Genetic Engineering, History And Future Essay Example For Students

Genetic Engineering, History And Future Essay Science is a creature that continues to evolve at a much higher rate than the beings thatgave it birth. The transformation time from tree-shrew, to ape, to human far exceeds the timefrom analytical engine, to calculator, to computer. But science, in the past, has always remaineddistant. It has allowed for advances in production, transportation, and even entertainment, butnever in history will science be able to so deeply affect our lives as genetic engineering willundoubtedly do. With the birth of this new technology, scientific extremists and anti-technologists have risen in arms to block its budding future. Spreading fear by misinterpretationof facts, they promote their hidden agendas in the halls of the United States congress. Geneticengineering is a safe and powerful tool that will yield unprecedented results, specifically in thefield of medicine. It will usher in a world where gene defects, bacterial disease, and even agingare a thing of the past. By understanding genetic engine ering and its history, discovering itspossibilities, and answering the moral and safety questions it brings forth, the blanket of fearcovering this remarkable technical miracle can be lifted. The first step to understanding genetic engineering, and embracing its possibilities forsociety, is to obtain a rough knowledge base of its history and method. The basis for altering theevolutionary process is dependant on the understanding of how individuals pass oncharacteristics to their offspring. Genetics achieved its first foothold on the secrets of naturesevolutionary process when an Austrian monk named Gregor Mendel developed the first laws ofheredity. Using these laws, scientists studied the characteristics of organisms for most of thenext one hundred years following Mendels discovery. These early studies concluded that eachorganism has two sets of character determinants, or genes (Stableford 16). For instance, inregards to eye color, a child could receive one set of genes from his father that were encoded oneblue, and the other brown. The same child could also receive two brown genes from his mother. The conclusion for this inheritance would be the child has a three in fou r chance of havingbrown eyes, and a one in three chance of having blue eyes (Stableford 16). Genes are transmitted through chromosomes which reside in the nucleus of every livingorganisms cells. Each chromosome is made up of fine strands of deoxyribonucleic acids, orDNA. The information carried on the DNA determines the cells function within the organism. Sex cells are the only cells that contain a complete DNA map of the organism, therefore, thestructure of a DNA molecule or combination of DNA molecules determines the shape, form, andfunction of the organisms offspring (Lewin 1). DNA discovery is attributed to the researchof three scientists, Francis Crick, Maurice Wilkins, and James Dewey Watson in 1951. Theywere all later accredited with the Nobel Price in physiology and medicine in 1962 (Lewin 1). The new science of genetic engineering aims to take a dramatic short cut in the slowprocess of evolution (Stableford 25). In essence, scientists aim to remove one gene from anorganisms DNA, and place it into the DNA of another organism. This would create a new DNAstrand, full of new encoded instructions; a strand that would have taken Mother Nature millionsof years of natural selection to develop. Isolating and removing a desired gene from a DNAstrand involves many different tools. DNA can be broken up by exposing it to ultra-high-frequency sound waves, but this is an extremely inaccurate way of isolating a desirable DNA section (Stableford 26). A more accurate way of DNA splicing is the use of restrictionenzymes, which are produced by various species of bacteria (Clarke 1). The restrictionenzymes cut the DNA strand at a particular location called a nucleotide base, which makes up aDNA molecule. Now that the desired portion of the DNA is cut out, it can be joined to anotherstrand of DNA by using enzymes called ligases. The final important step in the creation of anew DNA strand is giving it the ability to self-replicate. This can be accomplished by usingspecial pieces of DNA, called vectors, that permit the generation of multiple copies of a totalDNA strand and fusing it to the newly created DNA structure. Another newly developedmethod, called polymerase chain reaction, allows for faster replication of DNA strands and doesnot require the use of vectors (Clarke 1). The possibilities of genetic engineering are endless. Once the power to control theinstructions, given to a single cell, are mastered anything can be accomplished. For example,insulin can be created and grown in large quantities by using an inexpensive gene manipulationmethod of growing a certain bacteria. This supply of insulin is also not dependant on the supplyof pancreatic tissue from animals. Recombinant factor VIII, the blood clotting agent missing inpeople suffering from hemophilia, can also be created by genetic engineering. Virtually allpeople who were treated with factor VIII before 1985 acquired HIV, and later AIDS. Beingcompletely pure, the bioengineered version of factor VIII eliminates any possibility of viralinfection. Other uses of genetic engineering include creating disease resistant crops, formulatingmilk from cows already containing pharmaceutical compounds, generating vaccines, andaltering livestock traits (Clarke 1). In the not so distant future, genetic engine ering will becomea principal player in fighting genetic, bacterial, and viral disease, along with controlling aging,and providing replaceable parts for humans. Medicine has seen many new innovations in its history. The discovery of anestheticspermitted the birth of modern surgery, while the production of antibiotics in the 1920sminimized the threat from diseases such as pneumonia, tuberculosis and cholera. The creationof serums which build up the bodies immune system to specific infections, before being laid lowwith them, has also enhanced modern medicine greatly (Stableford 59). All of these discoveries,however, will fall under the broad shadow of genetic engineering when it reaches its apex in themedical community. Life Through My Eyes Essay The evolution of man can be broken up into three basic stages. The first, lasting millionsof years, slowly shaped human nature from Homo erectus to Home sapiens. Natural selectionprovided the means for countless random mutations resulting in the appearance of such humancharacteristics as hands and feet. The second stage, after the full development of the humanbody and mind, saw humans moving from wild foragers to an agriculture based society. Naturalselection received a helping hand as man took advantage of random mutations in nature and bredmore productive species of plants and animals. The most bountiful wheats were collected andre-planted, and the fastest horses were bred with equally faster horses. Even in our recenthistory the strongest black male slaves were mated with the hardest working female slaves. Thethird stage, still developing today, will not require the chance acquisition of super-mutations innature. Man will be able to create such super-s pecies without the strict limitations imposed bynatural selection. By examining the natural slope of this evolution, the third stage is a naturaland inevitable plateau that man will achieve (Stableford 8). This omniscient control of ourworld may seem completely foreign, but the thought of the Egyptians erecting vast pyramidswould have seem strange to Homo erectus as well. Many claim genetic engineering will cause unseen disasters spiraling our world intochaotic darkness. However, few realize that many safety nets regarding bioengineering arealready in effect. The Recombinant DNA Advisory Committee (RAC) was formed under theNational Institute of Health to provide guidelines for research on engineered bacteria forindustrial use. The RAC has also set very restrictive guidelines requiring Federal approval ifresearch involves pathogenicity (the rare ability of a microbe to cause disease) (Davis, Roche69). It is well established that most natural bacteria do not cause disease. After many years ofexperimentation, microbiologists have demonstrated that they can engineer bacteria that are justas safe as their natural counterparts (Davis, Rouche 70). In fact the RAC reports that there hasnot been a single case of illness or harm caused by recombinant engineered bacteria, and theynow are used safely in high school experiments (Davis, Rouche 69). Scientists have alsodevised other methods of preventing bacteria from escaping their labs, such as modifying thebacteria so that it will die if it is removed from the laboratory environment. This creates a shieldof complete safety for the outside world. It is also thought that if such bacteria were to escape itwould act like smallpox or anthrax and ravage the land. However, laboratory-created organismsare not as competitive as pathogens. Davis and Roche sum it up in extremely laymens terms,no matter how much Frostban you dump on a field, its not go ing to spread (70). In factFrostbran, developed by Steven Lindow at the University of California, Berkeley, was sprayed ona test field in 1987 and was proven by a RAC committee to be completely harmless (Thompson104). Fear of the unknown has slowed the progress of many scientific discoveries in the past. The thought of man flying or stepping on the moon did not come easy to the average citizens ofthe world. But the fact remains, they were accepted and are now an everyday occurrence in ourlives. Genetic engineering too is in its period of fear and misunderstanding, but like every greatdiscovery in history, it will enjoy its time of realization and come into full use in society. Theworld is on the brink of the most exciting step into human evolution ever, and throughknowledge and exploration, should welcome it and its possibilities with open arms. Works CitedClarke, Bryan C. Genetic Engineering. Microsoft (R) Encarta. Microsoft Corporation, Funk ; Wagnalls Corporation, 1994. Davis, Bernard, and Lissa Roche. Sorcerers Apprentice or Handmaidento Humanity. USA TODAY: The Magazine of the American Scene GUSA 118Nov 1989: 68-70. Lewin, Seymour Z. Nucleic Acids. Microsoft (R) Encarta. MicrosoftCorporation, Funk ; Wagnalls Corporation, 1994. Stableford, Brian. Future Man. New York: Crown Publishers, Inc., 1984. Thompson, Dick. The Most Hated Man in Science. Time 23 Dec 4 1989:102-104Words/ Pages : 3,096 / 24

Multi Media Tools Design And Development Essays - Windows Games

Multi Media Tools Design And Development Necronomicon Ex Mortis Jay A With Multimedia is present in almost all aspects of life, entertainment, learning and instruction, information, and sales. This paper will focus on only one of these, the field of entertainment and will show how each aspect; text, graphics, animation, audio, photography and video not only relate to one another but also are dependent on each other to bring about a successful game. Entertainment software is designed to submerse a player in a new environment, be it fantasy, simulation or, in this case, action/adventure and can do so only by close teamwork in each of the six aspects of multimedia mentioned above. TEXT Each game is a miniature interactive movie, and therefore must have a background, a starting point, middle and an ending. In this aspect a script must be written. A script needs a writer and with this game the designers were able to bring back the original writer of the movie that this game is based on. Having a sizeable fan base the designers felt in necessary to keep true to the story line and feel of the movie. Included with the script for the game a writer must also take into account a voice over script for the actors, as well as background story. This is quite evident in the opening sequence of the game. It flawlessly pulls you into the story with a short monologue by the voice over actor and a stunning array of images that could only be brought to life through the writing of a good script. To do this you need to write, and then re-write a story line, receive feedback and then finalize a solid script acceptable to the producers, actors and last but not least the players. AUDIO Audio plays a very important role in the gamers world, from cues and musical clues to atmospheric sounds, ambient music as well as a full orchestra for the cut scenes and key movies to give a full cinematic experience to the player and further immerse them into this world. Tommy Tallibico was the person in charge of this great task has accomplished this through actually composing and recording the various sounds, music, and clues and then playing them back on a tape recorder as the game is played to get a feel for how they will affect the players experience. Bruce Campbell the actor that played Ash, the movies lead, was brought in to record voice comments for the game. The voice over script must ?completely capture the voice of Ash? and convey what he is feeling at any given point in the game. According to Scott Krager, the executive producer for THQ, Bruce and Ash are not too different from each other so the transformation was painless. All audio for the game were created and edited using ProTools and Digital ProPerformer, two high-end sound recording and editing programs. GRAPHICS, ANIMATION, PHOTOGRAPHY and VIDEO Graphics, animation, and video are a huge part of the player's experience, and with this game are all closely related to each other. Environment, the woods, buildings and other background miscellany you see as you move about the game, were first sketched out on paper and then digitized for use on the computer using various programs such as Renderman, for rendering and pre-rendering of digital backgrounds. The animation of characters that couldn't be filmed, such as monsters and evil spirits, plus all of the gore were created using programs such as Maya, Photoshop and Mira. This assures that no actors could be hurt in dangerous special effects scenes or stunts. All effects were created using After Effects Shake and Inferno to complete a package that not only draws you into, but makes you want to return to, the game. Graphics are also very important in the aspects of sales, a package must grab your attention from a shelf containing hundreds of other titles and make you want to buy it without actually playing it. Video and photography were used extensively to create true- to-life movement of the characters. These were then digitized and inserted into the game. A process known as green screen or sometimes, blue screen, was used to record a characters movements against a monochromatic background onto video and then, using

7 Top Tips for Picking a Dissertation Title - Proofed

7 Top Tips for Picking a Dissertation Title - Proofed 7 Top Tips for Picking a Dissertation Title You only get once chance to make a first impression, so when writing a dissertation it helps if you pick a good title. And while the title of your paper won’t determine whether you pass or fail, the information you provide therein can make your work easier to follow for the reader. To make sure you set out on the right foot, the title of your dissertation should be clear and informative. It helps to think about what you want your reader to know from the moment they pick up your work (unlike a good novel, your dissertation doesn’t need a twist ending). So here are a few things to consider when picking a title for your dissertation. 1. What Is Your Research About? The most vital thing that any dissertation title can do is communicate the topic and focus of your research. This includes the general area you’re researching and the specific aspect of this being investigated. So in a dissertation called â€Å"Barriers to Using Social Media in Marketing a Luxury Fashion Brand,† the topic would be the marketing of luxury fashion brands and the focus would be the factors preventing the use of social media. 2. Your Research Approach The research approach you choose has a major impact on the results you achieve and it can help to include this in your title. For example, if you have conducted a large-scale survey of management strategy, you might pick a title such as â€Å"Management Strategy: A Quantitative Study of Current Practice.† 3. The Outcomes of Your Research The more specific the better, especially when it comes to the results of your research. Rather than calling your dissertation â€Å"Factors Influencing Recovery from Anterior Cruciate Ligament Injuries,† it makes sense to specify the kind of factors being investigated. Are they success factors? Factors which impede recovery? Stating this in the title means your reader will know immediately. If you include the information above, your dissertation title will be on the right track. But to get things perfect you should also keep the following tips in mind: 4. Clarity Seeking a second opinion can be helpful, so try asking a friend or professor to check your title for clarity. It is also advisable to avoid acronyms in titles for this reason. 5. Focus Overly long titles can be confusing or off-putting. Regardless of how good the work is, for instance, only the most dedicated are going to want to read a paper called â€Å"In silico exploration of the fructose-6-phosphate phosphorylation step in glycolysis: genomic evidence of the coexistence of an atypical ATP-dependent along with a PPi-dependent phosphofructokinase in Propionibacterium freudenreichii subsp. shermanii.† 6. Format Check your college’s style guide for how to format your title, as different institutions have different requirements when it comes to factors like capitalization. 7. Uniqueness and Humor Generally it is good if your title makes your dissertation stand out. It is also tempting to use a humorous title, though this is best saved for when writing for a popular audience. Neither uniqueness nor humor, however, should come at the expense of clarity and communicating important details about your work. Hopefully these tips will have helped you come to a decision over your dissertation title. But if not, then our expert proofreaders here at Proofed can let you know of any issues to do with clarity or accuracy in the title and headings of your dissertation, as well as providing a variety of services to ensure the quality of your work.

Polands Count Casimir Pulaski and His Role in the American Revolution

Polands Count Casimir Pulaski and His Role in the American Revolution Count Casimir Pulaski was a noted Polish cavalry commander who saw action during conflicts in Poland and later served in the American Revolution. Early Life Born March 6, 1745, in  Warsaw, Poland, Casimir Pulaski was the son of Jozef and Marianna Pulaski. Schooled locally, Pulaski attended the college of Theatines in Warsaw but did not complete his education. The Advocatus of the Crown Tribunal and the Starosta of Warka, Pulaskis father was a man of influence and was able to obtain for his son the position of page to Carl Christian Joseph of Saxony, Duke of Courland in 1762. Living in the dukes household in Mitau, Pulaski and the remainder of the court were effectively kept captive by the Russians who held hegemony over the region. Returning home the following year, he received the title of starost of ZezuliÅ„ce. In 1764, Pulaski and his family supported the election of StanisÅ‚aw August Poniatowski as King and Grand Duke of the Polish-Lithuanian Commonwealth. War of the Bar Confederation By late 1767, the Pulaskis had become dissatisfied with Poniatowski who proved unable to curb Russian influence in the Commonwealth. Feeling that their rights were being threatened, they joined with other nobles in early 1768 and formed a confederation against the government. Meeting at Bar, Podolia, they formed the Bar Confederation and began military operations. Appointed as a cavalry commander, Pulaski began agitating among government forces and was able to secure some defections. On April 20, he won his first battle when he clashed with the enemy near PohoreÅ‚e and achieved another triumph at Starokostiantyniv three days later. Despite these initial successes, he was beaten on April 28 at Kaczanà ³wka.  Moving to Chmielnik in May, Pulaski garrisoned the town but was later compelled to withdraw when reinforcements for his command were beaten. On June 16, Pulaski was captured after attempting to hold the monastery in Berdyczà ³w. Taken by the Russians, they freed him on June 28 after forcing him to pledge that he would not play any further role in the war and that he would work to end the conflict. Returning to the Confederations army, Pulaski promptly renounced the pledge stating that it had been made under duress and therefore was not binding. Despite this, the fact that he had made the pledge reduced his popularity and led some to question whether he should be court-martialed. Resuming active duty in September 1768, he was able to escape the siege of Okopy Ã…Å¡wiÄ™tej Trà ³jcy early the following year. As 1768 progressed, Pulaski conducted a campaign in Lithuania in the hopes of inciting a larger rebellion against the Russians. Though these efforts proved ineffective, he succeeded in bringing 4,000 recruits back for the Confederation. Over the next year, Pulaski developed a reputation as one of the Confederations best field commanders. Continuing to campaign, he suffered a defeat at the Battle of Wlodawa on Sept. 15, 1769, and fell back to  Podkarpacie to rest and refit his men. As a result of his achievements, Pulaski received an appointment to the War Council in March 1771. Despite his skill, he proved difficult to work with and often preferred to operate independently rather than in concert with his allies. That fall, the Confederation commenced a plan to kidnap the king. Though initially resistant, Pulaski later agreed to the plan on the condition that Poniatowski was not harmed. Fall from Power Moving forward, the plot failed and those involved were discredited and the Confederation saw its international reputation damaged. Increasingly distancing himself from his allies, Pulaski spent the winter and spring of 1772 operating around CzÄ™stochowa. In May, he departed the Commonwealth and traveled to Silesia. While in Prussian territory, the Bar Confederation was finally defeated. Tried in absentia, Pulaski was later stripped of his titles and sentenced to death should he ever return to Poland. Seeking employment, he unsuccessfully attempted to obtain a commission in the French Army and later sought to create a Confederation unit during the Russo-Turkish War. Arriving in the Ottoman Empire, Pulaski made little progress before the Turks were defeated. Forced to flee, he departed for Marseilles.   Crossing the Mediterranean, Pulaski arrived in France where he was imprisoned for debts in 1775. After six weeks in prison, his friends secured his release. Coming to America In late summer 1776, Pulaski wrote to the leadership Poland and asked to be allowed to return home. Not receiving a reply, he began to discuss the possibility of serving in the American Revolution with his friend Claude-Carloman de Rulhià ¨re. Connected to the Marquis de Lafayette and Benjamin Franklin, Rulhià ¨re was able to arrange a meeting. This gathering went well and Franklin was highly impressed with the Polish cavalryman. As a result, the American envoy recommended Pulaski to General George Washington and provided a letter of introduction stating that the count was renowned throughout Europe for the courage and bravery he displayed in defense of his countrys freedom. Traveling to Nantes, Pulaski embarked aboard Massachusetts and sailed for America. Arriving at Marblehead, MA on July 23, 1777, he wrote to Washington and informed the American commander that I came here, where freedom is being defended, to serve it, and to live or die for it. Joining the Continental Army Riding south, Pulaski met Washington at the armys headquarters at Neshaminy Falls just north of Philadelphia, PA. Demonstrating his riding ability, he also argued the merits of a strong cavalry wing for the army. Though impressed, Washington lacked the power to give the Pole a commission and a result, Pulaski was forced to spend the next several weeks communicating with the Continental Congress as he worked to secure an official rank. During this time, he traveled with the army and on Sept. 11 was present for the Battle of Brandywine. As the engagement unfolded, he requested permission to take Washingtons bodyguard detachment to scout the American right. In doing so, he found that General Sir William Howe was attempting to flank Washingtons position. Later in the day, with the battle going poorly, Washington empowered Pulaski to gather available forces to cover the American retreat. Effective in this role, the Pole mounted a key charge which aided in holding back the British. In recognition of his efforts, Pulaski was made brigadier general of cavalry on Sept. 15. The first officer to oversee the Continental Armys horse, he became the Father of the American Cavalry. Though only consisting of four regiments, he immediately began devising a new set of regulations and training for his men. As the Philadelphia Campaign continued, he alerted Washington to the British movements that resulted in the abortive Battle of the Clouds on Sept. 15. This saw Washington and Howe briefly meet near Malvern, PA before torrential rains halted the fighting. The following month, Pulaski played a role at the Battle of Germantown on Oct. 4. In the wake of the defeat, Washington withdrew to winter quarters at Valley Forge. As the army encamped, Pulaski unsuccessfully argued in favor of extending the campaign into the winter months. Continuing his work to reform the cavalry, his men were largely based around Trenton, NJ. While there, he aided Brigadier General Anthony Wayne in a successful engagement against the British at Haddonfield, NJ in February 1778. Despite Pulaskis performance and a commendation from Washington, the Poles imperious personality and poor command of English led to tensions with his American subordinates. This was reciprocated due to late wages and Washingtons denial of Pulaskis request to create a unit of lancers. As a result, Pulaski asked to be relieved of his post in March 1778. Pulaski Cavalry Legion Later in the month, Pulaski met with Major General Horatio Gates in Yorktown, VA and shared his idea of creating an independent cavalry and light infantry unit. With Gates aid, his concept was approved by Congress and he was permitted to raise a force of 68 lancers and 200 light infantry. Establishing his headquarters at Baltimore, MD, Pulaski began recruiting men for his Cavalry Legion. Conducting rigorous training through the summer, the unit was plagued by a lack of financial support from Congress. As a result, Pulaski spent his own money when necessary to outfit and equip his men. Ordered to southern New Jersey that fall, part of Pulaskis command was badly defeated by Captain Patrick Ferguson at Little Egg Harbor on Oct. 15. This saw the Poles men surprised as they suffered more than 30 killed before rallying. Riding north, the Legion wintered at Minisink. Increasingly unhappy, Pulaski indicated to Washington that he planned to return to Europe. Interceding, the American commande r convinced him to stay and in February 1779 the Legion received orders to move to Charleston, SC. In the South Arriving later that spring, Pulaski and his men were active in the defense of the city until receiving orders to march to Augusta, GA in early September. Rendezvousing with Brigadier General Lachlan McIntosh, the two commanders led their forces towards Savannah in advance of the main American army led by Major General Benjamin Lincoln. Reaching the city, Pulaski won several skirmishes and established contact with Vice Admiral Comte dEstaings French fleet which was operating offshore. Commencing the Siege of Savannah on September 16, the combined Franco-American forces assaulted the British lines on Oct. 9. In the course of the fighting, Pulaski was mortally wounded by grapeshot while leading a charge forward. Removed from the field, he was taken aboard the privateer Wasp which then sailed for Charleston. Two days later Pulaski died while at sea. Pulaskis heroic death made him a national hero and a large monument was later erected in his memory in Savannahs Monterey Square. Sources NPS: Count Casimir PulaskiPolish-American Center: Casimir PulaskiNNDB: Casimir Pulaski

Marketing plan Essay Example | Topics and Well Written Essays - 750 words - 2

Marketing plan - Essay Example With a range of popular brands in the FMCG sectors including: Americana Meat, Americana Cake, Farm Frites, California Garden, Greenland, Lion, Kiko, Gulfa, Americana has a great chance to expand their presence and to reach more consumers in one of the biggest and most complicated markets in the world. In the UK market, the target market for the â€Å"HALAL† brand will be the Muslim people who immigrants whose number has greatly increased due to their settlement in the country decades ago. We will also target the Muslim business people who have been moved to the country by multinational companies that have invested in the country. Therefore, Halal will target these two groups of Muslims who still holds on to their religion and its teachings. As a result, they are willing to spend their income on foods that is stipulated in the Quran to constitute a lawful meet among the Muslim religion. In the UK, we will modify our brand positioning. The new Brand position to be adopted is the provision of a lawful meat among the Muslim religion. In addition, UK being a highly stable economy with high minimum wage, we will still adopt the pricing the product high to presage the quality of the product because consumers have high disposable income and high spending level (Cadogan, 2009). Several methods of communication will be used in relaying messages to the respective consumers informing them how the product is of high value to their religion. In short, Americana will position themselves in the UK market as a convenient, healthy, tasty, nutrient, and high-quality and high value to Muslim religion brand. In addition, the Americana meat products will be linked with indulgence and health benefits. In the UK, we will launch the product under the same brand name. This is so because such brands are well established and are therefore recognised widely by all the Muslims. Changing the

CIS212 U3 Discussion Essay Example | Topics and Well Written Essays - 250 words

CIS212 U3 Discussion - Essay Example t RBAC has ease of management while DAC is complicated since each new user has to go through all the details the user needs access to and add them to the list. Authentication provides a way of identifying a user by having them enter a valid username and password before access is granted. If the identifications do not match, authentication fails hence permission is denied to access the information. Its purpose is to prevent unauthorized users to access information that they are not entitled to access. Certificates provide secure communications across untrusted of vulnerable networks. They are important in securing wireless local area networks. One of the advantages of using certificates is that it ensures that any data sent online is read by only the intended recipients. This is because for that data to reach the recipients, it might have to pass through multiple computers. It also improves customer’s trust. One of the disadvantages of using certificates is that it makes the connections to slow down. Getting certificates for a business can be expensive since the service providers have to pay for its maintenances; therefore it might b e viable for small scale

The length of the wire Essay Example for Free

The length of the wire Essay Affected by the length of the wire. I will be investigating by using three types of wire Thin, Thick and finally an even thicker wire then second time around. I will be also recording my results by taking down what the volt meter displays and what the Ammeter displays. I will be recording the results for each wire and also I will be increasing the wires thickness after I measure 10cm of length each time having taken down the results. Apparatus: Meter Ruler- Safety Goggles- Cell- Wire- Crocodile Clips- Ammeter- A Voltmeter- V Plan. For the following experiment my plan will be to firstly wire up all the appliances to create a circuit then I will predict whether the resistance increases or whether it does not increase while the wire increases. I will carry out the experiment increasing the length of the wire by 10cm each time I will then take down the results of the voltage, current. To measure the voltage I will use a Voltmeter to measure the Voltage, to measure the length of the wire I will use a meter ruler and finally to measure the current I will use a Amp meter. After gaining these results I will work out the resistance using this formula: Resistance=Voltage/Current Having gaining the results I will write them up in a table from which I will plot the graph to support my results Then after drawing the graphs I will come to my conclusion, in my conclusion I will conclude what happened in the experiment and I will say whether my prediction is right. I will then come on to the evaluation of my experiment. Prediction My prediction is as the Length of the wire increase by 10cm the resistance will get affected making it to increase. The factors which may affect my experiment are firstly the cell(Battery) which may ran out or cause a defect, The voltmeter or ammeter may show the wrong Voltage or current and there also could be a wrong connection being made connecting the circuits. There also could be a user fault and they may measure the wrong length of wire. The factors which need to be controlled are to firstly to get a good working battery and them some healthy working wires. You need to make sure u connect the circuit correctly and also you need to make sure you measure the correct length each time. I will also keep the same temperature to make sure the experiment is even I will do this by using a thermometer to make sure the temperature is constant. I will be using Room temperature. Work Done By- SaNjE Balendra Table of results (Thin Wire) Length Voltage Current Resistance Here are is the table of results for my first experiment in which I used a thin wire Work Done By- SaNjE Balendra Table of results (1st Thick Wire) Length Voltage Current Resistance  Here is the table of results for my second experiment in which I used a thick wire Table of results (2nd Thicker Wire) Length Voltage Current Resistance Here is the table of results for third and final experiment Work Done By- SaNjE Balendra Conclusion Having done my experiment I have come to my conclusion. In my experiment I have found out that as the length of the wire increases the resistance increases. This is because as the length of the wire increases it causes the current and voltage to increase which means the resistance increases as well resistance is equal to voltage divided by current. The resistance increases because there is more sufficient surface area which means the can atoms to collide, when the thickness increases it causes the resistance to decrease as there is a lot of surface area so there will be less collision. Evaluation The experiment proved to be a success and it went very well although it could be improved by trying other lengths, different voltages but also a different type of wire to be able to compare the resistance difference this would make a more interesting experiment. I feel overall my results were quite precise. You can see my results were accurate looking at all 3 of my graphs, which shows a straight line through most of the points apart from one or two which are on the line or not very apart from the line. The 2 points on the (thin wire) which was not close to the line was a Anomaly but it did not effect the gradient in the graph. In my experiment the places I think I made the most errors in the experiment was measuring the length of the wire as it was hard to measure the wire keeping it straight and then holding a meter wire to measure it. I can improve on how to measure the wire by using more than one person to either help me or do the experiment with me, I can also improve by being sensible and being focused on my work and on what am doing.