Friday, December 27, 2019

Essay On Lance Armstrong - 1433 Words

Lance Armstrong Lance Armstrong was born September 18, 1971 in Plano, Texas. Armstrong was always athletic and had quickly discovered that he had a love for triathlons, particularly cycling. By the age of ten he began running and swimming, and at age thirteen he started competing in cycling and triathlons (Osei-Hwere). By the age of sixteen Lance Armstrong was a professional tri-athlete and was the national sprint- course triathlon champion (Osei-Hwere). Armstrong chose to focus on cycling because it was his passion and the event that he was best at. He trained with the U.S. Olympic team in Colorado Springs. He qualified for the 1990 junior world team, where not only did he place eleventh in Road Racing, but he also finished with the best†¦show more content†¦Ã¢â‚¬Å"The Lance Armstrong Foundation has raised almost $500 million and has helped more than 2.5 million people dealing with cancer† (Osei-Hwere). After Armstrong’s struggle with cancer, and his recovery, Armstrong took two years to retrain in order to return to professional cycling. Two short years after being declared cancer free, Armstrong participated in the Tour De France, and won. Armstrong would go on to win the next six consecutive Tour De France races, making him the only participant to hold the honor of winning seven Tour De France titles in a row (Sanderson). According to the article â€Å"Riding Along with Lance Armstrong† â€Å"In June 2012 the U.S. Anti-Doping Agency (USADA) filed charges against Armstrong for violating its performance-enhancing drugs (PEDS) policies and claimed to have a growing amount of evidence against him (Sanderson).† Lance Armstrong was a legendary athlete for over a decade. However, in the end he lost everything due to his decision to participate in unethical activities and use doping to win. Hidden behind the scenes of exceptional performances Lance Armstrong was com mitting many unethical activities. Armstrong used performance enhancing EPO, steroids, growth hormones, and oxygen-boosting blood transfusions (Osei-Hwere). Many of these unethical activities can be classified under the categories of lying, cheating and fraud, and abusive and intimidating behavior. The definition of lying is intending to deceiveShow MoreRelated Lance Armstrong Essay1153 Words   |  5 Pagesthemselves champions of the sport. Lance Armstrong has succeeded so many times in this strenuous sport, that he has earned his title as the greatest cyclist. Lance was born on September 18, 1971 in a tiny suburb of Dallas, Texas called Oak Cliff. Because his mother was pregnant with him when she was only seventeen years old, Lance grew up without a father figure, but to him it did not matter. Soon after, when he turned three, his mother Linda Mooneyham married Terry Armstrong who later became Lances newRead MoreEssay The Leadership of Lance Armstrong1867 Words   |  8 Pagess omeone until you have walked a mile in his shoes. Lance Armstrong, the cyclist who overcame cancer and devoted his life in the foundation he created for cancer patients, is a very good modern example of a visionary leader. Since he survived this disease, his mission in life became to help others have a better chance when fighting with cancer. Still, he is always facing reality, both when he was a patient and now when he helps others fight cancer. Lance never tried to hide the truth either from himselfRead More Lance Armstrong and Overcoming Obstacles Essays3525 Words   |  15 Pagesstrong through the Pyrenees Mountains at remarkable speed, Lance Armstrong approached the tenth stage of the Tour de France. Beginning at an elevation of thirty-three feet above sea level, Armstrong was in sixteenth position with five minutes and fifty-four seconds separating him and the leader. For many this would be an insurmountable amount of time to makeup, especially on a stage containing such a grueling and exhausting climb, but Armstrong saw it a s an opportunity to put his great mountain-climbingRead MoreEssay on Lance Armstrong Case Analysis 21324 Words   |  6 Pagesï » ¿When Bullying Leads to Believing â€Å"Following Lance Armstrong: Excellence Corrupted case study, written by Clayton Rose and Noah Fisher 2014, of Global Research Group for Harvard Business School.† When it came to the sport of cycling, Lance possessed characteristics that made him unique. His ability to take in and use oxygen effectively was higher than an average man by 90% and a trained and active many by 42%. Lance also produced less lactic acid than others, which allowed him to dominate theRead MoreThe Greatest Cycling Doping Scheme Fell Apart Around The Ringleader Essay1686 Words   |  7 PagesIn 2012 the greatest cycling doping scheme fell apart around the ringleader, Lance Armstrong. He was called a cheat, bully, and stripped of all seven of his consecutive Tour De France yellow jerseys. At the heart of all of this was a drug called EPO and a method called blood doping. In an investigation by the International Cycling Union (UCI) they found that the period between 1990 and 2000 to as an â€Å"epo epidemic† (Lodewijkx 3). And even now dozens of professional athletes get banned over the useRead MoreThe Value Of Life : Score 6881 Words   |  4 Pageshe question the value of life? Life has many hardships no matter who you are, even if you are Hamlet. It still has value to it. It teaches you self worth and gratitude because you truly never know what you have until it is no longer there. Lance Armstrong has a difference in regards to his views on the value of life. He looks at life in a positive perspective due to his hardships rather than how he valued it before. Unlike many people, he was given a second chance to live. As a result he valuesRead MoreEthics Argument Essay911 Words   |  4 PagesEthics Argument Essay Jay Bechtel Ethics is the practice of not only understanding where someone is coming from, but also understanding how he or she got there. Former Supreme Court Justice, Potter Stewart, when commenting on ethics, explained that â€Å"ethics† is â€Å"knowing the difference between what you have a right to do, and what is right to do.† Potters expression perfectly parallels to any ethical dilemma, as it is not only correct to bring in different approaches, but also to understand theRead MoreMaslow s Theory Of Learning Design And Delivery2183 Words   |  9 Pagesof Maslow’s hierarch of needs (Maslow 1970). Since its beginning, Maslow’s Hierarch of Needs has made an impact on education (McLeod 2007). As well as lots of support, Maslow’s humanistic approach has faced criticism over the years. The aim of this essay is to evaluate Maslow’s Hierarch of Needs and to discus how teachers as well as trainee teachers can apply knowledge of the theory to understan d their learners better and to motivate them in their learning process. Various researches indicate, ifRead MoreMoby Dick : The Age Of Ecological Crisis3655 Words   |  15 Pages(15-21). Such an existential threat, one that not only threatens humankind but all nonhuman species on the planet makes a deep ecological reading and reaction of such an iconic work of American culture as Moby-Dick imperative and necessary. In this essay, I will therefore conduct a close-reading of Moby-Dick, from what the New Americanist critic Donald Pease refers to as the â€Å"future anterior tense,† in order to raise questions about what readers living in the age of ecological crisis can still learnRead MoreA Critical Analysis Of The Evidence Of Benefit Finding For Individuals With Serious Illness Essay1999 Words   |  8 PagesEvidence of Benefit Finding in Individuals with Serious Illness â€Å"The truth is that cancer was the best thing that ever happened to me. I don’t know why I got the illness, but it did wonders for me, and I wouldn’t want to walk away from it† (Armstrong, 2002). Lance Armstrong’s quote shows how dealing with chronic illness like prostate cancer is not always negative. Chronic illness can be extremely stressful and terrifying. Regardless, many patients still cope effectively and draw positive outcomes from

Thursday, December 19, 2019

Downtown Chicago A Large Percentage Of African American...

Take Chicago for example, Downtown Chicago has a large percentage of African-American community members who are victimized in the city every day. Chicago, in particular, has very high levels of cruel and destruction of property crime, which thus turns into violent gang activity that leads to shootings. These African American community members want to live in a safe, comfortable environment, without their children being harassed by the police. They really just want the necessities that any human would want, â€Å"steady employment, educational opportunities, respectable property values, adequate municipal transportation, air conditioning, and medical assistance† (Crank). More importantly, these families want their children to go to college so they can get away from this kind of lifestyle. Community members do not ask for this way of life. These members living under these circumstances do not do so under personal choice. No African American chose to grow up their kids in poverty because they thought it would satisfy criminal careers, or because they thought a life of poverty seemed acceptable. More importantly, these members did not plan for their children to grow up with an obligation to join gangs, and get shot, or because they wanted to go out begging for money for their children’s funerals that they couldn’t afford, or even because they wanted to experience desperation or hopelessness for the rest of their lives. Certainly African American community members did not ask forShow MoreRelatedJuvenile Crime Is The Number One Priority3511 Words   |  15 Pagesdetailed and protected. However, it does not seem to stop criminals from committing illegal acts, especially for at-risk children in the city of Chicago. According to ABCNews, Chicago’s Murder rate is four time higher than New York City (Rosenzweig). Juvenile gang activities are without a doubt, a reality, and is increasing uncontrollably in the city of Chicago, IL. Even though th ere is no universal definition for â€Å"gang†, the National Institute of Justice, defined it as an association with three or moreRead More Residential Segregation and Social Justice Essays1910 Words   |  8 Pagesdiversity across the country, America’s neighborhoods remain highly segregated along racial and ethnic lines. Residential segregation, particularly between African-Americans and whites, persists in metropolitan areas where minorities make up a large share of the population. This paper will examine residential segregation imposed upon African-Americans and the enormous costs it bears. Furthermore, the role of government will be discussed as having an important role in carrying out efforts towards residentialRead MoreMock Strategic Plan For California Hospital Medical Center Essay3834 Words   |  16 Pages(CHMC) is a member of Dignity health, a California based not-for-profit corporation located in California. Founded in 1986 by the Sisters of Mercy unde r the name Catholic Healthcare West, Dignity health operates hospitals and ancillary services in seventeen different states and it is the fifth largest health system in the nation. CHMC, is located in the South Park district of downtown Los Angeles. It serves the South Central communities of Los Angeles and other neighboring communities. CHMC a 318-bedRead MorePremuim Hair Care Llc Business Plan8525 Words   |  35 Pages|| Premier Hair Care LLC I (â€Å"The First LLC†) is a licensed franchisee doing business as â€Å"The Weave Shop†. This is a retail service business in hair care. The business provides affordable human hair sales and weaves services to moderate income African-American women – The target customers! The proprietary business processes of The Weave Shop were developed to deliver a convenient, consistent, professional, time-sensitive, weave experience. This plan outlines the customer need, the proprietary operationalRead MoreSoc Test9122 Words   |  37 Pages is working with a large sample. is not interested in a random sample. 10 points Question 12 Architecture, hair accessories, and technology are examples of Answer cultural boundaries. tangible culture. nonmaterial culture. material culture. primitive culture. 10 points Question 13 The expansion of the Internet has changed how Americans communicate. The development ofRead MoreMandinka Empire21578 Words   |  87 PagesBound to Africa: the Mandinka Legacy in the New World Schaffer, Matt. History in Africa, Volume 32, 2005, pp. 321-369 (Article) Published by African Studies Association DOI: 10.1353/hia.2005.0021 For additional information about this article http://muse.jhu.edu/journals/hia/summary/v032/32.1schaffer.html Access Provided by your local institution at 03/10/13 1:43PM GMT BOUND TO AFRICA: THE MANDINKA LEGACY IN THE NEW WORLD MATT SCHAFFER I I offer here a theory of â€Å"cultural convergenceRead MoreOne Significant Change That Has Occurred in the World Between 1900 and 2005. Explain the Impact This Change Has Made on Our Lives and Why It Is an Important Change.163893 Words   |  656 Pagesand Community in Autotown, U.S.A. Van Gosse and Richard Moser, eds., The World the Sixties Made: Politics and Culture in Recent America Joanne Meyerowitz, ed., History and September 11th John McMillian and Paul Buhle, eds., The New Left Revisited David M. Scobey, Empire City: The Making and Meaning of the New York City Landscape Gerda Lerner, Fireweed: A Political Autobiography Allida M. Black, ed., Modern American Queer History Eric Sandweiss, St. Louis: The Evolution of an American UrbanRead MoreSamasource Give Work Not Aid8822 Words   |  36 PagesJanah reflected on her most recent visit to Samasource’s delivery centers in Kenya. Founded in September 2008, Samasource connected over 1,500 people living in poverty to work over the Internet. The company secured contracts for digital services from large companies in the United States and Europe, divided the work up into small pieces (called â€Å"microwork†), and then sent it to delivery centers in developing regions of the world for completion through a web-based interface. Samasource, a 501(c)(3) nonprofitRead MoreOpportunities23827 Words   |  96 Pagescompany opened 330 outlets, an average of almost one a day.6 As the business moved into new U.S. and Canadian urban markets, consumer awareness of specialty coffee and the Starbucks brand widened considerably. By the mid-1990s, millions of North Americans associated the company’s name with superior dark-roast coffee, customized espresso drinks, responsive customer service, and an appealing store experience. Alliances with Dreyer’s Grand Ice Cream, Pepsi-Cola Company, Capitol Records, Barnes NobleRead More_x000C_Introduction to Statistics and Data Analysis355457 Words   |  1422 PagesSiemens Award for Advanced Placement in mathematics in 1999. Chris is a frequent contributor to the AP Statistics Electronic Discussion Group and has reviewed materials for The Mathematics Teacher, the AP Central web site, The American Statistician, and the Journal of the American Statistical Association. He currently writes a column for Stats magazine. Chris graduated from Iowa State University with a major in mathematics and, while acquiring graduate degrees at the University of Iowa, concentrated

Wednesday, December 11, 2019

Greenspan Essay Example For Students

Greenspan Essay Greenspan The Case For The Defence In-Depth ReviewMy fascination with the Judicial System Structure of todays society was furthered and strengthened after reading and analyzing the works of Edward Greenspan. This superbly written biography recollecting past cases and important events in Greenspans life allowed myself, the reader, to learn more about Jurisprudence and the Criminal Code. The entire casebook revolves around several main themes including the balance of Positive Natural influences in the courtroom, whether a lawyers consience intervenes with his duty as a counsellor, and the alarming rate of perjury occuring in front of the juries. To be more concise and clear to the point, Greenspans book is a diary of controversial and beneficial issues which have hovered around our criminal courts and will continue to plague and pester them for years to come. By observing and understanding certain issues presented in his book, I was able to comprehend what type of person Greenspan is, what he believes in, what he represents and what he would do for his profession. The wheels of Jurisprudence are always turning, and I came to realise how Greenspan worked and bargained for his status in the country to be solidified. This book also flourished with innovative situations pertaining to the most diversified of criminal charges, to the most uncanny regions of law ever dealt. It was this thorough look at Greenspans life which impressed this reviewer the most. It was quite clear that after the fourth page, I came upon the conclusion that this casebook would create a most influential reaction to anyone who had displayed any interest towards our Law system in general. Part One of the novel, No Little Clients, presents the reader with the authors proposed thesis. His ambition is to defend innocent people accused of crimes. Whether they are innocent or guilty without being proven guilty is irrelevant to Mr. Greenspan. A lawyers consience must not be his deciding factor when advising or counselling a client. This viewpoint is elaborated in Part Two (Not Above The Fray) and explained frivolously by Greenspan himself. Throughout the entire novel, the theme bends and curves itself around different and unavoidable situations, but retains its original meaning that no one is guilty until proven so. Greenspan refers to this phrase countless times and explains to the reader that he will not allow his moral beliefs to conlfict with the path of justice ( delicately and persuasively explained by both Greenspand and the co-author, George Jonas in Parts Four, Five and Six of the novel). Chapter 13, Playing God, emphatically displays Greenspans concern with the treatment of his clients and the decision to push the client until he can make a decision that is in favour with the lawyer himself. The significance of this chapter is that the reader detects the amount of responsibility and endurance is required in order to become a successful pawn of the judicial system. At this point, Greenspans thesis huddles itself around the principle of being a Pawn of the System and only serving the system without prejudice and socialistic conflicts. The authors begin their novel with several different themes which branch out and eventually combine. Walking The High Wire is an excellent chapter which focuses on the effects of intended falsehoods employed by the prosecution. When Greenspan takes on a case where the courtroom is changed into a stage for the benefit of a woman who allegedly is raped by his client, it is later realised that through careful investigation and newly discovered evidence, can the truth be used to assist the defendant in being acquitted. In the chapter And Nothing But The Truth, the author presents a situation where even those who enforce the law may lie to obtain a conviction of an innocent person. When two police officers re-create a false scene for the jury, the reader begins to understand why the author ponders upon different moral questions and creates circumstantial, yet fruitful answers. .u12be38e189c963ad6bc0df93a7657ba3 , .u12be38e189c963ad6bc0df93a7657ba3 .postImageUrl , .u12be38e189c963ad6bc0df93a7657ba3 .centered-text-area { min-height: 80px; position: relative; } .u12be38e189c963ad6bc0df93a7657ba3 , .u12be38e189c963ad6bc0df93a7657ba3:hover , .u12be38e189c963ad6bc0df93a7657ba3:visited , .u12be38e189c963ad6bc0df93a7657ba3:active { border:0!important; } .u12be38e189c963ad6bc0df93a7657ba3 .clearfix:after { content: ""; display: table; clear: both; } .u12be38e189c963ad6bc0df93a7657ba3 { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .u12be38e189c963ad6bc0df93a7657ba3:active , .u12be38e189c963ad6bc0df93a7657ba3:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .u12be38e189c963ad6bc0df93a7657ba3 .centered-text-area { width: 100%; position: relative ; } .u12be38e189c963ad6bc0df93a7657ba3 .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .u12be38e189c963ad6bc0df93a7657ba3 .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .u12be38e189c963ad6bc0df93a7657ba3 .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .u12be38e189c963ad6bc0df93a7657ba3:hover .ctaButton { background-color: #34495E!important; } .u12be38e189c963ad6bc0df93a7657ba3 .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .u12be38e189c963ad6bc0df93a7657ba3 .u12be38e189c963ad6bc0df93a7657ba3-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .u12be38e189c963ad6bc0df93a7657ba3:after { content: ""; display: block; clear: both; } READ: The Concept of Satan in World Religions EssayLike a detective fiction novel, Greenspan proves without a doubt that there is more than meets the eye in accepting and defending a client. As witnessed in the chapter Hi Mom, Guess Whos In Jail, the reader learns about how the media and police almost influence a jury into convicting an innocent man of a murder he did not commit. Although the outcome of some cases is the not always agreeable with the reader, it is usually found to be in the best interest of our Justice system. A Large Blue Suitcase is a particularily intriguing chapter that focuses on how police constables try to reinforce a lie in order to obtain the truth. As quoted by Greenspan himself: The Crown does not win or lose as long as justice truimphs. His constant disagreement with honorable Judges of the court is commonplace in the book and is viewed not as a serious outlook towards certain lordships, but merely as a constant pain for Greenspan. Always equipped with the outgoing, full of energy, enthusiastic type persona, an unfamiliar judge may become easy prey for this bustling attorney. While reading the Justice In High Heels section of the book, Icame across various examples of how society today is being powered by the overwhelming rise of feminist demands. Although Greenspan himself does not prefer to enagage in a verbal or emotional war with many of these women, he does not deny wishing he could just establish a section of the criminal code for them. In the chapter called Out Of The Mouth Of Babes, Greenspan is found defending an alleged rapist who is accused based on the analogy of one person. Even though this alleged rapist is a serving police member, respected member of his community and has a clean record up to this point, he is still nearly accused and sentenced severly. The author solidifies the books reliability and rationality by focusing on issues such as these and elaborating on them. The chapter entitled Going To Bat For The Pitcher was another reliable instance where the reputation, admiration and future of a Baseball Player is in jeopardy due to a po ssible drug possession charge laid against him. Greenspan is not only honoured in defending such a popular client, but lets the reader learn about the difference between a clean record and a blemished one. Murder Or Nothing is perhaps the most relished of chapters in the entire novel due to its shocking approach towards the fine line of self defence and murder. The author takes the time to both reitarate and brief the reader of the circumstances involved, and the possible conclusive outcomes. I found myself amused at decisions which seemed beyond the reach of power for a criminal lawyer, but the educational value of the book was impeccable. Some Time To Kill was a regular Whodunit mystery which can be found as rather frivolous in conclusion while curious in decision. Greenspan is faced with an overwhelming amount of evidence against him that could lead his client to over 25 years in prison, but using his skillful tactics and knowledge of jurisprudence, he wins one of many cases in his long career. Twelve Good Men And True is the only chapter which allowed the reader to sit back and comprehend the situation involving many different solutions to avoid any racial, social or political prej udice of any kind from occuring in our courts today. The Case For The Defence takes a plunge behind the closed doors and allows the author to voice his opinion all the while considering the other side of the coin. Since becoming a lawyer nearly three decades ago, Edward Greenspan has written a juriprudential masterpiece which contains not only a recollection of important case facts and information, but even family based and social events which have changed his life. The reader is allowed to walk through with him as he climbs the ladder of success, while learning about his faults and how he accepts them. Throughout the book, Greenspan uses many sources and references which allow him to successfully solidify and back up any aspect of law he discusses. Even letters and memos sent by respected citizens of society justify how valuable he is to Canada and to those who are in need of a defence lawyer. The effort involved in establishing such a novel must have been quite massive on the part of Greenspan. Apart from digging into the vault of memories and remembering the most pleasurable and painful events, he was extremely careful in avoiding the use of names or places which are best kept off the record. Those who contributed were rewarded with his superlative creation. I would recommend this casebook full of Edward L. Greenspans memories and tales to anyone who seriously wished to pursue Law as an occupation or even a hobby. Apart from the controversial and brilliant decisions incorporated by Canadas fiercest Criminal Lawyer, there is a natural blend of political concern and social structure which comes with the territory. .u012958e48e2b9bf17be04c097a4669df , .u012958e48e2b9bf17be04c097a4669df .postImageUrl , .u012958e48e2b9bf17be04c097a4669df .centered-text-area { min-height: 80px; position: relative; } .u012958e48e2b9bf17be04c097a4669df , .u012958e48e2b9bf17be04c097a4669df:hover , .u012958e48e2b9bf17be04c097a4669df:visited , .u012958e48e2b9bf17be04c097a4669df:active { border:0!important; } .u012958e48e2b9bf17be04c097a4669df .clearfix:after { content: ""; display: table; clear: both; } .u012958e48e2b9bf17be04c097a4669df { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .u012958e48e2b9bf17be04c097a4669df:active , .u012958e48e2b9bf17be04c097a4669df:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .u012958e48e2b9bf17be04c097a4669df .centered-text-area { width: 100%; position: relative ; } .u012958e48e2b9bf17be04c097a4669df .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .u012958e48e2b9bf17be04c097a4669df .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .u012958e48e2b9bf17be04c097a4669df .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .u012958e48e2b9bf17be04c097a4669df:hover .ctaButton { background-color: #34495E!important; } .u012958e48e2b9bf17be04c097a4669df .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .u012958e48e2b9bf17be04c097a4669df .u012958e48e2b9bf17be04c097a4669df-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .u012958e48e2b9bf17be04c097a4669df:after { content: ""; display: block; clear: both; } READ: Breast feeding EssayGreenspan, The Case For The Defence, is the finest biography/casebook I have ever studied thanks to the ever-lasting presence of educational values combined with fascinating jurisprudential events and occurences. It can be said that Justice and Liberty for all can only be achieved through a damn good lawyer!Political Issues Essays

Wednesday, December 4, 2019

One Of The Most Amazing Endeavors Man Has Ever Undertaken Is The Explo

One of the most amazing endeavors man has ever undertaken is the exploration of space. A big part of the amazement is the complexity. Space exploration is complicated because there are so many interesting problems to solve and obstacles to overcome. You have things like: The vacuum of space Heat management problems The difficulty of re-entry Orbital mechanics Micrometeorites and space debris Cosmic and solar radiation Restroom facilities in a weightless environment And so on... But the biggest problem of all is harnessing enough energy simply to get a spaceship off the ground. That is where rocket engines come in. Rocket engines are on the one hand so simple that you can build and fly your own model rockets very inexpensively (see the links at the bottom of the page for details). On the other hand, rocket engines (and their fuel systems) are so complicated that only two countries have actually ever put people in orbit. In this edition of How Stuff Works we will look at rocket engines to understand how they work, as well as to understand some of the complexity. The Basics When most people think about motors or engines, they think about rotation. For example, a reciprocating gasoline engine in a car produces rotational energy to drive the wheels. An electric motor produces rotational energy to drive a fan or spin a disk. A steam engine is used to do the same thing, as is a steam turbine and most gas turbines. Rocket engines are fundamentally different. Rocket engines are reaction engines. The basic principle driving a rocket engine is the famous Newtonian principle that to every action there is an equal and opposite reaction. A rocket engine is throwing mass in one direction and benefiting from the reaction that occurs in the other direction as a result. This concept of throwing mass and benefiting from the reaction can be hard to grasp at first, because that does not seem to be what is happening. Rocket engines seem to be about flames and noise and pressure, not throwing things. So let's look at a few examples to get a better picture of reality: If you have ever shot a shotgun, especially a big 12 guage shot gun, then you know that it has a lot of kick. That is, when you shoot the gun it kicks your shoulder back with a great deal of force. That kick is a reaction. A shotgun is shooting about an ounce of metal in one direction at about 700 miles per hour. Therefore your shoulder gets hit with the reaction. If you were wearing roller skates or standing on a skate board when you shot the gun, then the gun would be acting like a rocket engine and you would react by rolling in the opposite direction. If you have ever seen a big fire hose spraying water, you may have noticed that it takes a lot of strength to hold the hose (sometimes you will see two or three firemen holding the hose). The hose is acting like a rocket engine. The hose is throwing water in one direction, and the firemen are using their strength and weight to counteract the reaction. If they were to let go of the hose, it would thrash around with tremendous force. If the firemen were all standing on skateboards, the hose would propel them backwards at great speed! When you blow up a balloon and let it go so it flies all over the room before running out of air, you have created a rocket engine. In this case, what is being thrown is the air molecules inside the balloon. Many people believe that air molecules don't weigh anything, but they do (see the page on helium to get a better picture of the weight of air). When you throw them out the nozzle of a balloon the rest of the balloon reacts in the opposite direction. Imagine the following situation. Let's say that you are wearing a space suit and you are floating in space beside the space shuttle. You happen to have in your hand a baseball. If you throw the baseball, your body will react by moving away in the opposite direction. The thing that controls the speed at which your body moves away is the weight of