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The Atomic Force Microscope, 2005.
This paper describe the atomic force microscope (AFM) and its functions.
2,200 words (approx. 8.8 pages), 10 sources, MLA, AU$ 99.95
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Abstract
This paper explains that there are several different types of atomic force microscopes, which are used at very close ranges and without a lens, that operate by measuring a local property, whether height, optical absorption or magnetism, by using a probe placed very close to the sample. The author points out that AFMs constitute a subset within the larger group known as scanning-probe microscopes, which can utilize many different types of tips. The paper relates that the accuracy of the AFM depends on the state of the tip and a worn tip can produce blurred images resulting in the recent development of an automatic tip evaluation system showing when the tip needs to be replaced.
From the Paper
"Kevin Kjoller considers how to measure the true resolving power of an atomic force microscope, noting first that resolution means the same as it does for an optical microscope, meaning the minimum distance between two adjacent objects that a microscope can identify as separate. Kjoller complains that most manufacturers substitute some meaningless term for resolution and ignore the reality. Several issues need to be considered, such as the size of the probe and three types of limiting noise, electrical, mechanical, and acoustic. Kjoller defines electrical noise as "the sum of the thermal and operating noise from all components inside the AFM electronics, including any noise due to cross-talk and less-than-optimal grouping.""
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1956 Noble Prize Winners in Physics, 2005.
This paper discusses the work of the 1956 Nobel prize winners in physics: William Bradford Shockley, John Bardeen and Walter Houser Brattain.
2,140 words (approx. 8.6 pages), 8 sources, APA, AU$ 96.95
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Abstract
This paper explains that William Bradford Shockley, John Bardeen and Walter Houser Brattain were given the 1956 Nobel prize winners in physics for their research on semiconductors and their discovery of the transistor effect, which started the development of presnet-day communications. The author points out that William Shockley's speech at the giving of the Nobel Prize stressed that some important segments of United States industry, such as Bell Laboratories from where two of the three Nobel Laureates came, believed in the theory that research of a fundamental character is important from a practical aspect. The paper describes the process of research that led to these discoveries.
From the Paper
"In his own life, he had been asked many times whether the experiment that he had planned was pure or applied research. At the same time, for the research scientist it was probably more important to know whether the particular piece of research will provide some more useful and lasting knowledge about nature. According to his opinion, if any such knowledge was possible, then the particular research should be classified as fundamental research and it did not matter whether the reasons for undertaking the research was purely personal motivation or with any other view."
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Fiber Optics, 2006.
This paper examines the science of fiber optics while also discussing its impact in the field of telecommunications.
1,226 words (approx. 4.9 pages), 6 sources, MLA, AU$ 60.95
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Abstract
This paper traces the roots of fiber optic technology back to the 19th century when a British physicist first discovered the phenomenon of total internal reflection of light. The writer of this paper clearly details the makeup of fiber optics, which are thin strands of purified glass that transfer information in the form of light. This paper examines the various uses for fiber optics, as well as the advancements made to this particular technology which are constantly evolving. This paper also analyzes the manner in which fiber optic technology has revolutionized the field of telecommunications.
Table of Contents:
Introduction
History of Fiber Optics
Design
Fiber Optics (Advantages and Disadvantages)
Advancement of Fiber Optic Technology
Conclusion
Bibliography
From the Paper
"Optical fibers are nothing but thin strands of highly purified glass that transmit data in the form of light. These individual glass strands have a diameter of around 120 micrometers and are bundled together as optical cables that can transmit data upto 50 Km without the need for repeaters. Each optic fiber can be divided into three distinct layers namely the innermost layer or the core, the cladding layer that immediately covers the core and the outermost buffer coating made of plastic that is designed to protect the fiber from weather and other external damages. While the core is the glass medium on which light travels the cladding layer is used to reflect the escaping light back into the core and thus minimize the optical signal loss. The lower refractive index of the cladding material facilitates reflection of light back into the core region. Thus by using total internal reflection, optical fibers can carry data in the form of light pulses over large distances with little loss."
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Relationship Between Science and Philosophy, 2006.
A thorough research study into the relationship between science and philosophy.
3,881 words (approx. 15.5 pages), 8 sources, MLA, AU$ 153.95
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Abstract
The relationship between science and philosophy is predicated on the concept that the dichotomy between the two disciplines were artificially created in order to achieve various desirable ends. It is further contended that this dichotomy now no longer serves mankind and is being replaced by a 'discipline' that not only brings science and philosophy into a relationship, but virtually unifies them. In order to support this assertion, an extensive literature review is conducted in the paper, tracing both the separation and reunification of science and philosophy. In addition, new material is sought from current thinkers in both nominal fields, science and philosophy. In the field of philosophy, additional new material is sought from contemporary metaphysicians. The information is developed as a qualitative study, with emphasis on drawing the parallels between pre-Greek concepts of science and philosophy and today's drive toward recombining the two.
Paper Outline:
Abstract
Introduction and Statement of the Problem
Review of the Literature and Research Questions
Methodology
The Relationship Between Science and Philosophy: Return to Unity
The Path Toward a Relationship
Toward the Modern World
References
From the Paper
"For Aristotle, a good man would have the virtues, which were developed by the intellect and thus were 'science', well in hand before he went looking for the 'theoretical virtues'; Aristotle believed he could not have those, could not seek those, unless he first had the 'good life' in place; science, then, in this world, is subordinate to philosophy as far as being symbolic of humankind's advancement. On the other hand, one might claim that science is of greater import simply because, without it, mankind could not "pursue freely the highest things" (Schall, 1998, p. 7)."
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Mathematician Daniel Bernoulli, 2005.
This paper discusses the life and achievements of mathematician Daniel Bernoulli.
1,995 words (approx. 8.0 pages), 6 sources, MLA, AU$ 91.95
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Abstract
This paper explains that Daniel Bernoulli used his analytical skills across a broad range of scientific disciplines including probability, hydrodynamics, the flow of blood and blood pressure and Riccati's differential equations. The author points out that Daniel Bernoulli improved mathematical physics with his recognition of many of Newton's theories and his utilization of the more powerful calculus of Leibniz. The paper relates that Bernoulli's mathematical explanation of the behavior of gas led to Boyle's law.
Table of Contents
Introduction
Bernoulli's Contributions to Mathematics
Effect of Bernoulli's Work on Today's World
From the Paper
"Aerodynamics is a subdivision of fluid mechanics that deals with the motion of air and other gaseous fluids, and with the forces acting on bodies in motion relative to such fluids. Some of the examples of aerodynamic actions are: the movement of an aircraft through the air, the wind forces applied on a structure and the working of a windmill. Daniel Bernoulli's principle is the main law dictating the motion of fluids, which links an increase in flow velocity to a decrease in pressure. For instance, for the same quantity of air at the entry to the venturi tube below to flow through the restriction in the middle, the air must accelerate."
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"The Universe in a Nutshell", 2006.
A discussion on Stephen W. Hawking's work, "The Universe in a Nutshell" about physical principles.
953 words (approx. 3.8 pages), 1 source, MLA, AU$ 48.95
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Abstract
This paper discusses how Hawking succeeds in introducing the average layperson to the physical principles of the material universe. It offers examples from the book to further qualify and express this point.
From the Paper
"Hawking also tries to make his theories funny and relevant to every day life today, as well as introduce speculations of what will happen to the universe, long after his text's first readership has passed into eternity. Hawking even mentions the effect of airline food on human life expectancy, a sobering thing to reflect upon for one who engages in as much air travel as Hawking! But there are also more serious, vital references to how understanding physics can impact human life on earth in the relative short term as well as in space and far into the future. Hawking describes how statistical evidence points to the physical limits of population growth and electricity being reached on earth by the year 2600. But by applying the same statistical principles to knowledge as to population growth, to take a more comforting view of things, predicted human knowledge of how to preserve energy reserves could potentially carry the human race forward, faster to possibly attain solutions to this problem of geometric physical expansion."
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The Chaos Theory, 2005.
This paper discusses the possibility of more accurately forecasting weather through the application of Edward Lorenz' chaos theory as based on James Gleick's book "Chaos: Making a New Science".
2,315 words (approx. 9.3 pages), 4 sources, MLA, AU$ 103.95
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Abstract
This paper explains that James Gleick in his book "Chaos: Making a New Science" reports the work of meteorologist and pioneer of the chaos theory, Edward Lorenz, to computerize the forecasting of weather based on physical laws. The author points out that Gleick explains, even though the straight-forward mathematical attempt by Lorenz to find weather averages was a "failure", Lorenz discovered that the phenomenon of climate instability was related to the chaos theory. The paper relates that Lorenz' two non-linear discoveries are (1) that models of chaotic systems have an exquisitely sensitive dependence on initial dependence called the butterfly effect and (2) that even simple systems can show complex, chaotic behavior proving that the "clockwork" universe doesn't exist.
Table of Contents
Gleick's Belief of the Possibility to Forecast Weather
The Butterfly Effect
Nonlinear and Linear Systems
Similar to Predicting the Motions of Planets
Link between Aperiodic Behavior and Unpredictable Behavior
Thermal Convection
From the Paper
"The very act of predicting weather is "fragile" when it comes to computer modeling, even though the data may be "reasonable trustworthy" and the laws of science are "purely physical" (20). But the computer modeling of weather patterns and air movement and temperatures and all the other ingredients that go into the stew, are only good for a day or two; "beyond two or three days the world's best forecasts" are / were speculative, and "beyond six or seven," Gleick writes, "they were worthless." Why were they worthless? "The Butterfly Effect was the reason.""
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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, AU$ 77.95
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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, AU$ 51.95
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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, AU$ 71.95
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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, AU$ 88.95
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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, AU$ 91.95
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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, AU$ 54.95
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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, AU$ 57.95
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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, AU$ 81.95
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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, AU$ 60.95
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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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