The Graviton In elementary school we were taught that gravitation is a get out that attracts all issuance towards each other. Its the condition why the moon about images the Earth, why the Earth field of studys the solarize, why the sun orbits the galactic place of the Milky Way, ect. But not until last school are we given whatever explanation as to what causes gravitational attraction. some see Einstein as the E=mc2 guy, and unless they dont even know what that means (the relation between goose egg and matter). So what does cause gloom? In A legal legal brief History of Time, Stephen Hawking explains that Aristotle believed in four elements; earth, fire, air, and water. Aristotle popular horizon that it was the reputation of involvements made of earth to be pulled back to Earth, heavier things impendent to its center, however as it was fires nature to rise. He theorized that the Earth was a unmoving sphere in space with the heavenly bodies orbiting it in their single spheres. Galileo Galilei proved this scheme wrong when he discover that Jupiter had some(prenominal) moons orbiting it, so not e realthing orbited virtually the Earth. He believed in Nicholas Copernicus, a Polish priest (1473-1543), possibility that the sun was stationary and the planets orbited around it. Sir Isaac Newton published Principia Mathematica in 1687; in it he excellent three laws of graveness and put forth the complex mathematics to analyze movements (specifically of the planets) through space. His equations predicted the orbits of the planets around the sun and the moons orbit around the Earth. It was noticed in the 19th blow by, Urbain jean Joseph LeVerrier, that Mercurys orbit was not fully explained by Newtons laws. Mercurys orbit go a minescule distance with every completion. Many scientists thought that the dis align may be caused by another planet finisher to the sun (the hypothetical planet was named Vulcan). In 1915 a humanne ss by the name of Albert Einstein published ! his customary theory of theory of theory of relativity theory. In it he theorized that space and epoch were one(a) score area, like electromagnetism, called space-time. He said that matter curves space-time and the more than massive the butt the more it curves space-time. Gravity is the effect of that curve, when an object moves through the bent space-time its course through it is altered. If the shrimpy object is close copious and moving fast lavish it may orbit the more massive object, otherwise it hold slingshot around it or plummet towards it. While worldwide relativity deals with the man-sized population quantum mechanism handles the subatomic universe. Quantum mechanics explains three of the four fundamental forces of nature, weak nuclear force, healthy nuclear force, and electromagnetism (gravity being the fourth). A major trouble in theoretical physics is combining universal relativity and quantum mechanics. zero(prenominal)theory has been presen ted that adequately combines quantum mechanics and general relativity and has been proven. caper Stegmaier told me, The thing about quantum mechanics is, it turns everything on its head. Quantum field theory depends on speck fields introduce in the flat space-time of special relativity. General relativity shows gravity as the curve of space-time around a gravitational mass. The most open federal agency to combine these is to treat gravity as another particle field, with an elementary particle for gravity called the graviton. The briny problem with this is that gravity cannot be renormalized. Renormalization is the relationship between large scale parameters and small scale parameters. At low energies, the logical system of the renormalization group tells us that, despite the unknown choices of the unmeasured parameters, quantum gravity will adulterate to the usual theory of general relativity. even so at very high energies every one of the infinite parameters would matter and it would go bad impossible to conciliate any p! redictions. Other theories, such as string theory live with used the graviton defining it differently. Finding, and proving, a theory of quantum gravity is primal to make predictions for science and exploration, also finding a theory to lodge with quantum mechanics would explain all the fundemental forces of nature and how matter is abnormal by them. This would lead to the much sought afterwards theory of Everything (a theoretical theory that explains the entire universe). And finding verification of gravitons is already underway. NASA sent out a Gamma-Ray voluminous compass Space Telescope (GLAST) in 2005 to try to respect the time effects of quantum gravity in the speed of gamma-beam demotes. GLAST is subject to follow high-energy gamma- actinotherapy reveals from massive distances. The bursts are the highest energies in the universe that we consent found, and smaller only then the energy caused by the king-sized bang. Each of them has an estimated power of 1,0 00,000,000,000,000,000,000,000 suns (1 billion x 1 trillion). The musical theme of GLAST is to see if these high-energy bursts are s swallow than those of debase energies, such as quantum gravity predicts. The more energy the burst has the more gravitons (and gravity) should slow it. While we still dont know, for sure, barely what causes gravity we have many, many theories about what it may be and what causes it. Einsteins relativity is the most widely accepted explanation of gravity. This quote, by John Stegmaier, explains it all, The aim of any theory is to explain something, and the ultimate goal of science is to explain everything, and we are well on our way. whole shebang Cited Hawking, S. (1988). A Brief History of Time. New York: Bantam Books. Feynman, R. P.; Morinigo, F. B., Wagner, W. G., & amp; Hatfield, B. (1995). Feynman lectures on gravitation. Addison-Wesley. Michielsen, K., De Raedt, H. Quantum Mecha nics. [Online]. on tap(predicate): <http://rugth3! 0.phys.rug.nl/quantummechanics/> [2008, April 10]. Wanjek, C. Quantum Gravity - revealed by gamma ray bursts? [Online]. Available: <http://www.astronomytoday.com/cosmology/quantumgrav.html> [2008, April 10]. Weinstein, S. Quantum Gravity. [Online]. Available: [2008, April 12]. Raine, D. The British Journal for the philosophical system of Science, Vol. 35, No. 2 (Jun., 1984 ), pp. 188-191. [Online]. Available: [2008, May 8]. Wikipedia. Gravitation. [Online]. Available: [2008, April 10]. Wikipedia. Quantum Gravity. [Online]. Available: < http://en.wikipedia.org/wiki/Quantum_gravity> [2008, April 10]. Wikipedia. Quantum Mechanics. [Online]. Available: < http://en.wikipedia.org/wiki/Quantum_mechanics> [2008, April 10]. If you want to get a full essay, order it on our website: BestEssayCheap.com
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