the title Virgin Suicide, which depicts what kind of link between death and sex the author has chosen to deal with, that is to say : howsome young girls (virgin) will kill themselves (suicides). So we can see in this text how the sex can be an inte...

• Canadian Parliament.

  government’s legislative program. Members of Commons can also present a motion in response to the Budget Speech, which reviews the government’s economicrecord, taxation, and expenditure plans, and to Supply Motions, which concern budgets for individual departments. If a majority of MPs support a no-confidence motion,the government must resign. Also, if Parliament rejects a significant government proposal, the government is expected to resign and request the governor-general to call an election....

• Inorganic Chemistry - chemistry.

  two electrically charged plates (positively charged top plate and negatively charged bottom plate). By measuring the difference in how fast these electron-laden oildrops fell when the metal plates were charged and uncharged, Millikan was able to calculate the total charge on each oil drop. Because each measurement was a wholenumber multiple of -1.60 × 10 -19 coulombs, Millikan concluded this was the charge carried by a single electron. Using Thomson’s electron charge-to-mass ratio, Millikan then...

• Modern Art I INTRODUCTION American Gothic American Gothic was painted by the 20th-century American artist Grant Wood in 1930.

  while at the other side a woman in black appears to mourn the end of her participation in the dance. Click on the buttonsto learn more.© Microsoft Corporation. All Rights Reserved. In view of this diversity, it is difficult to define modern art in a way that includes all of 20th-century Western art. For some critics, the most important characteristic ofmodern art is its attempt to make painting and sculpture ends in themselves, thus distinguishing modernism from earlier forms of art that had con...

• Electron I INTRODUCTION Models of the Atom Once scientists discovered the electron, they set out to explain how electrons behave in atoms.

  Electron Density and Orbital ShapesAtomic orbitals are mathematical descriptions of where the electrons in an atom (or molecule) are most likely to be found.These descriptions are obtained by solving an equation known as the Schrödinger equation, which expresses ourknowledge of the atomic world. As the angular momentum and energy of an electron increases, it tends to reside indifferently shaped orbitals. The orbitals corresponding to the three lowest energy states are s, p, and d, respectively....

• Artistic interpretation

  that a musical passage leads back to the tonic key is to describe it non-interpretively, but to explain it simply as abridge passage is to interpret it, however obviously. 2 Meaning Most theorists of literary criticism agree that the interpretation of literature aims to disclose meanings in texts.They disagree about the ground of such meaning, whether it is simply the semantic conventions of the language,the intentions of authors, or the interpretive activities of readers or critics. But i...

• Consciousness

  view faces several serious objections. Rival views of introspective consciousness fall into three categories, according to whether they treat introspective access (1) as epistemically looser or less direct than inner perception, (2) as tighter or more direct, or (3) as fundamentally non-epistemic or nonrepresentational. Theories in category (1) explain introspection as always retrospective, or as typically based on self-directed theoretical inferences. Rivals from category (2) maintain that an i...

• Mythology I INTRODUCTION Mythology, the body of myths of a particular culture, and the study and interpretation of such myths.

  usually define a myth as a story that has compelling drama and deals with basic elements and assumptions of a culture. Myths explain, for example, how the worldbegan; how humans and animals came into being; how certain customs, gestures, or forms of human activity originated; and how the divine and human worlds interact.Many myths take place at a time before the world as human beings know it came into being. Because myth-making often involves gods, other supernatural beings, andprocesses beyond...

• Social Psychology.

  During the 1960s, American psychologist Stanley Milgram studied a form of social influence stronger than conformity: obedience to authority. In a famous series ofexperiments that attracted controversy about human research ethics, Milgram put each of 1,000 subjects into a situation in which they were ordered by anexperimenter to administer painful electric shocks to a confederate (who did not actually receive any shocks). The subjects in these studies were led to believe that theywere acting as '...

• Learning.

  B1 Acquisition The acquisition phase is the initial learning of the conditioned response—for example, the dog learning to salivate at the sound of the bell. Several factors can affect the speed of conditioning during the acquisition phase. The most important factors are the order and timing of the stimuli. Conditioning occurs most quickly when theconditioned stimulus (the bell) precedes the unconditioned stimulus (the food) by about half a second. Conditioning takes longer and the response is...

• brushing past me?

  trying tofind theone onwhich shewas born, herfirst love, when shelast saw herparents, andIwas looking forAnna, too, Isearched andsearched, Igot apaper cutonmy forefinger andbled alittle flower ontothepage onwhich Ishould have seenherkissing somebody, butthis was allIsaw: I wanted tocry but Ididn't cry,Iprobably shouldhavecried, Ishould havedrowned usthere inthe room, ended our suffering, theywould havefound usfloating face-down intwo thousand whitepages, orburied underthesalt ofmy evaporated tea...

• Essay : Stranger in the village

  people are courteous, he still can feel that he is not welcomed in this village where people are racist and narrow-minded.               The reactions of the villagers can partially be explained by their lack of culture and their narrow-mindedness. Indeed, these people live in a tiny village which is cut of the outside world.  They have to go to the village at the foot of the mountain to see a movie or go to the bank as there is no movie house, no bank nor library in the village. It seems that p...

• WHY I'M NOT WHERE YOU ARE 5/21/63   Your mother and I never talk about the past, that's a rule.

  under theNothing doorandstained theSomething hallway,there'snothing tosay. Itbecame difficulttonavigate from Something toSomething withoutaccidentally walkingthrough Nothing, andwhen Something—a key,apen, a pocketwatch—was accidentallyleftinaNothing Place,itnever couldberetrieved, thatwasanunspoken rule,likenearly all ofour rules havebeen. There cameapoint, ayear ortwo ago, when ourapartment wasmore Nothing than Something, thatinitself didn't havetobe aproblem, itcould havebeen agood thing, itco...

• First Americans.

  bones and artifacts helped 19th-century archaeologists establish the age of ancient human encampments in Europe. Yet, search as they might, American archaeologists found no comparable evidence of a Pleistocene-era human presence. But several sites revealed stone artifacts thatsome scholars believed looked similar to the ancient stone tools found in Europe. On the basis of this similarity, these experts claimed the American artifacts must be asold. By the 1890s, however, other scholars had challe...

• First Americans - Canadian History.

  bones and artifacts helped 19th-century archaeologists establish the age of ancient human encampments in Europe. Yet, search as they might, American archaeologists found no comparable evidence of a Pleistocene-era human presence. But several sites revealed stone artifacts thatsome scholars believed looked similar to the ancient stone tools found in Europe. On the basis of this similarity, these experts claimed the American artifacts must be asold. By the 1890s, however, other scholars had challe...

• 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...

• english history

  He was a Scottish moral philosopher and a pioneer of political economics. Smith studied social philosophy at the University of Glasgow and the University of Oxford. Smith obtained a professorship at Glasgow teaching moral philosophy. Smith returned home and spent the ten years writing The Wealth of Nations , publishing it in 1776. He became famous for this book, which had a profound influence on modern economics and concepts of individual free...

• HISTOIRE DE KEYNE BRITISH

  He was a Scottish moral philosopher and a pioneer of political economics. Smith studied social philosophy at the University of Glasgow and the University of Oxford. Smith obtained a professorship at Glasgow teaching moral philosophy. Smith returned home and spent the ten years writing The Wealth of Nations , publishing it in 1776. He became famous for this book, which had a profound influence on modern economics and concepts of individual free...

• Ice Ages.

  B Future Ice Ages The record of previous glacial activity is the best indicator for future ice ages. Scientists examine the evidence for the numerous 100,000-year glacial-interglacial cycleswithin the present ice age to attempt a forecast of future ice ages. Since all previous ice ages lasted tens of millions of years, our present ice age will likely continue fora considerable amount of time. Each glaciation begins slowly and may take 80,000 years or more to reach its maximum extent. A rapid me...

• X-Ray Astronomy - astronomy.

  Some neutron stars have weaker magnetic fields that allow incoming material to settle onto the entire surface of the neutron star. Eventually, so much material buildsup that the surface layer becomes dense enough to set off a vast thermonuclear explosion, called an outburst. The explosion heats gas to produce X rays. Such aneutron star—called an X-ray burster—can increase its X-ray production by a million times during an outburst. The X-ray glow fades over time, and the binary systementers a lon...

• Big Bang Theory - astronomy.

  hydrogen atoms. Hydrogen atoms can only absorb and emit specific colors, or wavelengths, of light. The formation of atoms allowed many other wavelengths of light,wavelengths that had been interfering with the free electrons prior to the cooling of the universe, to travel much farther than before. This change set free radiation thatwe can detect today. After billions of years of cooling, this cosmic background radiation is at about 3 K (-270°C/-454°F).The cosmic background radiation was first d...

• Herman Melville I INTRODUCTION Herman Melville These lines (recited by an actor) begin the novel Moby Dick (1851), by Herman Melville.

  short novel Billy Budd in manuscript form. Melville’s death in New York City on September 28, 1891, went virtually unnoticed. None of his books was still in print. VI MELVILLE’S EARLY WORKS With the exception of Mardi , all of Melville’s early books are narratives of maritime adventure based upon his own experiences and on his wide reading. Although London publisher John Murray accepted Typee for his Home and Colonial Library as a strictly factual account of South Seas travel, he was lar...

• Geography - Geography.

  Geographers have developed a standard pattern of map symbols for identifying such cultural features as homes, factories, and churches; dams, bridges, and tunnels;railways, highways, and travel routes; and mines, farms, and grazing lands. C Analyzing Geographic Information Techniques that use mathematics or statistics to analyze data are known as quantitative methods. The use of quantitative methods enables geographers to treat a largeamount of data and a large number of variables in an objectiv...

• United States (Overview) - country.

  parts. IV UNITED STATES PEOPLE When Europeans first reached North America in the 1520s, they encountered other people—Native Americans—and they also encountered a new geography. Someimagined they were entering “a howling wilderness”—an environment filled with exotic flora and fauna but sparsely populated. In reality, they found their way to alandmass that was widely settled. But soon after the Europeans’ arrival, the population of the Americas plummeted, largely because Native Americans lacked...

• 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...

• 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...

• Native American Literature.

  Many Native American writers of the 19th century wrote histories of their tribes. One tribal historian was David Cusick (Tuscarora), whose Sketches of Ancient History of the Six Nations (1827) was the first published tribal history. Tribal histories explained the deep ties that tribes had to their ancestral homelands. Beginning in the 18th century, these ties took on special meaning because the United States government began removing Native Americans from their traditional lands. These removal...

• Solar System - astronomy.

  dwarf planets according to the IAU because they have rounded shapes from their own gravity but have not cleared their neighborhoods in space of other objects—bothorbit through the Kuiper Belt, a region beyond Neptune containing thousands of small icy bodies. Pluto and Eris are composed of layers of ice around a rocky core.Ceres qualifies as a dwarf planet because it is spherical but is found in the asteroid belt, a zone between the orbits of Mars and Jupiter that contains thousands of smallrocky...

• Earthquake.

  III CAUSES Most earthquakes are caused by the sudden slip along geologic faults. The faults slip because of movement of the Earth’s tectonic plates. This concept is called theelastic rebound theory. The rocky tectonic plates move very slowly, floating on top of a weaker rocky layer. As the plates collide with each other or slide past eachother, pressure builds up within the rocky crust. Earthquakes occur when pressure within the crust increases slowly over hundreds of years and finally exceeds...

• History of Astronomy - astronomy.

  Egypt, the Sun was directly overhead at noon. On the same date and time in Alexandria, Egypt, the Sun was about 7 degrees south of zenith. With simple geometryand knowledge of the distance between the two cities, he estimated the circumference of the Earth to be 250,000 stadia. (The stadium was a unit of length, derivedfrom the length of the racetrack in an ancient Greek stadium. We have an approximate idea of how big an ancient Greek stadium was, and based on that approximationEratosthenes was...

• Bible.

  collection of many different books. The Old Testament is by no means a unified book in terms of authorship, date of composition, or literary type; it is instead a veritablelibrary. Generally speaking, the books of the Old Testament and their component parts may be identified as narratives, poetic works, prophetic works, law, or apocalypses.Most of these are broad categories that include various distinct types or genres of literature and oral tradition. None of these categories is limited to the...

• 50 questions EIT

• Kilogram

  This web site will help me with my research project because it allows me to understand all these different ways of finding happiness. Explains multiple different ways on finding happiness such as balancing money and happiness, also having happiness with the people around you. 4. http://content.time.com/time/magazine/article/0,9171,1015832,00.html “The New Science of Happiness” By: Claudia Wallis Published: January 9 th 2005 This article explains to us the science behind happiness. It e...

• Elementary Particles I INTRODUCTION Structure of Matter Modern physics has revealed successively deeper layers of structure in ordinary matter.

  The most fundamental particles that make up matter fall into the fermion category. These fermions cannot be split into anything smaller. The particles that carry theforces acting on matter and antimatter are bosons called force carriers. Force carriers are also fundamental particles, so they cannot be split into anything smaller.These bosons carry the four basic forces in the universe: the electromagnetic, the gravitational, the strong (force that holds the nuclei of atoms together), and the wea...

• I did not know if the baby was making me sick or if your grandfather was.

  For himself? I pulled thebook fromhim.Itwas wetwith tears running downthepages, asifthe book itselfwere crying. Hehid hisface in his hands. Letme see you cry,Itold him. I do not want tohurt you, hesaid byshaking hishead lefttoright. It hurts mewhen youdonot want tohurt me,Itold him. Letme see you cry. He lowered hishands. Onone cheek itsaid YESbackward. Onone cheek itsaid NObackward. Hewas stilllooking down. Now thetears didnot run down hischeeks, butfellfrom hiseyes tothe ground. Letme see you...

• Quark I INTRODUCTION Quark, smallest known building block of matter.

  Constituents of MatterMatter is composed of tiny particles called quarks. Quarks come in six varieties: up (u), down (d), charm (c), strange (s),top (t), and bottom (b). Quarks also have antimatter counterparts called antiquarks (designated by a line over the lettersymbol). Quarks combine to form larger particles called baryons, and quarks and antiquarks combine to form mesons.Protons and neutrons, particles that form the nuclei of atoms, are examples of baryons. Positive and negative kaons aree...

• Aging - biology.

  Different theories have been proposed to explain how SF works. One theory is based on the assumption that aging, and diseases that occur more frequently withadvancing age, are caused by structural damage to cells. This damage accumulates in tiny amounts each time the cell divides, eventually preventing the cell fromcarrying out normal functions. One cause of this damage may be free radicals, which are chemical compounds found in the environment and also generated by normal chemical reactions in...

• Herman Melville.

  information in Omoo , but various religious groups condemned both books for their unfavorable comments on the work and insensitivity of missionaries in the South Seas. Mardi is a philosophical allegory framed by another adventure at sea. The book’s hero, accompanied by characters representing the intellect, poetry, history, and philosophy, searches the world for universal truth. The book is filled with descriptions—intended as allegories—of human customs, religions, governments, and historical...

• Colour and qualia

  Faced with the dilemmas posed by subjective colour for physicalist doctrine, some philosophers opt for eliminativism, the doctrine that subjective colour is not a genuine, or real, phenomenon after all. On this view the source of the puzzle is a conceptual confusion; a tendency to extend our judgments concerning objective colour, what appear to be intrinsic properties of the surfaces of physical objects, onto the properties of our mental states. Once we see that all that is happening ‘inside'...

• Quantum Theory I INTRODUCTION Quantum Theory, in physics, description of the particles that make up matter and how they interact with each other and with energy.

  electron in the same way a particle with momentum would: It bumps the electron and changes the electron’s path. The light is also affected by the collision as though itwere a particle, in that its energy and momentum changes. Momentum is a quantity that can be defined for all particles. For light particles, or photons, momentum depends on the frequency, or color, of the photon, which in turndepends on the photon’s energy. The energy of a photon is equal to a constant number, called Planck’s cons...

• Advertising.

  Advertising agencies make money in a variety of ways. When the agency uses the client’s advertising budget to buy time for an ad on the radio or on television or whenit buys space for an ad in a newspaper or magazine, the media outlet allows the agency to keep 15 percent of the cost of the space or the time as a commission. The15 percent commission has become an advertising industry standard and usually accounts for the largest portion of the agency’s income. Agencies also charge clientsfor the...

• Woodrow Wilson.

  daughters. In 1885 Wilson also accepted a position with the newly opened Bryn Mawr College, a school for women near Philadelphia. Wilson was not particularly patient with womenas intellectual associates and did not enjoy his teaching duties. He was, however, able to pursue his writing. A University Professor In 1888 Wilson left Bryn Mawr for a professorship in history and political economy at Wesleyan University in Connecticut. There, in 1889, he published The State, a lengthy textbook analyz...

• Woodrow Wilson

  daughters. In 1885 Wilson also accepted a position with the newly opened Bryn Mawr College, a school for women near Philadelphia. Wilson was not particularly patient with womenas intellectual associates and did not enjoy his teaching duties. He was, however, able to pursue his writing. A University Professor In 1888 Wilson left Bryn Mawr for a professorship in history and political economy at Wesleyan University in Connecticut. There, in 1889, he published The State, a lengthy textbook analyz...