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nuclear energy advantages
Nuclear power cons
pros and cons of nuclear energy
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Abstract
The use of nuclear energy is a big topic for debate. Many countries have fully embraced it while others, such as the U. S., haven’t. Nuclear energy is feared for its danger and scorned because of its wastes. On the other hand, nuclear energy does have some pros like cheaper cost of energy and environmentally safe. Reactor breeders show great promise in nuclear waste, but are it enough to convince the nation?
Introduction
Nuclear knowledge has existed for a long time. Nuclear Engineering U.S. Department of Energy relates, ―By 1900, the physicists knew the atom contains large quantities of energy‖ (par 11). Many others formed good theories, such as Ernest Rutherford and Einstein’s contribution with his equation E=mc^2. In 1934 a physicist known as Enrico Fermi conducted an experiment that resulted in the splitting of atoms. In 1938 two scientists, Otto Hahn and Fritz Strassman, conducted an experiment that was the beginning of a new realization in the nuclear world. Nuclear Engineering U.S. Department of Energy describes, ―Otto Hahn and Fritz Strassman fired neutrons from a source containing the elements radium and beryllium into uranium (atomic number 92)‖ (par 15). The experiment resulted in a new and unexpected out come. The elements that were naturally produced during such experiments weighed only a little less than uranium; whereas, this time the elements were around half as light. They shared their information with Lise Meitner who studied the out come with Neils Bohr and her nephew Otto R. Frisch. The three of them concluded that the light weighted elements were the results of
The Power of Nuclear Energy 3
the uranium splitting also known as fission. Lise Meitner proved this theory using Einstein’s theory.
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...ear energy has many faults, but along with it nuclear energy has many advantages. People need to put aside the fears of nuclear plant that have grown out of tragedies and scares such as Three Miles Island and the Chernobyl Nuclear Power Plant explosion. The Chernobyl has been the only plant that has caused destruction out of over six decades of nuclear power. The nuclear waste can be reused to form more energy using breeder reactors solving most of the waste problem. The costs of nuclear energy are lower than the costs for most other forms of energy. Nuclear energy is constant and not seasonal like solar or wind energy. It is environmentally safe for animals and people living near by. Nuclear energy does not contribute to nuclear energy like coal produced energy. It would be a smart move for our country to move in the direction towards a more nuclear powered nation.
The development of atomic bomb boosted the level of understanding in terms of physics and chemistry of that particular time period. Physicists started to realize that stable nuclei can be converted to unstable nuclei. Through such process, they discovered that heavy nuclei can undergo nuclear fission. While testing, they added a neutron to an isotope of Uranium 235. This resulted Uranium 235 to become unstable and break down into Barium and Krypton, releasing two to three more neutrons. The breakdown of Uranium 235 is called “fission”. When the released neutrons attach to other isotopes of Uranium 235, this can result in a chain reaction of fission. For every generation of fission, the amount of fission is doubled, and this resulted in an extreme outburst of energy. The amount of energy released by this process is related to Einstein’s famous equation “E=mc^2” (Wolf).
Albert Einstein predicted that mass could be converted into energy early in the century and was confirmed experimentally by John D. Cockcroft and Ernest Walton in 1932. In 1939, Otto Hahn and Fritz Strassmann discovered that neutrons striking the element uranium caused the atoms to split apart. Physicists found out that among the pieces of a split atom were newly produced neutrons. These might encounter other uranium nuclei, caused them to split, and start a chain reaction. If the chain reaction were limited to a moderate pace, a new source of energy could be the result. The chain reaction could release energy rapidly and with explosive force.
Non-renewable resources such as fossil fuels have been used up by society on a daily basis and have forced the world to find a new, clean energy source. The rising price of oil and the constant emission of carbon dioxide are proof that in the future our lives will be much harder to live. One answer to this problem is nuclear power, which has shown its efficiency during the times of World War II but has not been used commercially due to the challenges of dealing with nuclear waste and proliferation. In today?s modern era, nuclear power has been used in liquid metal fast breeder reactors, reactors that use uranium-238 to produce plutonium-239.
Enrico Fermi (1901-1954) succeeded in splitting the uranium atom and the Nobel Committee later awarded him the 1938 prize for physics. At Columbia University in New York, Fermi realized that if neutrons are emitted in the fissioning of uranium then the emitted neutrons might proceed to split other uranium atoms, setting in motion a chain reaction that would release enormous amounts of energy.(1) Fermi had succeeded in taking one of the first steps to making an atomic bomb.
After the United States developed the atomic at the end of World War II, interest in nuclear technology increased exponentially. People soon realized that nuclear technology could be used for electricity, as another alternative to fossil fuels. Today, nuclear power has its place in the world, but there is still a lot of controversy over the use of nuclear energy. Things such as the containment of radiation and few nuclear power plant accidents have given nuclear power a bad image. However, nuclear power is a reliable source of energy because it has no carbon emissions, energy is available at any time, little fuel is needed for a lot of energy, and as time goes on, it is becoming safer and safer.
Bohr, proposed that fission more than likely to occur in the uranium-235 isotope, more effectively, with slow-moving neutrons, which became the classical analysis of the fission process
Physicists from 1939 onward conducted much research to find answers to such questions as how many neutrons were emitted in each fission, which elements would not capture the neutrons but would moderate or reduce their velocity , and whether only the lighter and scarcer isotope of uranium (U-235) fissioned or the common isotope (U-238) could be used. They learned that each fission releases a few neutrons.
Overall in the end Nuclear power plants can be seen as a good alternative for energy and also be seen as harmful. Through fission the power plants are able to create electricity through the two types of nuclear reactors, the Pressurized Water Reactor (PWRs) and the Boiling Water Reactor (BWRs). Most states have nuclear power plants now and produce 20% of the nation’s power; around 3 million Americans live within 10 miles of an operating nuclear power plant (Nuclear power plants, n.d.para.1). It does have pros and cons to it but in the end it does create 20% of the nation’s power and the percent is growing.
In December 1938 a German chemist named Otto Hahn was experimenting in his lab. In the late1930s most scientists understood that everything in the universe is made up of little particles called atoms. (Even atoms are made up of little particles.) Hahn, already knew this so he began to experiment by placing a piece of metal called uranium by a radioactive element. He already knew that neutrons would speed out of the radioactive material and hit uranium
Nuclear power has proven before that it can result in tragedy, both seen in the accident in Chernobyl and Fukushima. However, in places such as France and even the University of Maryland, we can see the many advantages that nuclear energy can bring forth, and for different purposes. In both research and energy production, nuclear energy has proven that it can not only improve our health and the economy, but also emit less harmful gases on the environment than fossil fuels. Looking to the future, nuclear energy can easily ascend as a dominant source of electricity – if properly managed. Other sources of energy will slowly deplete and continue to damage the environment and atmosphere. Nuclear power provides a solution to so many of the current energy crisis problems, so it is only a matter of
Today’s world faces many problems. Hunger, war and pollution are some common problems that come to mind. Nuclear energy however, should not have to be one of these problems. Nuclear energy has been around since the early 1950s. Over the years, many have debated whether nuclear-produced energy is any better than other energies such as coal-produced energy. While both sides have their pros and cons, nuclear energy, is the overall worst out of the all the energies being produced.
Nuclear energy has, for some time, been a controversial issue. With incidents like that of Chernobyl, Three Mile Island, and the more recent complications caused by the earthquake and tsunami Fukushima reactors in Japan, concern about the safety of nuclear energy has become a major issue. A lot of this concern probably exists because of a lack of information and education about both radiation and its effects. It is my belief that nuclear power is no less safe than any other form of energy generation, and can produce significant amounts of power.
Almost twenty years after this process of combination was discovered, a group of German scientists created a process of separation, not a slow disintegration like radioactive decay, but a much more dramatic reaction. In 1938, Otto Hahn and Fritz Strassmann, working with Lise Meitner, bombarded uranium with neutrons, releasing energy and causing the uranium atoms to split into multiple parts, the nuclei themselves breaking down to create new nuclei with fewer protons, which were the nuclei of smaller atoms. Hahn, Strassmann, and Meitner had produced nuclear fission, the reaction soon to be used in powerful nuclear weapons and power plants. Hahn and Strassmann made other contributions to nuclear chemistry (Hahn identifying an isotope of uranium, and several other “radioactive substances,” while Strassmann played a role in the development of rubidium-strontium dating), but
Nuclear power is a huge topic and definitely a two sided coin. On one side we have an opportunity of durable sustainable energy. It’s got a lot of risk, but also high reward. With proper waste management, nuclear energy has very low greenhouse gas emissions and relatively low operating costs. Nuclear Energy could be the future as illustrated by the image below, made in 2010 (Nuclear Power and Nuclear Weapons Worldwide).
Media coverage of such cases have made the public less comfortable with the idea of moving further towards nuclear power and they only opt for reducing human activities to reduce global warming. It is true that there have been some notable disasters involving nuclear power, but compared to other power systems, nuclear power has an impressive track record. First, it is less harmful and second, it will be able to cater for the growing world population. Nuclear power produces clean energy and it delivers it at a cost that is competitive in the energy market (Patterson). According to the US Energy Information Administration, there are currently 65 such plants in the Unite States (National Research Council). They produce 19 percent of the total US energy generation.