¶ … Nuclear Energy
Ever since an Italian physicist, Enrico Fermi succeeded in producing the first nuclear chain reaction at the University of Chicago in December of 1942 the usefulness and the drawbacks of nuclear energy have been debated all over the world. While the opponents of nuclear energy point to its enormously destructive power unleashed in atomic bombs, and the potentially harmful effects of radiation that can be released in nuclear reactor accidents and from nuclear waste -- its proponents emphasize the important benefits of the technology such as its application for producing cheap, plentiful and 'clean' electricity. In this paper we shall focus on the benefits of nuclear energy and discuss why we should use it? While doing so we shall also examine the concerns regarding the use of nuclear power and describe ways of overcoming them.
Types of Nuclear Reactions
There are two types of nuclear reactions through which nuclear energy can be released: by fission (splitting) of a heavy nucleus, or by fusion (combining) of two light nuclei. Both processes result in release of enormous amounts of energy since the products of the reactions have a higher binding energy than the reactants. Most present day nuclear reactors are based on the "fission" process. "Fusion" is a promising method of producing energy because fusion does not create radioactive products. However, fusion reactions are difficult to maintain as the nuclei repel each other. ("Nuclear Energy"-Encarta, 2003)
Energy Release in Nuclear Reactions
The major source of energy since the industrial revolution has been fossil fuels -- coal, petroleum, and natural gas. Energy is derived from fossil fuels by burning (a chemical reaction), e.g., when coal is burned heat is released, equivalent to about 1.6 kilowatt-hours per kilogram or about 10 electron volts (eV) per atom of carbon. On the other hand, a nuclear fission reaction releases ten million times as much energy from an equivalent mass of fuel. In practical units, the fission of 1 kg (2.2 lb) of uranium-235 releases 18.7 million kilowatt-hours as heat. (Ibid.) This enormous amount of energy released in a nuclear reaction amply illustrates its destructive potential as well as its potential for producing...
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