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Free research essays on topics related to: invented

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  • Lead Acid Battery Potassium Hydroxide
    787 words
    There are many kinds of batteries which consist of different materials in order to produce an electric charge. Here are some of the most common batteries, what they consist of and how they work. Bichromate Cell (see picture # 1) A battery is a device which converts chemical energy into electrical energy. A battery usually consists of two or more cells connected in series or parallel, you can also have a single cell battery. All cells consist of a positive electrode, and a negative electrode. An ...
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  • Part Of Town Point Of View
    1,456 words
    ... more privileged ones have more advantages in normal life, e. g. more money - Lower colours have to show their respect and inferiority by bowing to higher colours A police force, called the G 4, is also invented. It is their duty to check if the rules are kept and to insure that everybody is keeping a journal. The students who have played this game in previous years are spies, who also control and if necessary, report any students who jeopardise the success of the game. There is also a sex re...
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  • The Physics Of Scuba Diving Swimming With Fish
    1,089 words
    Have you ever wondered what it would be like to swim with the fish and explore the underwater jungle that covers two-thirds of the earth's surface? I have always been interested in water activities; swimming, diving and skiing, and I felt that scuba was for me. My first dive took place while on a family vacation. I came across a dive shop offering introductory dives, which immediately caught my interest. After much convincing (my parents), with my solemn assurance that I would be careful, I was ...
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  • Pickwick Papers Mass Production
    611 words
    Books Books are the truest form of media. Each and every production, from a television show to above to a radio broadcast, all started as a script... words on paper. Even in this era of rapidly advancing technology, a time when the latest thing can be rendered obsolete before it reaches your home, we have still created nothing that can replace the book. Despite the seeming immortality of the form of book we now know, though, it has undergone several important transformations since the inception ...
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  • Father Didn T
    1,009 words
    Charles Goodyear was born in New Haven, Connecticut on December 29, 1800 to Amasa and Cynthia Goodyear. Charles? s father was a hardware manufacture and a merchant. Amasa Goodyear built mainly farming tools like hayforks and scythes, which he invented. When Charles was a teenager he wanted to go into the ministry and become a pastor, but his father convinced him that he was a good business man and placed him in the hardware store of the Rogers brothers in Philadelphia at the age of seventeen. He...
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  • Hunter Gatherers Human Race
    618 words
    Cities: Good or Bad The invention and rise of the city was both the best and the worst the human race has ever done. There are two opinions on the subject and I believe both are valid. In one corner people say that cities ruined man s already perfect way of life. They believe cities led to many flaws we have in society today and that humans would be better off without them. On the other hand, some people believe that cities are the best thing that could have happened to our planet. They say that...
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  • State Of Nature Locke Believes
    739 words
    In the Second Treatise of Government by John Locke, he writes about the right to private property. In the chapter which is titled? Of Property? he tells how the right to private property originated, the role it plays in the state of nature, the limitations that are set on the rights of private property, the role the invention of money played in property rights and the role property rights play after the establishment of government... In this chapter Locke makes significant points about private p...
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  • University Of Michigan Jonas Salk
    2,446 words
    Jonas Salk From the beginning of mankind, man has looked for cures of illness. Jonas Salk found a cure for one of the worst illnesses in the history of man, polio. Jonas Salk's polio vaccine was a great discovery of his time, and it is still being used today to eradicate polio worldwide. Dr. Salk is also known for other medical discoveries. He was a quiet man who lived a rough childhood. He was not looking for fame, instead, it found him. During the time before the vaccine, many people, mostly p...
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  • Cultural Evolution Biological Evolution
    997 words
    Cultural evolution began to occur during the most recent Ice Age, or within the last hundred or fifty thousand years. This is when the tools thats are used for sophisticated hunting are found; for example the spear thrower, the fully barbed harpoon, and the flint master tools that were used to make all the hunting tools. Cultural evolution took shape because man had the flexibility of mind to recognize inventions and to turn them into community property. The Ice Ages forced man to depend less on...
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  • John W Mauchley High Speed Electronic
    999 words
    There have been few inventions that has grown an attached itself to as many lives as the invention of the computer. Computers can be found in almost every aspect of our lives, if not direct, indirectly. When I think of the different ways I come in contact with computers in one day its astounding. When I wake in the morning its usually by the assistance of an alarm clock that I program to alarm at a specific time. When I use my Metro Card to gain entrance to the train, a computer reads the funds ...
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  • Transcontinental Railroad Native Americans
    1,206 words
    Double Edge Sword After the civil war, we had thousands upon thousands of people looking for the American Dream, and Horace Greeley, who stated the famous words Go west young man, helped to start the great migration westward. There was plenty of cheap land west of the Mississippi, and gold was for in the West, just waiting for those who could get there. The migration ultimately interfered with the Native Americans, which changed their way of life forever. Many poor souls tried to make it in the ...
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  • Trial And Error Vacuum Tube
    878 words
    Thomas Edison? 4 th place Thomas Alva Edison was the most famous and prolific inventor of all time. During his life, over 1100 patents were issued to him or his associates; he was known as the wizard of Menlo Park, the town in New Jersey where he set up his first invention factory. Yet he was not really a scientist, having no theory or mathematics, and most of his success came from perfecting the ideas of others or already existing inventions by trial and error. He learned telegraphy on the rail...
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  • Works Of Art Escher
    324 words
    Maurits Cornelius Escher was born on June 17 th, 1898 in Leeuwarden, Netherlands. His father was a civil engineer. Escher? s great skill for art and drawing was realized at an early age. This led his father to decide to send him to study at the School of Architecture and Decorative Arts in Haarlem. But, when he was 21 years old, Escher gave up architecture to study in the field of graphic arts. Escher spent most of his life travelling in Europe looking for inspiration for his works. In 1921 he g...
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  • University Of Pennsylvania Ezra Pound
    1,422 words
    This American poet and critic, wrote this letter to twentieth century poets from Rapallo, Italy, on May 12, 1939: Arriving at the University of Pennsylvania in 1901, I acknowledge debts to Professors McDaniel and Child for Latin and English, and to Ames for doing his best when no professor of American history had got down to bedrock. Overholser had not made his admirable compendium of the real causes of the Revolution and of the great and dastardly betrayal of the American people and the America...
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  • Man Kind Reading Books
    866 words
    Fahrenheit 451: Books A Part of Our Past One of the biggest issues raised in this book was the idea that people are starting to forget more about books and what they mean. People have started to take books for granted, instead of reading books they watch a movie or a program on the television. People do not realize that books, scrolls, manuscripts are a big part of our past. Since the beginning of time, people have been recording things they saw, did and took part in on birch bark and later very...
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  • 18 Th Century Industrial Revolution
    811 words
    The Industrial Revolution In the last part of the 18 th century, a new revolution gripped an unready world. This revolution was not a political one, however it would lead to many implications later in its existence. Nor was this revolution a social or cultural one. This revolution was an economic one in which there was a transformation from the traditional hand made tools and items to machine driven, mass produced goods. The Industrial Revolution, as it is called by historians, changed the ways ...
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  • Negro Dialect Helen Vendler
    1,844 words
    Robert Lowell (1964) [Lowells review was important for Berryman: it appeared in the New York Review of Books and at the height of Lowells own achievement For the Union Dead had just been published. Lowell was at times baffled, irritated and dismayed by the poems, and when he offered support, it was remarkably tentative... His descriptions would set the tone for other reviewers. When eulogizing Berryman in 1972, Lowell blurted out: " 77 Dream Songs are harder than most hard modern poetry, th...
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  • Period Of Time Planet
    1,353 words
    THE RENAISSANCE The Renaissance (from the French word meaning rebirth or regeneration) is the period of time after the Middle Ages. The dates of the beginning and end of the Renaissance vary, but most see it as occuring between the 14 th and 16 th centuries. During the Middle Ages, wars were frequent. The Church leaders and kings dictated the lives of all, and were often prejudiced and merciless in their decisions. In the 14 th century, in Italy, things start to change. A movement of humanists, ...
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  • Significant Events E Mail
    866 words
    The Internet is perhaps todays most influential technological advance. Significant events in history contributing to the development of the Internet can be traced back to as early as 1858. As the Internet expands in the future, it stands to gain control over much of the world. The earliest event in history leading to the development of the Internet took place in 1858. This was the laying of the Atlantic Cable. It was laid to provide instantaneous communication across the ocean. Although it was s...
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  • Machine Gun Gatling Gun
    1,698 words
    The title of the book we read was The Social History of the Machine Gun. This publication basically outlined the progression of machine guns, starting with the 14 th century s organ gun and ending around 1940. This advancement through technological eras showed man s relationship with this technology and how well we dealt with the responsibility of the awesome power of the automatic weapon. First mention in 1339. No metals that could with stand the pressures of regular mass or sustain fire. Techn...
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