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Free research essays on topics related to: metal

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  • Sodium Chloride Earth Crust
    745 words
    Sodium has an atomic number of 11 and a mass of about 23 g. It is a silvery white-metallic element classified under the alkali metals. Sodium has been known since early times and was used by the people of Mesopotamia and Egypt to make glasses. Sodium is the sixth most common element found on the earth. It is usually not found in nature but more often in compounds such as salt (NaCl). Sodium conducts heat and electricity easily. Without this element life could not exist. Each compound is used for...
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  • Radio Telescopes Radio Waves
    1,285 words
    ... copes Orbiting telescopes are used to observe the ultraviolet (UV), far infrared, and X-ray portions of the electromagnetic spectrum. The Infrared Astronomical Satellite, placed in orbit in 1983, carried a 22. 5 -inch infrared telescope. Because all matter emits infrared radiation if warm, technologists had to cool the telescope to near absolute zero with liquid helium so its internal heat radiation would not mask radiation it was collecting from deep space objects. Among its many discoverie...
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  • Back To Earth Space Ship
    1,207 words
    One day I went to the computer shop and I bought a new computer game. The box in which was the computer game was, looked very nice and I couldnt resist to buy it. Next day my parents were leaving to France and I was alone Ok not exactly alone, the baby-sitter that looked after me when I was little came to our house to look after me for 1 week. She was young and she wasnt a really baby-sitter because she cared more about her hair and nails than about me. Later when it was dark she went out with h...
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  • Infamous Day Killed 13 School
    403 words
    The most tragic school shooting in American history took place on April 20, 1999. On this infamous day in history two Columbine high school students killed 13 and wounded 21 before they took there own lives. It is not clear why they chose this day, but it may be because this was the 110 th anniversary of Adolf Hitlers birthday. What happened on this day was a tragedy that affected not only Columbine, but the whole country as well. At 11: 10 a. m. both shooters pulled into parking spaces belongin...
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  • Ability To Withstand Engineering Material Titanium
    639 words
    Titanium was discovered in 1791 in the mineral menachanite by the British clergyman William Gregor, who named the new element malachite. Four years later, the German chemist Martin Heinrich Klaproth rediscovered the element in the mineral rutile and named it titanium in allusion to the strength of the mythological Greek Titans. The metal was isolated in 1910. The element is present in meteorites and the sun. It is used in many things that enhance everyday life such as fashion apparel, medical eq...
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  • Valence Electrons Solar Cells
    1,438 words
    Introduction Our world has been in existence for billions of years and throughout all those years we have used the sun for basic energy needs. So why not be able to harness that energy and use it to power things like our homes or our cars? Many scientist have been developing alternate forms of energy called Green Energy. Green power is the solution to creating a cleaner, sustainable energy system. Renewable energy -- power from the sun, wind, plants, and moving water -- is a natural way to meet ...
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  • N Type Silicon Crystal Of Silicon Resist
    638 words
    Inside every modern computer or other data-processing wonder is a microprocessor bearing millions of transistors sculpted from silicon y chemicals and light. Silicon, the second most abundant element on Earth, is used extensively in transistors, integrated circuits, photoelectric devices, and other electronic devices. A pure crystal of silicon does not conduct electricity unless traces of other substances are diffused or doped onto it. Therefore silicon must be manufactured in a specific way in ...
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  • 000 Short Tons Ways To Detect Copper
    699 words
    Blake Adams Period 3 Grade 8 2 / 5 / 97 Copper is a mineral. it is not a plant or a animal. Copper is a metallic metal. It can never be broken down into different substances by normal chemical means. Copper was one of the first metals known to humans. People liked it because in it's native condition, it could easily be beaten into weapons or tools. Copper has been one of the most useful metals for over 5000 years. Copper was probably used around 8000 B. C by people living along the Tigris and Eu...
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  • Carbon Dioxide Greenhouse Effect
    687 words
    How Can We Protect Environment Nowadays protection of the environment is very crucial, as the world is moving into a new era without considering any of the major problems of pollution with rapid industrialization. The best way to protect the environment is conservation. Conservation is the philosophy and policy of managing the environment to assure adequate supplies of natural resources for future as well as present generations. The primary conservation concern here is with fossil fuels. Solutio...
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  • Taste Of Victory Senses Sight Feel
    741 words
    My 20 Interests and Analysis Among all hobbies and activities there are several things I like most of all. Probably, one can say that Im quite active person and I like going in for sports. I like playing football, basketball, hockey and volleyball. I like playing these games because I adore command kinds of sport. In these games you feel responsibility for the people you are playing together. They rely on you and you have to use all your five senses: sight, hearing, touch, scent, and taste. When...
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  • Kurt Cobain Gave Birth
    1,437 words
    Pop Music and Me: Music of the 1990 's Grunge was the popular style of our juvenile age. We got used to it when we were teenagers. Grunge shaped our culture, our world outlook and our viewpoints. The phenomenon of grunge is worth our attention to observe. We listened to Nirvana and Pearl Jam. We idolized Kurt Cobain and his songs. We loved grunge when we were teenagers and we dont shift our ground until now. Grunge is interesting by the fact that it didnt bring anything completely innovative int...
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  • Full Metal Jacket Stanley Kubrick
    1,680 words
    The Vietnam War, was not even a war, it was a Police Action. The young men who fought for their country had other views of what it was. This war showed how power hungry the U. S. was to influence the world. I thought the Vietnam War was a serious misallocation of troops, money, resources and time. The Vietnam War was a perfect platform for the U. S. to show the world how belligerent we were to stop the spread of communism. Some observers in the United States questioned the administrations policy...
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  • Yin Yang Digestive Tract
    1,570 words
    Traditional Chinese Medicine Chinese Medicine Traditional medicine of China has a long historical and cultural background dating back about 2500 years. The ancient Chinese people were able to reach a level of social stability that included the ability to treat disease of emotional, physical, and spiritual origins. Although a belief in spirits as the cause of disease has remained in China even to the present day, the view that the body obeyed a natural order struck a chord in the intellectual eli...
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  • Roman Catholic Church Middle Ages
    1,104 words
    In the year 1305 the Roman Catholic Church was relocated from Rome to France. With this the power of the papal states was divided among the regions leading families. Starting near the year 1300 the demand for reform began to grow at a rapid pace. By the 1600 s close to half of the practicing Catholics in western Europe had left the Church to join one of the new reformer religious groups. This reform brought about new ways of thought and new attitudes towards religion and the human race. The youn...
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  • Henri Becquerel Marie Curie
    1,241 words
    Henri Henri Becquerel Henri Becquerel Henri Becquerel, a French physicist, was born in Paris on December 15, 1852. His grandfather, Antoine-Cesar Becquerel, had fought at the battle of Waterloo in 1815 and later earned a considerable reputation as a physicist. He made important contributions to the study of electrochemistry, meteorology, and agriculture. Henri father, Alexander-Edmond Becquerel, also made a name for himself in science. His research-included studies on photography, heat, and the ...
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  • Left Hand Long Time
    1,105 words
    Instruments of the Orchestra Strings: The viola is an important member of the orchestra, but is not often heard by itself. Because it is bigger than the violin, with longer strings, it makes a rich, warm sound that is lower in pitch. In contrast to the viola the violin is the smallest member of the string family. Because its strings are the shortest, it produces the highest sound. The viola is a little heavier, and its shape is slightly different, too. But it is still played on the violist? s le...
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  • Four Months Customs House
    645 words
    JAMES A. GARFIELD James A. Garfield was born in Cuyahoga County, Ohio, in 1831. His father died in 1833, when Garfield was only two years old and so his mother had to carry on working the family farm by herself. With the death of his father, the family feel into poverty. Even though they had very little money, his mother made sure that her children went to the neighborhood school to get a good education. He belonged to the Disciples of Christ Church. While growing up, James drove canal boat team...
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  • Steam Engine James Watt
    1,257 words
    James Watt was born 19 th January 1736 at Greenock and at this time no one would have even imagined his effect on the Industrial Revolution that was to occur within that century. When James was fifteen he had read books about and become accustomed to Philosophy (similar to modern physics). He had also completed many of his own chemical experiments and even started produce and construct his own products such as a small electronic device that startled his companions. He soon became interested in a...
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  • English And Swahili Kenya Economy Country
    1,371 words
    A Study of Kenya As one of the many different developing countries in Eastern Africa, Kenya is unique in its own way. With its mangrove swamps, thick forests, crystal lakes, towering mountains, and vast deserts; this is all wrapped up in a country the size of Texas. It attracts millions of visitors in seek for an African Safari which is much appreciated by the government as a source of foreign capitol for this poor region. We will take a look at the history which shaped this country into what it...
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  • Plant Cells Genetic Material
    329 words
    Methods for Genetically Engineering a Plant Two very different techniques exist for giving a plant new genetic characteristics. But both share several steps. Step 1: The DNA that encodes the genetic information for the desirable trait must be isolated. At step 2, the different techniques diverge into an a path and a b path: In Step 2 a, the new DNA is linked to a circular ring of genetic material called a transfer plasmid. Plasmids act like molecular taxicabs that carry genes from one place to a...
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