Tuesday, April 21, 2020

The Concept of String Theory

String theory is a concept developed by physicists trying to explain the fundamental nature of matter and space. The concept has various interpretations, but has the ability to explain the phenomenon of existence. Since the most fundamental particles do not exhibit the properties of matter that bigger objects have, some scientists consider them non-dimensional (Van Proeyen 12).Advertising We will write a custom essay sample on The Concept of String Theory specifically for you for only $16.05 $11/page Learn More This means they do not have width, length or depth. General relativity holds that all matter and space exists in four dimensions. Depth, width, and length of all matter and space exist through time (Kane 46). This means that time is the fourth dimension. Distortion of time results in distortion of the other three dimensions, which are the dimensions of space. This is quite different from Newtonian physics, which does not consider time a dimension. However, practical science is based on Newtonian physics. Although the theories of relativity are not applicable in practical science to a satisfactory extent, they are accepted as the true explanations of the phenomenon of existence (Zwiebach 16). The effort to understand the seemingly dimensionless nature of fundamental particles and the four dimensional nature of matter and space in one theory has led to development of string theory. According to string theory, there are other more fundamental dimensions contained in the four dimensions of physical existence that are normally experienced. The additional dimensions add to the four known dimensions to make eleven-dimensional world (Van Proeyen 41). Compression of these dimensions into the fabric of universal existence makes them undetectable by any physical means. However, several mathematical models have been used to prove their existence and the nature of their interaction. The string theory explains the manner in which the one- dimensional basic particles interact to result into a four dimensional existence. Matter, space, and time are a yield of this interaction. Fundamental particles are made up of one-dimensional strings, which interact with unidirectional membranes to create a particle (Zwiebach 18). Gravitational force, a phenomenon that has not yet been understood by scientists is explained as a product of string interaction. Scientists have already developed a mathematical form for gravity. The wave nature of matter is a part of the theory explaining how the fundamental particles exist. One certain kind of wave motion is responsible for all behaviors of matter and space. The string theory is the only theory that offers a single explanation to the nature of matter and space. However, since the theory proposes the existence of dimensions that cannot be physically assessed, it is not possible to test its integrity.Advertising Looking for essay on natural sciences? Let's see if we can help you! Get your first paper with 15% OFF Learn More Other challenging theories have endured criticism to emerge as possible alternatives to the string theory since they can be tested, and have an observable fundamental constant. Advocates of the string theory believe that a universal constant exists within the string theory, but a mathematical proof has not been developed yet (Zwiebach 22). This constant and a testing mechanism for the string theory are the only remaining constituents that can establish the theory as a proven fact. The nine-dimensional vibration of each string is unique and yields the properties of fundamental particles. The ends of a single cosmic string are joined such that an indefinite loop is formed. Forces of interaction attract the string towards the centre of the loop (Van Proeyen 45). This action is responsible for the appearance of fundamental particles as singular points with no dimensions at all. The dimensions of the physical world are fixed in certain d irections according to Newtonian physics. In string theory, dimensions are mathematical representations with no directional properties of the three spatial dimensions. Moreover, these dimensions are compressed into a manifold such that they are not testable by any physical means (Zwiebach 30). This is attributed to the infinitesimal distances that represent the particular dimensions. Since mathematics is largely based on spatial dimensions, there is no method to test the presence of cosmic strings within the current mathematical scope. Several propositions assume that the invisible dimensions are responsible for the unexplained forces that are observed in nature. Electromagnetic wave is assumed to be made up of a certain combinations of the dimensions. Gravity, a force whose presence is established by empirical evidence only, is also considered a product of the additional dimensions (Van Proeyen 15). This is why gravitational force and its characteristics such as inertia do not seem to emanate from any one physical location. The string theory presents a single explanation for existence of all matter and space. Through the string theory, it is possible to understand the relation between space and time. The relative relationship that makes time similar to space can be understood through string theory. The small dimensions of the strings make it impossible to investigate the pattern in which they are woven together (Van Proeyen 7). If a definite pattern in which the strings are woven is identified, it is possible to understand the construction of forces and the difference between various forces. However, the ability to understand the fundamental constituents of time and force can discredit all conventional physics, as it is understood today (Zwiebach 74). Such knowledge could also result in breakdown of phenomena such as the construction of time towards the future.Advertising We will write a custom essay sample on The Concept of String Theory specifically fo r you for only $16.05 $11/page Learn More Works Cited Kane, G. L.. Perspectives on supersymmetry II. Singapore: World Scientific, 2010. Print. Van Proeyen, Antoine. â€Å"A First Course in String Theory.† Intensive Theoretical Studies 5.3 (2008): 5-60. Print. Zwiebach, Barton. A first course in string theory. New York: Cambridge University Press, 2009. Print. This essay on The Concept of String Theory was written and submitted by user Andrew Marks to help you with your own studies. You are free to use it for research and reference purposes in order to write your own paper; however, you must cite it accordingly. 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Friday, April 3, 2020

Most Films, Even The Excellent Ones, Fit Squarely Into An Existing Tra

Most films, even the excellent ones, fit squarely into an existing tradition of cinema. You have seen the same sort of thing before, even though the approach and many aspects of the film are novel. Once in a great while, more often for adventurous movie-goers than for those who see only Hollywood films, you come across something that is really new and different. Even less often, it is new, different, and good. Such a film is like a revelation. The first Kubrick movie one sees, or the first Tarkovsky, or the first Fellini, can be this sort of experience, a sudden broadening of one's private definition of what film is. The cinematic experience of Horse Thief was created by director, Tian Zhuangzhuang, in order to explore the relationship between religion and humans in Tibetan society. A fragmented narrative and minimal dialogue, the Horse Thief deals with the conflict between a Tibetan tribesman, Norbu, who steals horses for a living and his religion. Religion is the controlling force of life in Tibetan society and although Norbu is a thief, he is also a devout Buddhist. His relatively quiet life comes to an end one day when he steals a gift from the government to the monastery, a crime for which he and his family are ostracized and expelled from the tribe. Soon afterwards, Norbu's son dies and his death is interpreted as punishment from God. Although destitute, Norbu gives up his profession. He and his wife become nomads and their wanderings bring them to many major Tibetan festivals. The story is set in Tibet in the 1920's, though it might as well be the 16th century, for all the effect that the modern age has on the area. Despite Norbu's disreputable occupation, he piously contributes the bulk of his spoils to the temple. From this simple situation, a very minimal plot propels the film. But horse thief is not a film to watch for plot. Rather, the film presents a slow, careful revelation of the difficult lives of Tibetans, with emphasis on the vital role of religion in their lives. Practically every action taken by anyone in Horse Thief is directly related either to survival or religion. The land is harsh, and only constant effort permits people to live there. The characters only take time away from this struggle to worship their god. Gradually, as one watches the film, one realizes that the constant attention to worship is an intimate part of survival. Life is so hard that only sacred intervention can save the characters from death. Every turn of the prayer wheel, every ceremonial dance, every sacrifice and devotion has the practical aim of supplicating for the divine intervention that alone can ensure survival. The greatest disasters of the film stem from unluckily angering the deity. One of the most surprising things about this film from the People's Republic of China is that the peasants' attitudes about religion are taken completely at face value. Perhaps Buddha does not exist, and does not intervene in the daily lives of Tibetans, but Horse Thief offers n o evidence that he doesn't, and seems to suggest that he does. Even the unexpected theme of Horse Thief does not capture the importance of this film. The photography and direction are the film's most innovative aspects. Tian Zhuangzhuang, the director, has a unique visual style, favoring long, static shots. The typical presentation of long scenes in most movies is to break the scene into several shots, each taken from a different angle, at a different distance from the subject. Often, the only reason for breaking up the scene is visual interest. The director fears that we will be bored by a single, static shot covering several minutes, so he jazzes the scene up. Taken to the extreme, this approach yields MTV-style films, in which no shot lingers more than a few seconds - editing as rock and roll. Only daring directors will let their camera be still, and then only on the most interesting subjects, as a calculated effect. Tian takes a vastly different approach. He treats the camera as a distant viewer, almost godlike in its unblinking perspective. A shot will last for several minutes, with the action taking