| Papers [401-416] of 434 :: [Page 26 of 28] | | Go to page : <— 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 —> | |
|
|
The History of Rocketry, 1999.
The history of rocketry from concept to modern day space travel. Researches the rocket engine's international development and significance in the space program.
2,940 words (approx. 11.8 pages), 4 sources, AU$ 125.95
»
Click here to show/hide summary
Abstract
This research paper investigates the science of rocketry starting with the original concept, up to the present day space program. Developments in Germany, Russia, and the U.S. are detailed, along with the ways in which rockets have been used both on earth and in space. Most of the paper will deal with the development of the rocket engine up to its present day standards and its history in space flight.
From the paper:
"The notion of flying has fascinated people since the beginning of history, and most likely since the beginning of time. With the development of astronomy, man shifted that dream to another realm: outer space. Robert H. Goddard, a physicist of the early 1900?s, once told a story in his autobiography of how he was inspired to follow the dream of space flight. He recalls once when he was 17 years old; he was trimming branches in a cherry tree, and looked out at the sprawling country landscape. He imagined how fabulous it would be to soar upward into space, watching the earth receding below him. ?I was a different boy when I descended the ladder,? Goddard states, ?Life had now a purpose for me.?
| |
|
Lightning and Electricity, 2000.
This paper examines the scientific discoveries dealing with electricity.
1,700 words (approx. 6.8 pages), 9 sources, AU$ 80.95
»
Click here to show/hide summary
Abstract
This paper presents in chronological order the study of lightning and how as new ideas would come about and be proven, other inventors would use that idea and take it into a new direction.
From the Paper
"Lightning is a form of static electricity. When it is raining, raindrops can acquire extra electrons. These negatively charged raindrops seek out the positively charged ground. When these two charges connect, current flows through randomly placed areas of charged particles. This is what lightning is, and what gives it the jagged pattern (see diagram). Lightning has been on Earth longer than people have. Still we don?t know everything about it. We do know that lightning can take a variety of forms. The most common are forked, streak, ribbon, or bead lightning. All of these types are essentially the same with variations on atmospheric conditions. There is one type called ball lightning, but very little is known about this type. It is also known that lightning will travel from cloud to cloud, cloud to ground, and ground to cloud. Early studies done to find that lightning is electricity paved the way for several other important findings about electricity and how it behaves."
| |
|
Nuclear Energy: Failed Source of Energy, 2002.
This paper explains how the United States' nuclear power program failed.
2,770 words (approx. 11.1 pages), 5 sources, AU$ 119.95
»
Click here to show/hide summary
Abstract
This paper explains the reasons behind the halt in nuclear power plant construction in the United States. Factors in the decline of nuclear power plants include raising costs, disposal of nuclear waste, concern for safety, declining public opinion and governmental programs and decisions not favorable to the nuclear power industry. Footnotes.
From the Paper
"After a period of rapid growth in the nuclear power industry, resulting in over a hundred nuclear power plants being constructed in the United States alone, in the early 1970?s the industry began to slow and even began to decline in the 1980?s, while the rest of the world continued to increase their nuclear industry capacity. In the mid-1970?s the Atomic Energy Commission predicated that by the year 2000 there would be more than 1,000 nuclear power plants in the United States.[1] No new nuclear power plants have been ordered in the United States since 1973 and several plants have gone off-line since.[2] Between 1990 and 1995, 20 additional nuclear power plants came online outside of the United States, with an additional 36 under construction. Furthermore, Robert Newman, the President of ABB Combustion Engineering Nuclear Systems, in a October 6, 1996 New York Times article suggested that his company had been approached by the government of China with a plan to build as many as 150 nuclear power plants over the next 40 years.[3] Currently, there are over 437 nuclear power plants operating around the world.[4] Hence, while the rest of the world is increasing their dependence on nuclear power, the question becomes, why is the Untied States making a rapid reversal in its dependence on nuclear power? Several tangible factors have been suggested: the rising costs of construction of a nuclear power plant, the increase in time that it takes to construct a nuclear power plant, the disposal of low grade and high grade nuclear waste, public safety of living near a nuclear power plant, declining public support for nuclear power, and the fear of nuclear power plants contributing to the proliferation of nuclear weapons around the world."
| |
|
Mining the Past for Futuristic Ideas, 2001.
A discussion on the technological challenges in developing a hot air balloon.
1,005 words (approx. 4.0 pages), 1 source, AU$ 51.95
»
Click here to show/hide summary
Abstract
This paper reviews an article about overcoming technological difficulties in the field of hot-air ballooning. The solution hit upon by designers and had its roots in the world?s first air disaster ? a good idea poorly executed. The implication for the future is that we should look backwards as well as forward when solving difficult problems.
From the Paper
"People are flying around the world for the fun of it. They are described as sportsmen and adventurers, but at least in one way they have also been visionaries. Perhaps in other endeavors we should continue to look forward as well as back, and examine ideas that didn?t work and were perhaps discarded. There may be some excellent ideas that when reworked can move modern technology ahead. What we think of as a ?bad idea? may have some useful ideas within it. "
| |
|
Atomists, 2001.
This is a paper on the Atomists of the Greek era and their concept of Atoms and matter.
300 words (approx. 1.2 pages), 1 source, AU$ 25.95
»
Click here to show/hide summary
Abstract
This is a paper on the Atomists of the Greek era and their concept of Atoms and matter.
From the Paper
The notion that atoms make up matter was popular amongst the Greek civilization and through this notion comes the theory of the atomists. Democritus of Abdera (ca. 410 BCE) put forward the atomic hypothesis according to which matter can be divided until a point after which only the atoms remain.
| |
|
Effects of Weightlessness, 2001.
A scientific research of the gravity and weightlessness of humans in space.
1,020 words (approx. 4.1 pages), 1 source, AU$ 52.95
»
Click here to show/hide summary
Abstract
This is a paper that summarizes the observations of journalist, Glenn Zorpette, who accompanied engineering majors from the University of Alabama at Birmingham (UAB) who studied heat convection in artificial gravity by building a spinning assembly that produces centrifugal force in a test cell.
From the Paper
"The scientific research was conducted in the National Aeronautics and Space Administration's world-renowned Vomit Comet, a KC-135A aircraft that is flown so as to provide weightlessness in 25-second snippets. The plane is usually used for research conducted on a professional basis but undergraduate students are allowed to make use of the plane and conduct studies related to weightlessness. "
| |
|
Albert Einstein, 1999.
This paper is a brief biography on Einstein's achievements.
1,050 words (approx. 4.2 pages), 3 sources, AU$ 52.95
»
Click here to show/hide summary
Abstract
This paper explains how if it were not for Albert Einstein the world would be a lot different today as his discoveries and theories lead the way for physicists.
From the Paper
"When ever the phrase great mind or genius is mentioned usually one name comes to mind, and this name is Albert Einstein. This is so, because Einstein may very well have been the greatest mind of the twentieth century. Einstein revolutionized modern scientific thinking and was a master of physics and mathematics. From an early age Einstein showed skills and interests rare among others his age. From the beginning Einstein was destined for something special."
| |
|
The Mystery of Black Holes, 2002.
A detailed analysis of black holes: what they are and how they are formed.
1,725 words (approx. 6.9 pages), 3 sources, AU$ 80.95
»
Click here to show/hide summary
Abstract
This is an informative paper on what exactly a black hole is and what scientists have theorized about black holes. The paper examines the formation of black holes, past research on black holes and pondering questions still unanswered today.
From the Paper
"Ever since you were old enough to know what the sky, moon and stars were, you have always imagined what is actually up there? One of the most fascinating ideas of all is the mysterious and scary thought of a BLACK HOLE! This is perfectly normal because even today scientists are still pondering over that same question ? what is a black hole and does it exist? Theories that at one time seemed reasonable are now laughed at, our skies hold an infinite space which we will never be able to explore, as a result, our questions will be infinite as well."
| |
|
Black Holes, 2002.
This paper discusses in depth the reality of black holes.
1,770 words (approx. 7.1 pages), 6 sources, AU$ 83.95
»
Click here to show/hide summary
Abstract
This paper describes in depth test results and discoveries on black holes and whether or not they do exist. Special emphasis is placed on a discussion of Cygnus X-1.
From the Paper
"The only ways that we can detect black holes are to see the bending of light, or to examine the waves that they put off. The first thing discovered was a X-ray source in the constellation of Cygnus. This was then called Cygnus X-1 for its first X-ray source. No one knew for sure where this was coming from because X-ray telescopes cannot give that precise of a location. Later, in the spring of 1972 a new unexplained radio source was found in the same general area as Cygnus X-1. They identified this as an optical star known only by its classification number HDE226868. While we were finding this, the X-ray source for Cygnus X-1 showed up once again. They examined the data between these two objects, and made the conclusion that they were related. Most likely as a binary pair, with the star, and the unknown object, Cygnus X-1, orbiting around each other (DeGennaro). A binary pair is a pair of stars that orbit around each other, in this case one is a black hole, and the star orbits around it. As it orbits the immense gravity from the black hole strips gas from the normal star. As it falls it is moving at such a speed that the friction causes it to heat up to several million degrees, and this heat then causes the x-rays (McClintock)."
| |
|
Disaster at Three Mile Island, 2000.
A report on how nuclear reactors work, what kinds there are and what happened at Three Mile Island.
3,245 words (approx. 13.0 pages), 7 sources, AU$ 135.95
»
Click here to show/hide summary
Abstract
This report investigates the effects of the nuclear reaction accident at Three Mile Island. It includes a chronology, a detailed description of the after affects, and highlights ways to prevent future disasters such as Three Mile Island. The author also examines the process that nuclear reactors use to harness nuclear energy, and describes the many types of reactors out there.
From the Paper
"Three Mile Island? To many, those three words are associated with other words like ?nuclear meltdown?, ?radioactive release?, and ?damaged environment.? Many people know very little about how a nuclear reactor works, what kinds of nuclear reactors there are, exactly what happened at Three Mile Island, and how many dangers could have been prevented. The truths behind these ideas, and facts to back them up are all apparent in this paper."
| |
|
Lasers: A Detailed History and Description, 2001.
Details the history and components of the laser.
1,302 words (approx. 5.2 pages), 0 sources, AU$ 62.95
»
Click here to show/hide summary
Abstract
This paper contains information about the construction and parts of a common laser. The paper also provides a detailed description of how the laser works and discusses some of the dangers and negative aspects of lasers. The paper also covers the different uses of the laser such as leisure use, business use, and home use. Lastly, future possibilities for the laser and how it can still benefit society with uses not yet explored are discussed.
From the Paper
" Lasers are high intensity beams of light emitted from a unit consisting of a flash bulb, a ruby, and opposing mirrors. Theodore Maiman first introduced these extremely strong light beams to the world in 1960. The beam emitted by the laser is very intense and can be damaging or harmful. Although harmful, lasers are also very useful tools for a wide array of tasks. Lasers are used for everything from eye surgery to leveling a ceiling. Lasers are an innovation that has withstood the test of time with people finding new and creative uses for this spectacular invention."
| |
|
Nuclear Reactors and Energy, 1998.
An examination of the process by which nuclear reactors produce energy.
3,015 words (approx. 12.1 pages), 11 sources, AU$ 127.95
»
Click here to show/hide summary
Abstract
This paper explains how a nuclear reactor produces energy. The paper includes a discussion of fission, radioactivity, types of reactors and how they produce electricity.
From the Paper
"All modern nuclear reactors operate on the principal of nuclear fission. Nuclear fission is a process in which the nucleus of an atom is split when it absorbs a free neutron after a collision occurs between the atom and the neutron. Splitting the nucleus of the atom releases large amounts of nuclear energy contained within the nucleus. Once the nucleus of the atom is split, multiple neutrons are released which are used to split nuclei of other atoms, causing what is known as a chain reaction. The chain reaction will continue as long as an average of one neutron per fission is absorbed by a nucleus. By harnessing and manipulating the energy that is released, other types of energy can be obtained. The power developed by nuclear fission has been used by man to create, as in the driving of an electric generator and for propulsion, as well as destroy, as in the release of atomic explosion. Whereas the fission in a nuclear reactor is precisely controlled to prevent a nuclear meltdown, the fission in an atomic explosion is not controlled and the shock wave produced by the splitting atom and its resulting chain reaction is equal to several thousand tons of TNT."
| |
|
The Origin of the Universe, 2001.
An in depth look at several evolutionary theories and their relevance.
4,000 words (approx. 16.0 pages), 7 sources, AU$ 156.95
»
Click here to show/hide summary
Abstract
An article about various theories which describe the origin of the universe. The author investigates each theory: steady state theory, geometric theory, small bang theory and big bang theory and provides a personal opinion about the relevance of each.
From the Paper
"Since the dawn of intelligent man, humanity has speculated about the origins of the universe. There is evidence, which indicates that the universe started around 15 billion years ago. This is probably the greatest discovery imaginable; however, the universe still seems to be a very controversial subject. Most scientists agree that there was a beginning but there is a lot of speculation of how it (the universe) actually started. The much-celebrated Greek philosopher, Aristotle, denied the fact that there ever was a beginning. He and his associates believed in the eternal existence of the universe, they also tried to prove that the universe was static, and was unchanging in time. However, there is evidence, which suggests that the universe is changing with time."
| |
|
Quantum Mechanic Theory of the Atom, 1999.
A detailed explanation of the basic principles of the Quantum Mechanic Theory of the atom.
790 words (approx. 3.2 pages), 4 sources, AU$ 41.95
»
Click here to show/hide summary
Abstract
This essay explains the basis of Quantum Mechanic Theory of the atom, which describes the behavior of electrons in atoms & molecules. The author examines this theory and provides a detailed analysis of it.
From the Paper
"The Quantum Mechanics Theory describes the behavior of electrons in atoms & molecules. Quantum Mechanics is also referred to as Wave Mechanics. The theory of quantum mechanics tells us that in the atom, electron waves are standing waves. This theory was devised by Max Planck in 1901. He stated that light is emitted by the atoms of a luminous body in separate packets or bundles of energy called quanta or photons. One or more of the electrons revolving about the nucleus of an atom can be made to jump from one orbit to another. As they do so one or more photons are emitted. This energy radiates from the luminous body as electromagnetic waves. The energy content of a photon determines the length and frequency of the wave. Wave mechanics views the probability of finding an electron at a given point in space."
| |
|
Lighting and Solar Energy, 2000.
This essay discusses the invention of the light bulb and solar power.
2,639 words (approx. 10.6 pages), 9 sources, AU$ 114.95
»
Click here to show/hide summary
Abstract
This paper examines two distinct inventions: light bulbs and solar energy. First it discusses the incandescent light bulb and its inventor, Thomas Alva Edison, and explore the differences between incandescent and fluorescent light bulbs. Then the long history and increasing importance of solar power and its modern applications are discussed.
From the Paper
"On December 31st, 1879, after years of work and many experiments, Thomas Alva Edison gave the first demonstration of the incandescent light bulb at his laboratory in Menlo Park, New Jersey. He was assisted in his invention by Francis Upton, a Princeton Graduate who supplied the mathematical and theoretical expertise that Edison lacked. This invention established Edison?s reputation as the world?s greatest inventor. Before his invention, electric arc lighting was used to produce light. In this lighting system, lights were connected in a series circuit, so if one failed, the rest of the bulbs on the circuit also failed. (First Public Demonstration?)
Edison was able to spend so much time and money on the invention of the light bulb because of his reputation as an inventor. He had the support of financiers such as J.P. Morgan and the Vanderbilts. They established the Edison Light Company and loaned Edison $30,000 for research and development. (First Public Demonstration?)"
| |
|
Terminal Ballistics:The Study of Firing of Projectiles, 2000.
A detailed discussion of certain aspects of terminal ballistics with special reference to impacts on the human body.
1,725 words (approx. 6.9 pages), 9 sources, AU$ 80.95
»
Click here to show/hide summary
Abstract
The paper defines types of ballistics and goes into depth on terminal ballistics, velocity, and one-stop shots. The author discusses the effects and actions of the projectile upon impact of a target specifically the human body. What happens when a bullet strikes human flesh? Dismisses several theories in the field using FBI research.
From the Paper
"The study of the firing of projectiles, their flight and how they strike a target is called ballistics. There are several categories of ballistics including internal ballistics, external or exterior ballistics and terminal ballistics. Internal ballistics is concerned with the behavior of the bullet or projectile from the moment it is fired until it leaves the gun barrel. Exterior ballistics deals with the flight of a projectile after it leaves the barrel. One major effect of the bullet?s flight is the pull of gravity, which causes the bullet to immediately drop after leaving the barrel and fly on a parabolic path. Terminal ballistics however, is concerned with when the bullet hits a target and the effects produced by that bullet."
|
|
|
