Полнотекстовый поиск:
Где искать:
только в названии
только в тексте
слова в тексте
только заголовок

Рекомендуем ознакомиться

Остальные работы->Реферат
An African American is an American of African descent. In the book ?African Americans in the Colonial Era?, told is how this descends came about. When...полностью>>
Остальные работы->Реферат
The War of 1812 also know as “The Second American War for Independance” (Bailey pg. 233) was fought between the meeger forces of the American governme...полностью>>
Остальные работы->Реферат
The Druids is the most common response because the Druids inhabited most of the area in which Stonehenge is built. The Pagans are another common answe...полностью>>
Остальные работы->Реферат
Because the federal government has not strongly enforced Title IX, women all over the country have filed civil rights complaints and lawsuits against ...полностью>>

Главная > Реферат >Остальные работы

Сохрани ссылку в одной из сетей:

The Elegant Universe Essay, Research Paper

Part I: The Edge of KnowledgeChapter 1: Tied Up with StringsThis is the introductory section, where the author, Brian Greene, examines the fundamentals of what is currently proven to be true by experimentation in the realm of modern physics. Green goes on to talk more about “The Basic Idea” of string theory. He describes how physicists are aspiring to reach the Theory of Everything, or T.O.E. Some suspect when string theory is completely understood that it might turn out to become the T.O.E.Part II: The Dilemma of Space, Time, and QuantaChapter 2: Space, Time, and the Eye of the BeholderIn the chapter, Greene describes how Albert Einstein solved the paradox about light. In the mid-1800’s James Maxwell succeeded in showing that light was actually an electromagnetic wave. From this he concluded that light always travels at the speed of light. It never slows down. Einstein asked the question: “What happens if we chase after a beam of light, at light speed?” From reasoning based on Newton’s laws of motion, one can assume that the light would appear stationary. But according to Maxwell’s theory, light cannot be stationary. Einstein solved this problem through his special theory of relativity. Greene continues with his explanations of the special theory of relativity.Chapter 3: Of Warps and RipplesGreen begins the chapter by describing “Newton’s View of Gravity” and continues by discussing the incompatibility of Newtonian Gravity and Special Relativity. The author also talks about how Einstein discovered the link between acceleration and the warping of space and time. Greene also discuses the basic aspects of General Relativity. He later points out how the two theories of relativity effect black holes, the big bang, and the expansion of space.Chapter 4: Microscopic WeirdnessThis chapter describes, in detail, the workings of quantum mechanics. The author tells of how waves are effected by quantum mechanic. He also discusses the fact that electromagnetic radiation, or photons, are actually particles and waves. He continues to discuss how matter particles are also matter, but because of their h bar, is so small, the effects are not seen. Green concludes the quantum mechanics discussion by talking about the uncertainty principle.Chapter 5: The need for a New Theory: General Relativity vs. Quantum MechanicsThis chapter compares the theory of general relativity and quantum mechanics. It shows that relativity mainly concerns that microscopic world, while quantum mechanics deals with the microscopic world. But there are some occasions in which the two can actually contradict each, such as the area around a black hole. That is where superstring theory comes into play.Part III: The Cosmic SymphonyChapter 6: Nothing but Music: The Essentials of Superstring TheoryThis chapter gives a history of where string theory originated and how it has developed over the years. The basic idea of string theory is that all matter is made up of one-dimensional strings. The specific vibrational pattern of the string determines which elementary particle is made from the string. The suspected length of a string 10-33 centimeters. The author also tells of how string theory can unite quantum mechanics and relativity. Brian Greene also describes how, with current technology string theory cannot be directly tested. He also describes how and what happens when strings interact.Chapter 7: The “Super” in SuperstringsIn this chapter, Green discusses supersymmetry of string theory and its effect on it. The author also discusses the three non-gravitational forces: strong force, weak force, and electromagnetic force.Chapter 8: More Dimensions a Than Meet the EyeGreene tells about how string theory allows for more than three spatial dimensions, nine to be exact. He describes how the three dimensions that we live in are extended dimensions and the six other spatial dimensions are curled-up dimensions that are to small for macroscopic objects to exist in. He also describes what these curled-up dimensions may look like. One possible shape is a Calabi-Yau shape.Chapter 9: The Smoking Gun: Experimental SignaturesThe author explains the difficulties of proving string theory by experimentation. He also tells of some steps that might be taken to eventually prove string theory. He also explains that charges on certain particles and how some particles might actually have a fractions of a charge.Part IV: String Theory and the Fabric of Space-timeChapter 10: Quantum GeometryIn this chapter, Greene explains quantum geometry, which is also known as Riemannian Geometry. This geometry fits is based upon the fact that space is not flat. Greene goes on by describing how this geometry fits in with and is affected by string theory. He also talks about wound strings or strings that have wrapped themselves around a dimension.Chapter 11: Tearing the Fabric of SpaceGreene discusses how tearing of space might actually be possible with string theory. He tells of the possibilities of a tear occuring in the fabric of space. He also discusses what steps are being made by physicists to show what happens when a tear forms, such as wormholes. He also tells of his and his colleagues’ experience in proving tears to be possible.Chapter 12: Beyond Strings: In Search of M-TheoryIn this chapter, Greene describes the five different types of string theory. He also tells of how these five types of string theory might make up parts of a whole theory called M-theory. He describes how current methods of approximation used by string theorists, will not be able to complete M-theory. Chapter 13: Black Holes: A String/M-Theory PerspectiveThis chapter compares black holes to elementary particles. The author describes how string theory makes this comparison possible. He also discusses how clack holes are not truly black. Black holes actually give off small amounts of light due to the affect of the intense gravity of a black hole on the surrounding space.Chapter 14: Reflection on CosmologyGreene begins the chapter by telling of the current model of cosmology. He then goes on to describe string theory’s view on the big bang. He also discusses why strings theory allows for on three extended dimensions and how they formed from the big bang. He also gives the idea of a multiverse, or more than one universe. He describes how string theory supports this possibility.Part V: Unification in the Twenty-First CenturyChapter 15: ProspectsThis chapter consists of the authors closing remarks. He talks about what physicists will be looking at in the future with string theory. He, once again, discusses whether or not technology will reach a point where string theory will be able to be tested.

Загрузить файл

Похожие страницы:

  1. The Matrix Essay Research Paper Reality Bytes

    Реферат >> Остальные работы
    The Matrix Essay, Research Paper Reality Bytes: A journey through perceptions of reality in ‘The Matrix ... disease and death as part of a universal harmony. Leibniz concludes ... the mystic elegance of the binary system that counts only the zero and the one, the ...
  2. Pride Essay Research Paper Chapters 14The news

    Реферат >> Остальные работы
    Pride Essay, Research Paper Chapters 1-4 The news that a wealthy young gentleman ... , recognizes that “it is a truth universally acknowledged, that a single man in ... , and taste, and application, and elegance, as you describe, united.” She ...
  3. Marijuana In The New World Essay Research

    Реферат >> Остальные работы
    ... The New World Essay, Research Paper Marijuana in the New World The first definite record of the ... during and after the colonial period by offering heavy ... experimentally grown at the University of Mississippi in ... elegant as this.” The maintenance of secrecy, the ...
  4. The Great Gatsby 14 Essay Research Paper

    Реферат >> Остальные работы
    The Great Gatsby 14 Essay, Research Paper The Value of Jay Gatsby ... Jay Gatsby, who is one of the ... he had gone to Oxford University and how he had ... she was a part of the upper class and acted so elegant. And I feel ...
  5. Life On The Color Line Essay Research

    Реферат >> Остальные работы
    ... Essay, Research Paper Life On The Color Line This is an elegantly written memoir about the ... now the Dean of the College of Law at Ohio State University. His ... and dangerous life. Part of the significance of the book is the author’s ability ...

Хочу больше похожих работ...

Generated in 0.002856969833374