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The Anatomy and Function of Vision, 2006.
This informative paper analyzes the human sensory system while also focusing on the primary perception function of vision.
1,653 words (approx. 6.6 pages), 3 sources, MLA, $ 53.95
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Abstract
This clearly written paper presents an understanding into the basic physiology of the eye and how it responds to light which in effect begins the visual process. The writer of this paper delves into the anatomy of the eye as well as the brain's association to the concept of light. The writer contends and explains why the human eye is basically a fully functioning, self contained camera with a never ending supply of power. The eye functions mainly by permitting light to pass through the cornea which acts in the same manner as a camera's aperture. The writer delves into the field of evolution by contending that sight and vision are a crucial aspect in mankind's evolutionary progress. This paper also contains three illustrative graphics relevant to this particular topic.
Table of Contents:
Introduction
Light and the Sun
Human Eye Anatomy
Vision Function
Conclusion
References
From the Paper
"Our planet is as it is because of the main function of the sun. The sun is the center and most likely the most critical part of our solar system because of the light it offers to feed our planet and drive all life. There is little doubt from a scientific perspective that our planet would be greatly altered without the sun and most likely would have no life. For living creatures to evolve, expand and thrive, they have had to learn to function on the ideas or concepts of sensing light in some way.
This notion applies to all living creature on our planet and therefore could be considered to be an almost universal law. Consider that all plants utilize light through the concept of photosynthesis to feed themselves and mammals and other life forms utilize light to hunt, mate and preserve themselves through the cycles of light that are present."
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Lightning and the Electrostatic Phenomena, 2006.
This paper details the scientific premise behind lightning and electricity.
1,002 words (approx. 4.0 pages), 5 sources, MLA, $ 35.95
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Abstract
This paper examines the positive and negative nature of electricity, which was first identified by Benjamin Franklin. This paper details the basics of lightning, which is a natural occurrence, generated through the two interactive processes of tribo-electricity and electrostatic induction. This paper delves into how thunder clouds are formed by ice and water. This paper also contains an illustration, detailing the origins of lightning, as well as a table listing the dielectric constants of various insulators, relevant to this particular topic.
From the Paper
"In a thunder cloud, the two dissimilar materials are ice and liquid water. Most thunderclouds' bottoms are at about 5km above Earth's surface, where it is usually sufficiently cold to freeze any liquid water. Powerful winds circulate up and down the interior of a thunderstorm, bearing up small drops of freezing water which collide with descending hail stones. Even though these two objects are made from water, the fact that one is large and solidly frozen while one is small and only partially frozen means that they occupy different positions on the tribolectric scale. The hail stones tend to become negatively charged and the smaller particles positively so. The negative charge accumulates at the base of the thunderstorm, and the positive at its top. In essence, thunderstorms act like immense Van de Graaff generators."
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Chaos Theory, 2005.
This paper discusses chaos theory based on James Gleick's "Chaos: Making a New Science" and Ian Stewart's "Does God Play Dice?: The Mathematics of Chaos".
1,500 words (approx. 6.0 pages), 2 sources, MLA, $ 49.95
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Abstract
This paper explains that James Gleick believes that chaos theory is revolution in thinking, a major shift from the ordered universe of Newton and even the less mechanical universe of Einstein. The author points out that chaos theory says that the universe is decided on the basis of chance to a great degree and that the aggregate of those chances cannot be predicted or even discerned to allow a clear cause-and-effect assessment. The paper relates that chaos theory says that a small change in a system, which takes place all the time and cannot be tracked or even relied upon, can produce more and more changes until something much greater and unforeseen occurs.
From the Paper
"Ian Stewart is trained as a mathematician, while Gleick writes about science for the New York Times. Stewart is British, and Gleick American. They write about the same subject from different points of view. Stewart begins his book noting that the direction for creation has been first from chaos into order, and that physics has now found that order is something of an illusion masking the continuing chaos of reality. He also cites Newton and the Newtonian era as affirming that nature has laws and man can discover what these laws are. The world described by Newton was a clockwork world which operated like a machine, and Stewart discusses the nature of that world and world-view much more directly than does Gleick."
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Stephen William Hawking, 2005.
Examines the life history and writings of this famous physicist and mathematician.
1,945 words (approx. 7.8 pages), 4 sources, MLA, $ 61.95
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Abstract
In the world of science and history there are few great names that can match the name of Stephen William Hawking. Hawking is perhaps one of the best known physicist and mathematicians in history, or at least in modern times. This paper presents a close examination of the life and works of Stephen William Hawking. The writer explores his childhood to help determine how he became what he is today. The writer then examines his adult life, his works and his contributions to the world, as well as some of his more better-known theories and ideas.
From the Paper
"Another difference between Hawking and many other scientists throughout the world is that he understands the world's need for laymen terms. Many scientists are reported to be so scientific and mathematically based that their works and words are boring and over the head of everyone but other scientists. Hawking understands the average person is not going to take time to dissect scientific jargon and he put together a book that explains many of the most mind boggling ideas in history in terms that can be understood by the non scientist."
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Black Holes, 2005.
This paper describes the basic types of black holes and their detection.
2,010 words (approx. 8.0 pages), 13 sources, MLA, $ 63.95
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Abstract
This paper explains that in the universe, few elements are weirder than black holes, a celestial body made of material so dense that nothing can easily escape its gravitational field, not even light. The author points out, that for decades, theorists considered them mere mathematical constructs, unavoidable consequences of Albert Einstein's theories of relativity; but there is no reason that they cannot exist in nature and, over the last four decades, evidence has mounted that suggests they actually do exist. The paper relates that, although black holes are totally invisible and there is no way to see them directly, they can be detected indirectly (1) by observing the radiation from the bright-burning accretion disks, which radiate on all electromagnetic frequencies especially on the X-ray bands, and (2) by observing their gravitational effects on other objects.
Table of Contents
Introduction
Black Hole Anatomy 101
Surfing the Singularity
From the Paper
"Another important feature possessed by many black holes is an accretion disk, a torus around the event horizon formed by infalling matter as it spirals toward the singularity. Because of the energetic nature of the infall-think of the whirlpool formed as water drains from a bathtub-accretion disks usually emit all sorts of radiation, including visible light. The only other features black holes are reliably theorized to possess are angular momentum (rotation) and occasionally the odd electric charge or magnetic polarity, a consequence of eating too many charged particles"
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Nuclear Waste Storage, 2006.
A look at the pros and cons of a proposal to store nuclear waste in Nevada.
1,066 words (approx. 4.3 pages), 4 sources, MLA, $ 37.95
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Abstract
This paper takes a look at a proposal to store nuclear waste in Yucca Mountain in Nevada. It examines the supposed advantages of such a proposal as well as its disadvantages and points out that, while the residents of Nevada may benefit economically from an arrangement with the federal government to bury nuclear waste in their state, the benefits would be negligible, especially in comparison to the potential health risks that such a proposal poses.
From the Paper
"The power of nuclear reactions was demonstrated in the most conclusive and drastic way possible in 1945, when the United States dropped atomic bombs on both Hiroshima and Nagasaki, Japan. But nuclear reactions can be harnessed for peaceful, no-military uses, as well. Namely, nuclear power can be used as a source of energy. One side effect of energy generation by nuclear fission is that waste is produced and this waste is itself radioactive. The storage of the radioactive waste is, therefore, a problem, and one, in fact, with both scientific and political aspects. One state which has been repeatedly mentioned as a place within which radioactive waste could be stored is Nevada. Storing nuclear waste in Nevada has both positive and negative aspects for the state's population. Although Nevada would receive many benefits from storing nuclear waste, in actuality it poses many possible threats to the people living there."
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The Big Bang, 2006.
An explanation of the big bang theory - how our earth was formed.
1,144 words (approx. 4.6 pages), 7 sources, MLA, $ 39.95
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Abstract
The paper shows the scientific progression of the creation of earth from tiny particles through to the earth we know today. The paper explains that, once enough atoms gathered together, stars were formed. The writer explains that our earth was the result of the explosion of a star which was too small to sustain the thermo nuclear reactions, so it eventually cooled and became a solid mass. The paper describes two theories of how DNA was created. The writer concludes that the seeds of life, containing DNA, from which all living creatures on earth grew, came from outer space.
From the Paper
"How life originated is one of the most debated and most sought after question. Life as we know it requires water and, until one billion years ago, the earth was too hot to sustain liquid water, so we know that life on Earth must have formed within the last one billion years. There is evidence that shows that the oldest life we can detect occurred 500 million years ago. "We now understand that all life on Earth contains DNA, which is a long complex carbon-based strand consisting of billions of molecules. Every plant and animal on Earth has DNA. This DNA contains the instructions of how to grow and replicate itself, thereby creating more life. A single strand of DNA is unbelievably complicated, even in the smallest organisms. How is it possible that such a complicated thing was created in the short span of only one billion years? "According to the "Big Bang" theory, who maintain the belief that life on Earth was created in some primordial soup. Somehow a soup formed consisting of water, carbon and other elements and by chance eventually some of these elements came together in a form, which reproduced itself. The key feature of life it is that is able to create a duplicate of itself. The problem that scientists have faced with this theory is that they have never been able to replicate this primordial soup."
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Renewable Energy and Electricity, 2006.
A look at the options for renewable energy and electricity.
1,763 words (approx. 7.1 pages), 10 sources, MLA, $ 56.95
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Abstract
In this paper the author examines the sources available to create power and electricity. He looks at how technology is used to take advantage of the forces of nature available. The paper highlights how up until recently only the power created by falling water has been explored and used successfully in a number of applications. Sun, wind, waves, rivers, tides and the heat from radioactive decay in the earth's core are all looked at as being renew ables, in other words they give continuous sources. The paper concludes with a look at all of the environmental aspects of using these renewable sources, the arguments for and against each one including the aesthetic issues that arise. Introduction Solar Energy Wind Energy Rivers Geothermal Relating Renewable to Base-Load Electricity Demand Environmental Aspects
From the Paper
"The main role of solar energy in the future will be that of direct heating. Much of our energy need is for heat below 60oC - e.g. in hot water systems. A lot more, particularly in industry, is for heat in the range 60 - 110oC. [2] Together these may account for a significant proportion of primary energy use in industrialized nations. The first need is readily supplied by solar power much of the time in some places and the second application commercially is probably not far off."
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The Telescope, 2006.
An overview of the revolution of the telescope.
1,197 words (approx. 4.8 pages), 6 sources, MLA, $ 41.95
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Abstract
The paper describes the origins of the telescope. It includes a brief history of the magnifying glass and the first spectacles from which the beginnings of the first telescope evolved. The writer discusses Galileo's part in the development of the telescope and explains the changes from the Galilean model through to the reflecting telescope developed in the mid 1700s. In summation, the paper explains that the telescope has led to other important inventions such as the microscope.
From the Paper
"The cost of quality glass had come done enough by the end of the thirteenth century and the quality was reasonable enough that it was becoming a real possibility for people to be aided in their eyesight problems as they reached their middle years. It was discovered by spectacle makers that they were able to enhance vision for people by shaping and polishing glass in such a way that the words were enlarged. This is what is known today as the magnifying glass and had become common by the middle of the thirteenth century. From here came the invention of the spectacles and as the glass lenses were made smaller and it was learnt what could be done by altering shapes and polishing the glass in various ways the beginnings of the telescope evolved."
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Radar and How it Works, 2006.
A review of the history of radar's development and an explanation of how it works.
3,780 words (approx. 15.1 pages), 6 sources, MLA, $ 104.95
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Abstract
The paper begins by explaining basically what radar is and for what it's used. Then the paper recounts the history of radar's development, both theoretically and practically. From the history of radar the paper returns to the question of how it works, but analyzes the physics in depth, and breaks down the operation of each of a radar system's components. The paper finishes with a review of modern applications of different types of radar systems.
Table of Contents:
The History of Radar
Robert H. Rines - American Father of Radar
How Radar Works
The Radar Transmitter System
The Oscillator
The Modulator
The Transmitter
The Antenna
Types of Radar
Simple Pulse Radar
Continuous Wave Radar
Phased-Array Radar
Secondary Radar
Modern Radar
References
From the Paper
"Parallel developments occurred in a number of countries. The highest frequency at which then-current technology allowed substantial power to be generated was about 30MHz, the top end of the HF band. UK radar development proceeded rapidly from 1935 so that by 1937 the first operational (HF) radars of the Chain Home series were demonstrated. These frequencies were in place at the outbreak of World War II and played a decisive role in the air defence of Britain during the War. Wartime radar development quickly moved on to shorter wavelengths as devices were developed to allow generation and control of the power, but the Chain Home radars remained in service, as originally installed. The Chain Home radars, operating between 25 to 30MHz, on occasions indicated returns from extreme ranges, due to ionospheric reflection beyond the horizon. But they were intended as line-of-sight radars and long-range returns from the distant ground via an ionospheric reflection were generally only a source of confusion. During the War some attempts were made to use the ionospherically propagated signal for long range detections of convoys but no success was achieved (or could be expected) and tests were dropped."
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