Nichrome wire by determining its resistivity Essay Example

Nichrome wire by determining its resistivity Paper Metals have low resistance due to their delocalized field of electrons. However, different metals have different values of resistance. In this experiment, the students were given a spool of Nichrome wire to determine its diameter. Nichrome, as the name suggests, is an alloy of Nickel, Chromium and Iron.  The resistance of a conductor depends on its inherent resistivity (Ï ), length (l) and its cross-sectional area (A). The resistance is given by the following formula (#1): . Where, R = Resistance (à ¢Ã‚ ¦)  Ã  = Resistivity (à ¢Ã‚ ¦.m)  l = length (m) and,  A = cross-sectional area of the conductor.  To determine the cross-sectional area of the wire, the diameter was first determined using a micrometer screw gauge. The formula (#2) that relates the diameter to the cross sectional area of the wire is:  The electrical resistance can be determined by an ohmmeterlength, using a ruler, and the resistivity was determined by the literature value of 1.25Ãâ€"10-6 à ¢Ã‚ ¦.m.[1] Substituting the literature value for Nichrome’s resistivity () and formula #2 into formula #1, the following equation can be obtained: This equation can graphically represented by l on the y-axis and R on the x-axis. The gradient would then give the value for which could then be manipulated to extract the value of d. A simple circuit was set up with the Nichrome wire as the resistor. For different sets of data, the length of the Nichrome wire was altered by making only a fraction of the full wire part of the circuit. A ruler was used to measure the length of the wire part that was part of the circuit and an ohmmeter was used to identify the resistance of the circuit. Five trials were taken for five different lengths to obtain a reliable, wide range of data. We will write a custom essay sample on Nichrome wire by determining its resistivity specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Nichrome wire by determining its resistivity specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Nichrome wire by determining its resistivity specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Safety Precautions:  1. Precaution was taken so that the Nichrome wire would not hurt the finger.  2. Precaution was taken to make sure there were no fire hazards due to short-circuit.  3. Precaution was taken to make sure that no injury was caused because of electrocution due to careless behavior.  RAW DATA COLLECTION:  The resistance of the circuit for different lengths were collected as raw data and are tabulated below:  Therefore, using the ‘resistivity’ method, the diameter of the Nichrome wire is identified to be 0.053  ± 0.001cm. CONCLUSION AND EVALUATION: As it can be seen from the total uncertainty calculation, the experimentally deduced value of the diameter of the Nichrome wire was accurate to a large extent. In fact, the literature value provided by the manufacturer†¦ The difference†¦Ã‚  The r2 value for the line of best is 0.9956 which shows excellent linear correlation between the resistance and the length of a conductor, confirming the equation However, the minor noticeable distance between the average slope and the minimum and maximum slopes is due to the increasing uncertainty in the measurement of the length. The uncertainty, however small, cannot be ignored and they must be explored so that if possible, they can be avoided in the future. Firstly, the recording of the length of the Nichrome wire was no so accurate because of the uncertainty in the ruler and its inability to measure all the lengths at one go. A longer ruler or a measuring tape could be used to avoid these kind of easily avoidable errors. Another problem was that the wire was often crooked at some places and straightening it could have caused it to crack so they were not completely straightened. In fact, the wires were looped around several bobs and the distance between the bobs were measured to give an accurate estimate of the length of the wire. Another issue that arose due to the usage of the bobs was that it was difficult to measure the length of the wire that was used to complete the loop around the bob. A possible workaround both these problems can be to use a thread to run along the Nichrome wire and then measure the thread to determine the length of the Nichrome wire used. Another limitation to the procedure of the experiment is the assumption of the electrical resistivity of the Nichrome wire. The actual range is 1.00 to 1.50 (Ãâ€"10-6 à ¢Ã‚ ¦.m) but the median, 1.25 was assumed. There is no possible way to tell the exact electrical resistivity without knowing the exact composition of the wire and this is because resistivity is a property that is specific to the composition of the conductor and slight changes in the composition can produce significant changes in the value for the resistivity of the conductor. Depending on the manufacturer’s label for the diameter is accurate but often these values are rounded off to suit the gauge number of the wire. For example, if a 2AWG wire requires a 10mm diameter, most manufacturers will label even a 9.8mm to be 10mm because of their own economic benefits. Therefore, the most accurate way would be use a micrometer screw gauge to measure the diameter of the wire at different locations and then match the experimental value obtained from this experiment against the average of the micrometer readings. This way, dependence on secondary data is minimized and a higher level of confidence can be displayed in the readings.

6 New Year’s “Ressaylutions” for 2011 from The Essay Expert

6 New Year’s â€Å"Ressaylutions† for 2011 from The Essay Expert The Essay Experts Top 10 Grammar and Spelling Errors of 2010 was such a hit I’ve decided to continue on the New Year’s theme.   What are The Essay Expert’s New Year’s Resolutions (Ressaylutions?)   They range from improvements to my communications with you, my readers, to new ventures in my creative life. 6 New Year’s Ressaylutions for The Essay Expert:   1.  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Convert my website to WordPress. From everything I read, WordPress is the way to go for ease of use and search engine optimization (SEO).   I found a company in India that is working on this project for me as I type.   I’m excited to make my own website changes instead of always depending on a designer. 2.  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Make it easier for my readers to choose the topic they want to read about. This means having 4 separate e-lists:   a) Job Search (Resumes Cover Letters); b) College Admissions; c) LinkedIn Professional Writing; and d) Everything; e) Current Blog Newsletter only.   Within the next 3 months I plan to give subscribers a chance to choose their topic(s) so they won’t get emails about issues that may not interest them. 3.  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Create autoresponders. This project is related to ressaylution #2.   Once someone signs up for a particular list, he or she will receive a weekly email with relevant information.   Some of that information will be my older articles on the subscriber’s chosen topic.   This way new subscribers won’t miss out on the great articles I wrote in the past! 4.  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Guest blog. I wrote for other people’s blogs quite a bit when I first started my business, and it has been a while since that has happened.   I look forward to creating alliances with some other bloggers and exchanging our wisdom! 5.  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Start an Artist’s Way group. I will be stirring up more creative energy in my life and in the world by leading an Artist’s Way group.   Whether this group will be virtual/remote or in-person or both has not been determined.   The Artist’s Way is a 12-week program that unblocks creativity through writing daily â€Å"morning pages,† going on weekly â€Å"artist’s dates,† and doing other prescribed exercises.   I’ve already started morning pages (2 days down, a lifetime to go!) and took my inner artist on a chilly walk tonight.   If you’re interested in participating in a group, please contact me at BrendaB@TheEssayExpert.com or 608-467-0067. 6.  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Continue to write and share about writing issues, job search issues, and sometimes life issues that strike my fancy each week and that my readers care about.   Expect some short articles from time to time that simply share an example of a writing issue I’ve seen that week.   I believe real life examples are the best way to teach since they represent the challenges many of you are dealing with every day (that’s not â€Å"everyday†)! What are some of your resolutions for 2011?   And/or what would you like to see from The Essay Expert in the coming year?   I look forward to your comments. Category:UncategorizedBy Brenda BernsteinJanuary 2, 2011 2 Comments Diane Kern says: January 15, 2011 at 3:54 pm I love your resolutions. I want to switch my wordpress.com over to wordpress.org. for the added options it has. Guest blogging is also on my list. I am feeding my inner artist with SoulCollage and sharing it with others by holding workshops. Diane Log in to Reply The Essay Expert says: January 15, 2011 at 8:51 pm Thats awesome Diane! Im so happy to know you are living your creative life! Log in to Reply

Timeline of Rockets - Leaving Earth Behind

Timeline of Rockets - Leaving Earth Behind 3000 BCE Babylonian astrologer-astronomers begin making methodical observations of the skies. 2000 BCE Babylonians develop a zodiac. 1300 BCE Chinese use of firework rockets becomes widespread. 1000 BCE Babylonians record sun/moon/planetary movements - Egyptians use sun clock. 600-400 BCE Pythagoras of Samos sets up a school. Parmenides of Elea, a student, proposes a spherical Earth made from condensed air and divided into five zones. He also sets forth ideas for stars being made of compressed fire and a finite, motionless, and spherical universe with illusory motion. 585 BCE Thales of Miletus, a Greek astronomer of the Ionian school, predicts the angular diameter of the sun. He also effectively predicts a solar eclipse, frightening Media and Lydia into negotiating for peace with the Greeks. 388-315 BCE Heraclides of Pontus explains the daily rotation of the stars by assuming that the Earth spins on its axis. He also discovers that Mercury and Venus revolve around the Sun instead of the Earth. 360 BCE Flying Pigeon (device that uses thrust) of Archytas made. 310-230 BCE Aristarchus of Samos proposes that the Earth revolves around the Sun. 276-196 BCE Eratosthenes, a Greek astronomer, measures the circumference of the Earth. He also finds the differences between planets and stars and prepares a star catalog. 250 BCE Herons aeolipile, which used steam power, was made. 150 BCE Hipparchus of Nicaea tries to measure the size of the sun and the moon. He also works on a theory to explain planetary motion and composes a star catalog with 850 entries. 46-120 AD - Plutarch sets forth in his De facie in orbe lunae (On the Face of the Moons Disk) 70 AD, that the moon is a small Earth inhabited by intelligent beings. He also puts forth theories that lunar markings are due to defects in our eyes, reflections from the Earth, or deep ravines filled with water or dark air. 127-141 AD Ptolomy publishes Almagest (aka Megiste Syntaxis-Great Collection), which states that the Earth is a central globe, with the universe revolving around it. 150 AD Lucian of Samosatas True History is published, the first science fiction story about Moon voyages. He also later does Icaromenippus, another moon-voyage story. 800 AD Baghdad becomes the astronomical study center of the world. 1010 AD The Persian poet Firdaus publishes a 60,000-verse epic poem, Sh_h-N_ma, about cosmic travel. 1232 AD Rockets ( arrows of flying fire) used at the siege of Kai-fung-fu. 1271 AD Robert Anglicus attempts to document surface and weather conditions on planets. 1380 AD T. Przypkowski studies rocketry. 1395-1405 AD Konrad Kyeser von Eichstdt produces Bellifortis, describing many military rockets. 1405 AD - Von Eichstdt writes about sky-rockets. 1420 AD - Fontana designs various rockets. 1543 AD - Nicolaus Copernicus publishes De revolutionibus orbium coelestium (On the Revolutions of the Celestial Orbs), reviving Aristarchus heliocentric theory. 1546-1601 AD - Tycho Brahe measures positions of stars and planets. Supports heliocentric theory. 1564-1642 AD - Galileo Galilei first uses the telescope to observe the skies. Discovers sunspots, four major satellites on Jupiter (1610), and Venus phases. Defends Copernican theory in Dialogo sopra i due massimi sistemi del mondo (Dialogue of the Two Chief Systems of the World), 1632. 1571-1630 AD - Johannes Kepler derives the three great laws of planetary motion: planetary orbits are ellipses with the sun as one focus of the directly related to its distance from the Sun. Findings were published in Astronomia nova (New Astronomy), 1609, and De harmonice mundi (On the Harmony of the World), 1619. 1591 AD - Von Schmidlap writes a book about non-military rockets. Proposes rockets stabilized by sticks and rockets mounted on rockets for extra power. 1608 AD - Telescopes invented. 1628 AD - Mao Yuan-I makes the Wu Pei Chih, describing gunpowder and rocket manufacture and use. 1634 AD - Posthumous publication of Keplers Somnium (Dream), a science fiction entry defending heliocentrism. 1638 AD - Posthumous publication of Francis Goodwins The Man in the Moon: or a Discourse of Voyage Thither. It puts forth the theory that the attraction from the Earth is greater than that from the moon Publication of John Wilkins Discovery of a New World a discourse about life on other planets. 1642-1727 AD - Isaac Newton  synthesizes recent astronomical discoveries through universal gravitation in his famed, Philosophiae naturalis principia mathematica (Mathematical Principles of Natural Philosophy), 1687. 1649, 1652 AD - Cyranos reference to fire-crackers in his novels, Voyage dans la Lune (Voyage to the Moon) and Histoire des États etc Empires du Soleil (History of the States and Empires of the Sun). Both refer to the newest scientific theories. 1668 AD - Rocket experiments near Berlin by the German colonel, Christoph von Geissler. 1672 AD - Cassini, an Italian astronomer, predicts the distance between Earth and Sun to be 86,000,000 miles. 1686 AD - Bernard de Fontenelles popular astronomy book, Entretiens sur la Pluralità © des Mondes (Discourses on the Plurality of Worlds) published. Contained speculations about the habitability of the planets. 1690 AD - Gabriel Daniels Voiage du Monde de Descartes (Voyage to the World of Descartes) discusses the souls separation from the body in order to go to the Globe of the Moon. 1698 AD - Christian Huygens, renowned scientist, writes Cosmotheoros, or Conjectures Concerning the Planetary Worlds, a non-fictional premise on life on other planets. 1703 AD - David Russens Iter Lunare: or Voyage to the Moon uses the idea of catapulting to the moon. 1705 AD - Daniel Defoes The Consolidator tells of an ancient races mastery of Lunar flight and describes various spaceships and legends of lunar flights. 1752 AD - Voltaires Micromà ©gas describes a race of people on the star Sirius. 1758 AD - Emanuel Swedenborg writes Earths in our Solar System, which takes Christian Huygens non-fictional approach to discussing life on other planets. 1775 AD - Louis Folie writes Le Philosophe Sans Prà ©tention, about a Mercurian who observes Earthlings. 1781 AD - March 13:  William Herschel  makes his own  telescope  and discovers Uranus. He also puts forth theories of a habitable sun and life on other planetary bodies. Hyder Ali of India uses rockets against the British (were composed of heavy metal tubes guided by bamboo and had a range of a mile). 1783 AD - First  manned balloon  flight made. 1792-1799 AD - Further use of military rockets against the British in India. 1799-1825 AD - Pierre Simon, Marquis de Laplace, produces a five-volume work to describe the Newtonian system of the world, entitled Celestial Mechanics. 1800 - British Admiral  Sir William Congreve  began working with rockets for military purposes in England. He had originally adapted the idea from Indian rockets. 1801 AD - Rocket experiments carried out by the scientist,  Congreve. Astronomers discover that the large gap between Mars and Jupiter contains a large asteroid belt. The largest, Ceres, was found to have a diameter of 480 miles. 1806 - Claude Ruggiere launched small animals in rockets equipped with parachutes, in France. 1806 AD - First major rocket bombardment done (on Boulogne, using Congreve rockets). 1807 AD - William Congreve  used his rockets in the  Napoleonic Wars, as the British attacked Copenhagen and Denmark. 1812 AD - British rocket fire on Blasdenburg. Results in the taking of Washington D.C. and the White House. 1813 AD - British Rocket Corps formed. Begin by taking action in Leipzig. 1814 AD - August 9: British rocket fire on Fort McHenry prompts Francis Scott Key to write the rockets red glare line in his famous poem. During the War of Independence, the British used the  Congreve rockets  to attack  Fort McHenry  in Baltimore. 1817 - In St. Petersburg, Russian Zasyadko rockets were fired. 1825 AD - Dutch forces bomb the Celebes tribe in the East Indies  William Hale  develops the stickless rocket. 1826 AD - Congreve performs further rocket experiments using stage rockets (rockets mounted on rockets) as set out by Von Schmidlap. 1827 AD - George Tucker, under the pseudonym Joseph Atterlay, represents a new wave in science fiction, through describing a spaceship in A Voyage to the Moon with some Account of the Manners and Customs, Science and Philosophy of the People of Morosofia and other Lunarians. 1828 - Russian Zasyadko rockets were put to use in the Russo Turkish War. 1835 AD - Edgar Allen Poe describes a lunar voyage in a balloon in Lunar Discoveries, Extraordinary Aerial Voyage by Baron Hans Pfaall. August 25: Richard Adams Locke publishes his Moon Hoax. He publishes a week-long serial in the New York Sun, as if written by Sir John Herschel, discoverer of Uranus, about moon creatures. This was under the title, Great Astronomical Discoveries Lately Made By Sir John Herschel. 1837 AD - Wilhelm Beer and Johann von Mdler publish a map of the moon using the telescope at Beers observatory. 1841 - C. Golightly was granted the first  patent  in England for a rocket-airplane. 1846 AD - Urbain Leverrier discovers Neptune. 1865 Jules Verne published his novel, entitled From the Earth to the Moon. 1883 Tsiolkovskys Free Space was published by Tsiolkovsky who describes a rocket that functioned in a vacuum under Newtons Action-Reaction laws of motion. 1895 Tsiolkovsky published a book on space exploration which was entitled Dreams of the Earth and the Sky. 1901 H.G. Wells published his book, The First Man in the Moon, in which a substance with anti-gravity properties launched men to the moon. 1903 Tsiolkovsky produced a work entitled Exploring Space with Devices. Within, he discussed the applications of liquid propellants. 1909 Robert Goddard, in his study of fuels, determined that liquid hydrogen and liquid oxygen would serve as an efficient source of propulsion, when properly combusted. 1911 Russian Gorochof published plans for a reaction airplane which operated on crude oil and compressed air for fuel. 1914 Robert Goddard  was granted two U.S. patents for rockets using solid fuel, liquid fuel, multiple propellant charges, and multi-stage designs. 1918 November 6-7, Goddard fired several rocket devices for representatives of the U.S. Signal Corps, Air Corps, Army ordinance and other assorted guests, at the Aberdeen proving grounds. 1919 Robert Goddard  wrote, and then submitted A Method of Attaining Extreme Altitudes, to the Smithsonian Institution for publication. 1923 Herman Oberth published The Rocket into Interplanetary Space in Germany creating discussion on the technology of rocket propulsion. 1924 Tsiolkovsky conceived the idea of multi-stage rockets, and discussed them for the first time in Cosmic Rocket Trains. A Central Committee for the Study of Rocket Propulsion was established in the Soviet Union, in April. 1925 The Attainability of Celestial Bodies, by Walter Hohmann, described the principles involved in interplanetary flight. 1926 March 16:  Robert Goddard  tested the worlds first successful  liquid-fueled rocket, in Auburn, Massachusetts. It attained a height of 41 feet in 2.5 seconds, and it came to rest 184 feet from the launch pad. 1927 Enthusiasts in Germany formed the Society for Space Travel. Hermann Oberth was among the first several members to join. Die Rakete, a rocket publication, began in Germany. 1928 The first of nine volumes of an encyclopedia on interplanetary travel was published by Russian Professor Nikolai Rynin. In April, the first manned, rocket-powered, automobile was tested by Fritz von Opel, Max Valier and others, in Berlin, Germany. In June, the first manned flight in a rocket-powered glider was achieved. Friedrich Stamer was the pilot, and flew about one mile. Launch was achieved by an elastic launch rope and a 44 pound thrust rocket, then a second rocket fired while airborne. Hermann Oberth began acting as consultant to Film Director Fritz Langs Girl in the Moon and built a rocket for premiere publicity. The rocket exploded on the launch pad. 1929 Hermann Oberth published his second book about space travel, and one chapter included the idea of an electric space ship. On July 17, Robert Goddard launched a small 11 ft. rocket which carried a small camera, barometer and thermometer which were recovered after the flight. In August, many small  solid-propellant  rockets were attached to Junkers-33 seaplane, and were used to achieve the first recorded jet-assisted airplane take-off. 1930 In April, The American Rocket Society was founded in New York City by David Lasser, G. Edward Pendray, and ten others for the purpose of promoting interest in space travel. December 17th marked the establishment of a rocket program Kummersdorf. It was also decided that the Kummersdorf proving grounds would be equipped to develop military missiles. On December 30th,  Robert Goddard  fired an 11 foot  liquid fueled rocket, to a height of 2000 feet at a speed of 500 miles per hour. The launch took place near Roswell New Mexico. 1931 In Austria, Friedrich Schmiedl fired the worlds first mail carrying  rocket. David Lassers book, The Conquest of Space, was published in the United States. May 14: VfR successfully launched a  liquid-fueled rocket  to a height of 60 meters. 1932 Von Braun  and his colleagues demonstrated a  liquid fueled  rocket to the German Army. It crashed before the parachute opened, but  Von Braun  was soon employed to develop liquid fueled rockets for the Army. On April 19th, the first  Goddard  rocket with gyroscopically controlled vanes was fired. The vanes gave it automatically stabilized flight. In November, at Stockton N.J., the American Interplanetary Society tested a rocket design that they had adapted from the German Society for Space Travels designs. 1933 The Soviets launched a new rocket fueled by  solid  and  liquid  fuels, which reached a height of 400 meters. The launch took place near Moscow. At Stanten Island, New York, the American Interplanetary Society launched its No. 2 rocket, and watched it attain 250 feet in altitude in 2 seconds. 1934 In December,  Von Braun  and his associates launched 2 A-2 rockets, both to heights of 1.5 miles. 1935 The Russians fired a  liquid, powered rocket that achieved a height of over eight miles. In March, a rocket of Robert Goddards exceeded the speed of sound. In May,  Goddard  launched one of his gyro-controlled rockets to a height of 7500 feet, in New Mexico. 1936 Scientists from the California Institute of Technology began rocket testing near Pasadena, CA. This marked the beginning of the Jet Propulsion Laboratory. The Smithsonian Institution printed  Robert Goddards  famous report,   Liquid  Propellant Rocket Development, in March. 1937 Von Braun  and his team relocated to a special, purpose-built rocket testing facility at Peenemunde on the Baltic Coast of Germany. Russia established rocket test centers in Leningrad, Moscow and Kazan. Goddard watched one of his rockets fly to higher than 9,000 feet, on March 27. This was the highest altitude attained by any of the  Goddard Rockets. 1938 Goddard  began to develop high speed fuel pumps, in order to better outfit  liquid fueled  rockets. 1939 German scientists fired, and recovered, A-5 rockets with gyroscopic controls that attained seven miles altitude and eleven miles range. 1940 The Royal Air Force used rockets against the Luftwaffe planes in the Battle of Britain. 1941 In July, the first U.S. based launch of a rocket assisted airplane took place. Lt. Homer A. Boushey piloted the craft. The U.S. Navy began developing Mousetrap, which was a ship-based 7.2 inch mortar-fired bomb. 1942 The U.S. Air Force launched its first air-to-air and air-to-surface rockets. After a failed attempt in June, Germans managed to successfully launch an  A-4  (V2) rocket, in October. It traveled 120 miles downrange from the launch pad. 1944 January 1st marked the beginning of long-range rocket development, by the California Institute of Technology. This testing resulted in the Private-A and Corporal rockets. In September, the first fully operational  V2 rocket  was launched against London, from Germany. Over a thousand V2s followed. Between the 1st and 16th of December, twenty four Private-A rockets were test fired at Camp Irwin, CA. 1945 Germany successfully launched the A-9, a winged prototype of the first Intercontinental Ballistic Missile, which was designed to reach North America. It reached almost 50 miles in altitude, and achieved a speed of 2,700 mph. The launch was executed on January 24th. In February, the Secretary of War approved the Armys plans to establish the White Sands Proving Grounds, for testing new rockets. On April 1st through 13th, seventeen rounds of Private-F rockets were fired at Hueco Ranch, Texas. On May 5th, Peenemunde was captured by the Red army, but the facilities there were mostly destroyed by the personnel. Von Braun  was captured by the U.S. and relocated to the White Sands proving ground in New Mexico. He was made part of Operation Paperclip. May 8th marked the end of the war in Europe. At the time of the German collapse, more than 20,000 V-1s and V-2s had been fired. Components of approximately 100 V-2 rockets arrived at the White Sands Testing Grounds, in August. On August 10,  Robert Goddard  died due to cancer. He died at the University of Maryland Hospital in Baltimore. In October, the U.S. Army established its first Guided Missile Battalion, with the Army Guard Forces. The Secretary Of War approved plans to bring top German rocket engineers to the U.S., in order to further knowledge and technology. Fifty five German scientists arrived at Fort Bliss and White Sands Proving Grounds, in December. 1946 In January, the U.S. outer space research program was started with captured  V-2 rockets. A V-2 panel of representatives of interested agencies was formed, and more than 60 rockets were fired before the supply was finally exhausted. On March 15, the first American built V-2 rocket was static-fired at the White Sands Proving Grounds. The first American-built rocket to leave the earths atmosphere (the WAC) was launched on March 22nd. It was launched from White Sands, and attained 50 miles of altitude. The U.S. Army began a program to develop two stage rockets. This resulted in the WAC Corporal as the 2nd stage of a  V-2. On October 24th, a V-2 with a motion picture camera was launched. It recorded images from 65 miles above the earth, covering 40,000 square miles. On December 17th, the first night-flight of a V-2 occurred. It achieved a record making 116 miles of altitude, and velocity of 3600 mph. German rocket engineers arrived in Russia to begin work with Soviet rocket research groups. Sergei Korolev built rockets using technology from the  V-2. 1947 The Russians began launch tests of their  V-2 rockets, at Kapustin Yar. Telemetry was successfully used for the first time in a V-2, launched from White Sands. On February 20th, the first of a series of rockets was launched for the purpose of testing ejection canister effectivity. On May 29, a modified V-2 landed 1.5 miles south of Juarez, Mexico, narrowly missing a large ammunition dump. The first V-2 to be launched from a ship was launched from the deck of the U.S.S. Midway, on September 6th. 1948 On May 13th, the first two-stage rocket launched in the Western Hemisphere was launched from the White Sands facility. It was a  V-2  which had been converted to include a WAC-Corporal upper stage. It reached a total altitude of 79 miles. White Sands launched the first in a series of rockets that contained live animals, on June 11. The launches were named Albert, after the monkey that rode in the first rocket. Albert died of suffocation in the rocket. Several monkeys and mice were killed in the experiments. On June 26, two rockets, a  V-2  and an Aerobee were launched from White Sands. The V-2 attained 60.3 miles, while the Aerobee attained 70 miles altitude. 1949 A number 5 two-stage rocket was launched to 244 miles of altitude, and 5,510 mph velocity over White Sands. It set a new record for the time-being, on February 24. On May 11,  President Truman  signed a bill for a 5,000 mile test range to extend from Cape Kennedy Florida. The Secretary of the Army approved the relocation of the White Sands scientists and their equipment to Huntsville, Alabama. 1950 On July 24th, the first rocket launch from Cape Kennedy was a number 8 of the two-stage rockets. It climbed to a total of 25 miles in altitude. A number 7 two-stage rocket was launched from Cape Kennedy. It set the record for the fastest moving man-made object, by traveling Mach 9. 1951 The Jet Propulsion Laboratory of California launched the first of a series of 3,544 Loki rockets, on June 22. The program ended 4 years later, after having fired the most rounds in ten years at White Sands. On August 7, a Navy Viking 7 rocket set the new altitude record for single stage rockets by reaching 136 miles and a speed of 4,100 mph. The launch of the 26th V-2, on October 29, concluded the use of the German rockets in upper atmosphere testing. 1952 On July 22, the first production-line Nike rocket made a successful flight. 1953 A missile was fired from an underground launch facility in White Sands on June 5. The facility was constructed by the Army Corps of Engineers. The first launch of the Armys Redstone missile, on August 20th, was conducted at Cape Kennedy by Redstone Arsenal Personnel. 1954 On August 17th, the first firing of a Lacrosse Group A  missile  was conducted at the White Sands facility. 1955 The White House announced, on July 29th, that President Eisenhower approved plans to launch unmanned satellites to circle the earth, as participation in the  International Geophysical Year. The Russians soon made similar announcements. On November 1st, the first guided missile equipped cruiser was placed in commission at the Philadelphia Naval Yard. On November 8th, the Secretary of Defense approved the  Jupiter  and Thor Intermediate Range Ballistic Missile (IRBM) programs. President Eisenhower placed highest priority on Intercontinental Ballistic Missile (ICBM) and the Thor and Jupiter IRBM programs on December 1st.

Discovering Art, Design and Cultural Movement Essay

Discovering Art, Design and Cultural Movement - Essay Example Through intensified interaction especially with the advanced telecommunication, technologies in the contemporary society the world became a global village in which people freely share cultural values. The manifestation of a culture is in its art, arts represent the society as the people observe their actions and relations and capture such in such works of arts as music, paintings and sculptures among others. Cultural movement on the other hand refers to the distinctive change in the way in which the different disciplines in the society approached their work. With time, the human societies developed thus adopted newer mindsets. With every progressive development, the cultures of the societies changed thus compelling great changes in the manner in which the people approached their works and formulated their relations. Among the great tenets of the cultural movements were arts. Throughout the history of humans, art has often exhibited great intellectual prowess among the people. In such different times, leading artists used distinct technologies to influence the development of the art thus portraying the society more evidently to their diverse audiences. The development of art and its manifestation in the representation of the society was always a representation of the developments in the society. ... The period was marked with great religious influence of the early Christian society. The church wanted to use art as a means to increase its spread and influence. To achieve such, the Roman Catholic employed the great minds in arts such as Michelangelo and used their minds to influence the consumption of products of arts by the common public. During this definitive period, arts targeted the common public and the artists provided as much information about their work as possible. Unlike in the renaissance period in which artists such as Leonardo concealed their messages in artistic sophistication, the baroque period was characterized with detail and provision of as much information about the artifact as possible. Michelangelo as the epitome of arts at the time sought to gain more relevance with the masses. His choice of models was specific, as urbanization had just began in the early Roman society. He used street models such as prostitutes who posed for him in his paintings. One of his greatest paintings for the Roman Catholic was the death of Marry, which just as most of his works he uses the locals as models and employs the commonly available features of the population to influence the population’s understanding of the church and its teachings. In the painting, Marry, Jesus’ mother is a depiction of a local prostitute in the street who models to him. The woman is dressed in normal clothes used by the poor who lived in the neighborhood and targeted by the church in their campaign in an attempt to regain the confidence and sympathy of the people. The tactic worked as the church received more sympathy from the populace. While the Roman Catholic achieved their primary

Competition in Design School Case Study Example | Topics and Well Written Essays - 750 words

Competition in Design School - Case Study Example Some feel competition helps each person to hone their creative skills. For students who study in design schools, the nurturing of individual creativity is important because they must continually innovate. When competition is involved, students take risks they might not otherwise take to create something unique enough to be noteworthy. It means students summon their most creative talent. Many students like Elizabeth Young, a former student of the University of California, argue that students learn more about their natural talent in competitive environment. It is considered as the "whetstone of talent." Competition also helps the students to work as teams and learn to create success together. However, talented advisers such as Michelle Fabio believe that even though competition undeniably helps elevate the standard by which we measure performance, too much competition could negatively impact less capable students. Therefore, even if some believe that competition is the best way to hone creative skills, it is not without its disadvantages. One disadvantage of competition is that it may cause students to lose sight of their main objective. Educator Mary Pat Lynch shares that in excessive competition, winning becomes the focus, instead of learning. This has been supported by interviews regarding competition conducted by Bergins and Cooks in which forty-one academically talented students conveyed that they focused on grade point average as opposed to learning for the sake of knowledge. No mention was made about any desire for competence by augmenting their knowledge and skills. This means that in a competitive environment, students' center of attention has shifted to the grade, rather than on the main goal of education which is to make students actually understand the ideas being imparted. Among designers, this will cause many to focus on finishing only those ideas that will probably help them win while hardly attempting to bring artistic life to their creations. As such, students compromise quality of life if they think they always need to perform better than others instead of letting natural talent flow. Competition also affects the general welfare of a person and the society in several undesirable ways. First, competition, by nature, requires only a single or a very small number of people to win while the rest of the competitors will lose. If a person ends up losing most of the time, it could undermine their own self-confidence, foster feelings of weakness and finally lead to depression. In fact, nearly ten percent of adolescents in the U.S. suffer from depression. Since the height of depression and low self-esteem in young people often coincide with times characterized by an increase in academic stress, the overly competitive environment increases the probability of poor quality of life for many students. Unfortunately depression is parcel of a cycle that negatively impacts many people. Depressed people are likely to feel left out and become social outcasts because no one will gladly relate themselves with people who see themselves as losers. As they lose their self-esteem, they st op trying to improve themselves. For this reason, they never realize their true talent and rarely contribute anything meaningful to society. Competition can bring out the

Lady Macduff as a Foil for Lady Macbeth Essay -- essays research pape

Lady Macduff as a Foil for Lady Macbeth In many of Shakespeare’s plays, there is a major character, and a lesser character whose character traits directly contrast those of the major character. This literary device is called a foil. One example of this exists in the play Romeo and Juliet, in which Mercutrio foils Romeo’s character with his disdain for love and belief in man making his own destiny. Another example of foil exists in William Shakespeare’s play Macbeth. The character of Lady Macduff foils Lady Macbeth in her lack ambition, her genuine love of family life and her devotion to her husband. Although one only gets a brief glimpse at the life that Lady Macduff and her husband share, it is quite easy to assume just how different they are from the Macbeths. One example is simply fr...

Somplaint letter Essay

Dear Ms Brennan, I am writing this letter of complaint about a very serious matter and it is not only affecting me but my whole class. I wanted to discuss a matter that has troubled me and my classmates for around 2- 3 months now, as I have seen there has been no progress in the situation I thought it would be better if you could see it from a student’s point of view. I have learnt that many of my other classmates have also come to you with our situation. I also know that you may well know who and what I am talking about, I am writing to you about our maths teacher Mrs Sanderson and how she teaches us. On many occasions Mrs Sanderson has showed us a video of someone drawing constructions etc and then very vaguely saying or pretty much repeating what the person has said and sat down and said â€Å"I will give you a worksheet about this and do it†. On another occasion she has asked a student to come up and practically teach a lesson for her and make the student explain everything. The student is Arin Tofi she is a very smart girl but I am also sure that she herself wants to sit down, learn and do her work too. Many students have suggested for you to come and supervise in our lessons but as you may know people’s personalities change when they are around other people, I am not suggesting that Mrs Sanderson is like this, but I am saying in general people change around their acquaintances, colleagues and bosses etc. I have also realised that our school never really has stable teachers in maths as they are always employing new teachers all the time. I do know that Mrs Sanderson is either replacing Mrs Abrahams permanently or substituting for her I do not know. At the beginning of this Mrs Sanderson said to us at the beginning of the lesson that for the rest of the week she would not teach us properly and all we would do is sit and do worksheets this did not affect as that is what she mostly gives us to do anyway. What she also said was that she would not teach us because of our behaviour although we are not quite disciplined in her classes that is not our fault it is most likely hers. I am not questioning any way of teaching or in any way telling you how she should  teach but if she can’t control us then that is her lack of putting a certain amount of discipline on us. We have had another teacher (which of whom I do not remember her name) for once a fortnight and if you ask her she will tell you that in her classes we don’t lose concentration and all our work is up to date and I remember what she teaches us more than I do in Mr Sanderson’s for the last few months. We have also had supply teachers were we concentrate more and do our work. I also think that when she came to say this to us at the beginning of the week, she had brought it up because of my classmates also complaining but I think that this goes against the right of freedom of speech as we should have a right to complain, talk and say anything I like without an outcome of me losing my maths lessons for a whole week just because I wanted to speak my mind. As I know teachers have always encouraged us to speak up and say if anything is wrong and this is my way of doing it. We are in year 9 now and should not have a teacher where we do not learn properly or do work. We are coming up to assessment week where we do mocks and our SAT’s we cannot carry on like this as it is an important year and is a very vital moment in our journeys to getting our GCSE’s and getting the grades we want and absolutely need. I am sorry if I may have come across rude or inconsiderate in this letter in any way but as I said before this is my way of expressing how I feel towards this situation. Yours sincerely, Sanjida Chowdhury Yr 9 HAL Set 1