Nuclear Energy Essay Example For Students

Nuclear Energy Essay Word Count: 1748 by definition is the energyconsumed or produced in modifying thecomposition of the atomic nucleus. Nuclear energyis used for things such as atomic bombs, hydrogenbombs and other nuclear weapons. Nuclearenergy can also be used for poweringelectricity-generating plants all over the world. There are many arguments for and against nuclearpower. Nuclear power is an inexpensive cleansource of power. Others feel that because of thehazardous radiation emitted during the producingof the power and the radioactivity of the materialused that nuclear power is not as good as thealternatives which are fossil fuels and solarpower.(Hansen, 1993)If matter changes state or composition, it isaccompanied by the production of energy. Processes such as combustion produce energy byrearranging the atoms or molecules of thatsubstance.(Brain, 1998) An example of this is thecombustion of methane (natural gas) CH(4) + 2O(2) = CO(2) + 2H(2)O + energyIn this example the amount of energy released iseight electron volts or 8 eV. The electron volt unitis the unit used by nuclear physicists. The electronvolt represents the gain in kinetic energy when anelectron is accelerated through a potential drop ofone volt.(Brain, 1998)The most common nuclear reaction is nuclearfission. Nuclear fission is the process in which aheavy nucleus combines with a neutron andseparates the heavy nucleus into two lighternuclei.(Roy, 1993) The most typical fissionreaction is that of uranium-235 it is as follows:92 U235 + 1 neutron = 38 Sr96 + 54 XE138 + 2neutrons + energyAnother type of nuclear reaction is nuclear fusion. Nuclear fusion occurs when two light elementscombine to form a heavier atom.(Grisham, 1993)An example of this is:1 H(2) + 1 H(3) = 2 He(4) +1 neutron + energyNuclear FissionNuclear fission is a complex process, but manyproducts are formed during this process. Not onlythe two nuclei but also neutrons, beta particles,neutrinos and gamma rays are created during thefission process.(Roy, 1993) There are more thanfifty different ways a nucleus may undergo fission. Some of the ways are much more common thanothers. During the fission process the nucleusbreaks into to unequal parts, one lighter fragmentand a heavier fragment. These nuclei are formedwith excess energy that they do not usually have intheir ground state they must lose the extra energy. They release this extra energy in the form ofgamma radiation or sometimes neutron emission. The primary fragments are rich in neutrons and areradioactive. Uranium-235 which contains 92protons and 143 neutrons are more likely to undergo fission when bombarded by low-energyneutrons.(Hansen, 1993)Nuclear Fission Used in BombsThe fission process was discovered in the late1930s. In late 1939 two scientists Otto Frisch andLise Meitner discovered the fissioning of uraniuminto lighter particles while they were doing anexperiment involving neutron irradiation ofuranium. The possibility of a self-sustaining chainreaction was apparent this caused an acceleratedrate of research.(Hansen, 1993)The United States Government researched into thepossible applications of nuclear fission at thebeginning of World War II. In order for theweapon to be able to work properly it wouldrequire a self-sustaining fission reaction to becreated and also that an adequate amount offissionable material could be produced for use in aweapon.(Brain, 1998) On December 2, 1942 atthe University of Chicago Enrico Fe rmi and histeam developed the worlds first self-sustainingreactors. The reactor was fueled with naturaluranium imbedded in graphite blocks.(Hansen,1993) The fission occurred in the isotope ofuranium, U-235. An important factor indeveloping the nuclear bomb was to separateU-235 from U-238. Natural uranium only contains0.7% of U-235 and the remaining 99.3% ofnatural uranium is U-238. The problem with this isthat U-238 does not fission except with very highenergy neutrons which are not available from thefission process. To separate the two materialsgaseous defusion is used. Another way of makingnuclear weapons is to use a different fissionablenucleus. Another material that is used is a syntheticisotope of plutonium P-239. Nuclear FusionIn most fusion reactions after the two atomic nucleimerge together to form a heavier nucleus a freenucleon is also formed. In just about all fusionreactions between light nuclei, a portion of theirrest mass is converted into kinetic energy of thereaction products, or into gamma rays.(Grisham,1993) The kinetic energy and gamma rays that arereleased in the process of fusion, heat the insidekeeping the temperature very high so the fusioncan continue occurring. At thermonucleartemperatures, matter can only exist in the plasmastate. Matter at thermonuclear temperatureconsists of electrons, positive ions and very fewneutral atoms. If fusion reactions occur withinplasma the reactions heat the substance evenmore, because a portion of the reaction energy istransferred to the bulk of the plasma throughcollisions.(Grisham, 1993)Stars produce their energy through many types offusion reactions. Scientists know that fusionreactions have clear potential as a power sourceon earth due to the fact those fusion reactions havebeen driving the stars for billions of years.(Hansen,1993) For many decades now scientists have triedto develop thermonuclear fusion reactions that willproduce useful power. Police Brutality EssayThis idea is highly unlikely because it is the onlypower source for the region.(Hansen, 1993)Nuclear Energy TodayNuclear power has become a major source of theworlds electric energy since the discovery offission 50 years ago. At the end of 1989 therewere 416 nuclear power plants operatingworldwide producing 17% of the worldselectricity. There were 130 plants that were underdesign at the end of 1989. Nuclear power is usedin 27 different nations and another three nationshave plants under construction. The United Stateshas the worlds largest nuclear energy program atthe end of 1989 with 108 operating plants havingthe operating capacity of 100,000 MW providing20% of the U.S. with their power. In 1989 nuclearpower was the second largest source of electricityin the U.S. exceeded only by coal whichcontributes 55% of the U.S.s electricity. Othersources of power are natural gas 9%, oil 6%, andhydro power 9%.(Hansen, 1993) In Ontario 40%of the electricity that is used i s produced bynuclear power. Ontario nuclear power plantsproduce 8728 MW ofelectricity.(www.hydro.on.ca, 1999)Nuclear power plants are more complex and costmore to build than plants that use fossil fuels. Thecost of fuel for nuclear power is much lower thanthe cost of fossil fuel. In the long run nuclearelectricity is much cheaper for most nationsbecause of the differences in fuel prices. Forindustrialized countries of Europe and Asia thedifference in cost may be as large as a factor ofhalf the cost. In some countries the nuclear powerprogram has come to a standstill. In the UnitedStates there hasnt been an order to build anuclear power plant since mid-1970s. The mainreason for the standstill is the move towardsincreased efficiency in the consumption of oil andalso a drop in the demand for energy. The publicis also concerned about the safety of nuclearpower plants and also the increasing awareness ofthe problems with nuclear waste. The reason forthe increase in safety awareness is be cause of theaccidents that have occurred. Before 1979 thepublic was all for nuclear energy but since then areactor in Three Mile Island leaked radioactivematerial into the environment. The largest reasonwhy the public changed their view was theexplosion of reactor four at the Chernobyl powerplant. Nuclear power is an important factor in all of arelives, if it if used safely it provides us withinexpensive electricity but if used carelessly it canmake us ill, destroy the land and even kill us. It isbelieved that in the future nuclear power will besafer for all. The pro and cons of nuclear powerare balanced because it is much more inexpensiveand it will not run out like fossil fuels eventuallywill. Nuclear reactors do not explode all thatoften.

The Madness Of Hamlet By William Shakespeare Essay Example For Students

The Madness Of Hamlet By William Shakespeare Essay Madness is a condition that is often difficult to identify, especially when trying to analyze the behavior of a fictional character in a play that was published in 1603. In the play, Hamlet is asked to avenge his father’s death and to accomplish this task in a less apparent manner, Hamlet decides to put on an antic disposition. The madness of Hamlet is often disputed, for good reason, as his behavior is frequently baffling throughout the play. Shakespeare, the author of this tragic play, leaves the audience to decide whether Hamlet is truly mad or not. However, through careful examination and analysis, it becomes clear that Hamlet’s act of madness was just that—an act. Hamlet’s antic disposition was an act of deception, fabricated to draw attention away from his suspicious activities and his true motives as he tried to gather evidence against Claudius. Hamlet had a method in his madness as it was calculated to be used as a veil to hide behind. People would speak more freely in Hamlet’s presence is they thought he was mad because they would assume that he would not be able to make any sense of their conversation. If Hamlet was caught engaging in suspicious activities or his true motives were revealed, he would be able to feign an episode of madness and, in effect, relieve himself of any suspicion. Shakespeare offers clear evidence pointing to Hamlet’s sanity beginning with the first act of the play. The play begins with the sighting of King Hamlet’s ghost. If Hamlet were the only one to have seen his father’s ghost, the argument for his madness would gain validity. However, the ghost was witnessed by, not one, but three people other than Hamlet. Hamlet’s first soliloquy begins with, â€Å"O that this too sullied flesh would melt,† (1.2. .ment of reason, but rather, he drove himself to that conclusion with intense and distorted emotions. The fact that he was still able to at least come to a decisive conclusion supports the idea that his madness is still an act at this point. All in all, there seems to be much evidence in the play that Hamlet deliberately feigned fits of madness in order to confuse the king and his attendants. There should be no doubt that his madness was an antic disposition. He had asserted his true intention early in the play to throw others off track by veiling himself. Hamlet’s madness was very calculated and methodic and was employed to assist him in fulfilling his motives without suspicion. Hamlet used deception in his antic disposition to draw attention away from his actions and behaviors to relieve himself of any indictments as he tried to exact revenge for his father’s death.

1St Amendment Rigths Essays - Einstein Family, Albert Einstein

1St Amendment Rigths Albert Einstein Albert Einstein was a famous scientist, writer and professor. He was born in Ulm, Germany, on March 24,1879. As a child, Einstein wasn't like the other boys: he hated school but loved math. He was shy, and talked very slowly. He didn't participate in sports but instead played with mechanical toys, put together jigsaw puzzles, built towers and studied nature. At school and home he would ask many questions and because of that everybody thought he was dumb. Once when he was sick in bed, his father Herman, bought him a compass; and Albert asked Why does the needle point to the north? His father didn't know the answer. Herman was calm, friendly and had a black mustache. Einstein also had a brother, Jakob. Studied electrical machinery firm financed by the Kocks. Pauline, Einstein's mother was a cultured women and an excellent pianist. Pauline encouraged Einstein to study the violin along with his scientific ambitions. There was a strong physical resemblance between Einstein and his younger sister Maja, and the two had a close relationship throughout their lives. Maja, also a pianist, married Paul Winteler Einstein childhood friend, Paul Winteler, in 1910 and later moved to the United States. When Einstein was older, he invented electric eye. He also was asked to be the president of Israel, but he refused. When Einstein was a teen-ager he was very interested in science. When he wanted to relax he would play the violin which he started playing at the age of six. The kocks, his mother's family, and the Einstein had lived in Southern Germany for more than a century, selling cloth, farming, and clerking in banks. During their free hours they enjoyed boating on the Danube and walking in the woods. Both families were Jewish . In 1880, when Albert was one year old, his father's business failed and the family moved to Munich, the capital of Bavaria A heavily catholic city, it featured art galleries, breweries and a university. Einstein's father Herman. managed an electrical machinery firm which was financed partly by the Kock family. Einstein's mother Pauline, was a cultured woman and excellent pianist. She was 11 years younger than her husband. Pauline not only motivated her son to encouraged his scientific ambitions. When Einstein was fifteen, his father's business failed again, and the family relocated in Italy, Milan. Einstein stayed behind to complete his education, but soon was asked to live school. He eventually joined his family in Italy. His parents continued to support his scientific interests, however enabling him to study at the Swiss Federal Polytechnic School, or Swiss Federal Institute of Technology, in Zurich. At the institute, Einstein met a petite, dark-haired Mileva Maric, who excelled in mathematics. Albert and Mileva were married on January 6, 1903. Although the couple had two sons, Mileva was dissatisfied with her life. She wanted either a career in her husband's work. After many years of disagreement, the couple divorced in 1919, and Mileva became a university teacher of mathematics. Einstein kept in touch with her and his sons, and in the early 20s, he gave Mileva his entire forty-five thousand dollars Nobel Prize. Han's Albert, Einsteins older son, developed a good relationship with his father. He became a good engineer, and when Einstein moved to United States in 1933, Hans Albert visited him often, ultimately setting here with his own family. Einstein younger son Eduard, began reading Shakespeare at the age of five. He got his father permission to concentrated on music and literature but did not achieve success. Eduard later accused his father of ruining his life a nervous breakdown. Although Einstein rushed to Switzerland when Eduard became ill, neither he nor the psychiatrists were able to help. Eduard lived with his mother until her death, when he was placed in a mental institution. Einstein also proved that matter and energy are really different forms of the same thing, which is the Special Theory of Relativity. Einstein's General Theory of Relativity showed that gravity, too, is relative. Gravity is the force that attracts two bodies of matter toward one another. This theory explained that a person gaining speed would feel *a force exactly like the pull of gravity. In a spaceship without windows, that person would not be able to tell if the ship had started too move faster, or if it were being pulled by gravity from planet of star. In 1929. Einstein had doubts about whether an atomic bomb could really

Florence Kelley essays

Florence Kelley essays Florence Kelley was born in Philadelphia in 1859 into a cultured and affluent family. Her family was actively devoted to social reform. Her father, Congressman William (Pig Iron) Kelley, fought passionately to persuade government to uphold the rights of the poor and weak. He strongly believed that every child in America, whether born rich or poor should be afforded the same opportunities and chances in life. Florence was conditioned from a very early age to despise the sight of little children hard at work. Her father was a dominating influence throughout Florence's life. He taught her to read at the age of seven. He provided books that focused on child labor and children who were far less fortunate1. He took her on a midnight tour of factories where young boys helped in the manufacturing of steel and glass. There she witnessed the deplorable and dangerous conditions children were forced to work under. She often contends that through this experience, she developed her enthusiasm to advocate for child labor reform. She wrote while still a very young woman, "We that are strong, let us bear the infirmities of the weak."2 1 Goldmark, Josephine Clara, "Florence Kelley's Life Story: Impatient Crusader". 1953. University of Illinois Press, Urbana. ISBN# 0-8371-9011-8 2 *idbsu.edu/socwork/dhuff/history/extras/kelly.htm*, "Florence Kelley A Woman of Fierce Fidelity." Florence's mother, Caroline Bartram-Bonsall, lost her parents at a very young age. Caroline's adoptive family Isaac and Elizabeth Pugh, were close friends of her parents. It was through them that Florence was connected to Sarah Pugh. Florence's Great-Aunt Sarah was a leading abolitionist who advocated on behalf of the women's suffrage movement, the oppression of women, free trade, peace, and a single standard of morals for men and women. Sarah was feisty and strong. She confided to Florence that she never used sugar and she only wore li...

Disaster Preparedness & Response Term Paper Example | Topics and Well Written Essays - 500 words

Disaster Preparedness & Response - Term Paper Example These stages are effectively planned by keeping two aspects in mind, the professional and the personal activities that are involved in these four stages. In my opinion, the effect of earthquakes can be effectively minimized by using these steps. The implementation of these stages to help in earthquake destruction is mentioned below. Mitigation is the stage at which the destruction effects are tried to be completely minimized when it comes to the personal aspect. This would involve not buying property in an earthquake-prone area to minimize the disasters caused to homes. Professionally, it is the most cost-effective way to reduce the impact of hazards. Development of earthquake-proof structure in earthquake-prone areas is a kind of structural mitigation. Non-structural professional mitigation would be ensuring the property of earthquake disasters (Jane, 2007). This phase is more about planning what to do when a disaster occurs. For example, the construction of shelters to save from fl oods and hurricanes. This aspect of the emergency management phase can be implemented in the earthquake management as well by building temporary wooden one-floor shelters so that the people who are affected by the earthquake have a temporary place to live. Development of basic necessity kits can also come in a handful as in some areas, the post-earthquake situation is such that there is a huge shortage of food, water etc. The response is the help that is forwarded to the down-trodden people who have experienced the aftermath of a disaster (Damon, 2007). This help may be forwarded by an international organization, or by the people living around or the national government. On a more personal level, this can be evacuation from the earthquake hit the place and move towards a safer area in an automobile. When the immediate steps have been taken, the recovery phase starts. Recovery phase pertains to the long-term development of the area that is hit by the catastrophe (George, 2007). This involves the reconstruction of the material and property that is extensively damaged.

President who Abuses his Executive Order Authority Assignment - 3

President who Abuses his Executive Order Authority - Assignment Example An aggressive president can use his power to establish beneficial acts. By such an act, he might be undermining the constitution of separation of powers but sometimes when power is shared by two governments the justice fails to enact. The executive authority can take decisions in the situation where there is a mandatory need but when implying order for mean motives then definitely he is practically undermining the constitution of separation of powers. The executive authority would not be instructive it was to dispute the lawful goal for which it was established. The executive authority needs to be within the law parameters. Otherwise, the executive authority would be violating the national integrity and the very structure of the political ideology of the government. An executive need to look at the limitation of his power and rightful use of power can only bring about an ideal constituency. As per (Word Press) â€Å"The president must enforce laws that are passed by the formal legislative process as they are written.   If the president does not like a bill passed by Congress or feels it violates the Constitution then the president can veto it before it becomes law†. President cannot necessarily pass orders which are not supported legally however he can use executive orders to modify certain laws which are passed by the constitutions. Question 3: History and practice are useful tools in understanding the Presidents authority, and a Legal framework of analysis exists to help determine issues of validity. Beyond questions of legality, there are many separate but important issues of policy. Two broad policy questions present themselves: (1) whether a given power the President possesses ought to be used to advance a particular policy objective, and (2) whether a particular draft directive effectively advances such a policy goal. Specifically, research any executive orders Pres. Obama has issued and determined if the 2 policy questions in this paragraph  have been met.

C&B (u4ip) Essay Example | Topics and Well Written Essays - 500 words

C&B (u4ip) - Essay Example Lines 18, 19, 20, 22, and 23 are the most important lines on the form that is included in the page below, as these particular lines contain the codes. It is not reasonable, safe, or reliable to expect a billing specialist to remember all of the codes and modifiers that are safe. Therefore, he or she will need a reference guide for this. Since these codes and modifiers are updated occasionally, an online reference guide would be a good resource. One good resource is the website for the Centers for Medicare and Medicaid. In the form below, the website for the Centers for Medicare and Medicaid was used to look up the codes. The diagnosis code for this particular patient matches that of an individual with multiple sclerosis. The codes that follow the diagnosis code are procedural codes that represent the testing that was done during the office visit of that particular patient. There could have also been supply codes included, but no supplies were used in this particular visit that was going to be billed to the insurance company in question. Had there been supplies used, those would need to be included on the form as well. The codes were looked up using a search engine on the website, which provided a page listing the codes for musculoskeletal