Science Essays

Satellites
Satellites Satellites orbit the earth doing our bidding in ways that enrich the lives of almost all of us. Through electronic eyes from hundreds of miles overhead, they lead prospectors to mineral deposits invisble on earth’s surface. Relaying communications at the speed of light, they shrink the planet until its most distant people are only a split second apart. They beam world weather to our living room TV and guide ...

Saw Wheat Owl
Saw Wheat Owl The saw whet is rarely heard at night, unless it is during mating season. During it’s mating season it can be heard easily from the woods. It’s breeding season in between March and April. Usually the nest in is a hollow tree. Decayed wood fibre matted with owl’s feathers is supplemented with a small quantity of soft, dry grass. The number of eggs laid is usually between 4-7.Laying begins in early April. The nests can be anywhere from 2-12m off the ground. Inc...

Semiconductors
Semiconductors Silicon is the raw material most often used in integrated circuit (IC) fabrication. It is the second most abundant substance on the earth. It is extracted from rocks and common beach sand and put through an exhaustive purification process. In this form, silicon is the purist industrial substance that man produces, with impurities comprising less than one part in a billion. That is the equivalent of one tennis ball in a string of golf balls stretching from the ...

Sickle Cell Anemia
Sickle Cell Anemia There have been many researches and tests done on the genetic causes of Sickle Cell Anemia and how it developes, as well as it’s effects on the circulatory, muscular, and respiratory systems, as well as it’s effects on the joints and other systems of the body, and the complications associated with them. Most of the research has been done to explore on the reasons why it mostly effects the African-American community and people who are from the West Coast of...

Simeon Poisson Biography
Simeon Poisson - Biography Simeon Poisson’s most important works were a series of papers on definite integrals and his advances in Fourier series. Originally forced to study medicine, Poisson began to study mathematics in 1798 at the Ecole Polytechnique. His teachers Laplace and Lagrange were to become friends for life. A memoir on finite differences, written when Poisson was 18, attracted the attention of Legendre. Poisson taught at Ecole Polytechnique from 1802 until...

Skyscrapers
Skyscrapers Picture in your mind the skyline of downtown Toronto. There’s the CN Tower, of course, and the 72-floor First Canadian Place, the city’s tallest skyscraper. Cascading from there are the assorted banks and hotels and insurance towers. Now, use your imagination to construct some new buildings, these ones reaching three, four and five times higher than the others. Top it all off with a skyscraper one mile high (three times as high as the CN Tower). ...

Social and Political Reactions to Mormon Polygamy
Social and Political Reactions to Mormon Polygamy April 29, 1996 Social and Political Reactions to Polygamy “We are a peculiar people,” Elder Bruce R. McConkie once said (McConkie 25). The Church of Jesus Christ of Latter-day Saints is one of a few “odd” Christian religions. Many of its practices have created much persecution and political reaction, polygamy being one of these. It created much social and political persecution of the Mormons. Most of this perse...

Sociology The Comparative Method
Sociology - The Comparative Method Sociologists have embraced what is known as the comparative method as the most efficient way to expose taken-for-granted ‘truths’ or laws that people have adopted. But what is this comparative method and how does it work? Are there any advantages/disadvantages to exposing these false ‘truths’. What forms or variations of the comparative method exist? In the pages to follow I will attempt to give you some insight a...

Morse Code
Morse Code The Alphabet is: A .- B -… C -.-. D -.. E . F ..-. G –. H …. I .. J .— K -.- L .-.. M — N -. O — P .–. Q –.- R .-. S … T - U ..- V …- W .– X -..- Y -.– Z –.. 1 .—- 2 ..— 3 …– 4 ….- 5 ….. 6 -…. 7 –… 8 —.. 9 —-. 0 —– There you have it! There are also puncuation marks but not included here. I History, the morse code ...

Muscular System
Muscular System Do you think muscles are important? Do you have an idea of what they are made of? Well, here is some food for thought: your muscles make up forty percent of your body weight. If you like that interesting fact maybe you’ll learn some more. The muscular system has three main types of muscles. These are: smooth, skeletal and cardiac muscles. Your smooth muscles are what line most hollow organs and these are involuntary muscles. If you are wondering ...

Nanotechnology
Nanotechnology Curtis Shephard Nanotechnology: Immortality or total annihilation? Technology has evolved from ideals once seen as unbelievable to common everyday instruments. Computers that used to occupy an entire room are now the size of notebooks. The human race has always pushed for technological advances working at the most efficient level, perhaps, the molecular level. The developments and progress in artificial intelligence and molecular technology have spawned...

Newtonian Absolute Space
Newtonian Absolute Space When Newton proposed his axioms describing fundamental laws of physics, he insisted on the necessity of absolute space to a completed theory of mechanics. Absolute space can be best described as not-relationally-dependent space. Newton purports that there is something more to space than just being a vessel to conceptualize positional differences between specific bodies; he claims that there is some objective truth to space — that spatial differen...

Nitrate Contamination of Groundwater Poses a Serious Health Threat
Nitrate Contamination of Groundwater Poses a Serious Health Threat Nitrates contamination of the world’s underground water supply poses as a potentially serious health hazard to the human inhabitants on earth. High nitrate levels found in well water has been proven to be the cause for numerous health conditions across the globe. If we intend to provide for the future survival of man, and life on planet earth, we must take action now to assure the quality of one of ou...

Nuclear Waste
Nuclear Waste Radioactive wastes, must for the protection of mankind be stored or disposed in such a manner that isolation from the biosphere is assured until they have decayed to innocuous levels. If this is not done, the world could face severe physical problems to living species living on this planet. Some atoms can disintegrate spontaneously. As they do, they emit ionizing radiation. Atoms having this property are called radioactive. By far the greatest number of uses for ra...

Operating systems
Operating systems What is Operating System? An operating system is a program that acts an intermediary between a user of a computer and the computer hardware. The purpose of an operating system is to provide an environment in which a user can execute programs. The main purpose of an operating is to make the computer system convenient to use and user can the computer hardware in an efficient manner. An operating system is similar to a government. The components of a computer sy...

Order Odonata
Order Odonata The order Odonata is divided into three suborders: The Zygoptera, or damselflies, which can fold their wings over their abdomen, the Anisoptera or Dragonflies which can’t, and thus hold their wings straight out from their thorax, and the Anisozygoptera, an ancient suborder possible once containing the seeds of both the other 2 more modern suborders but now containing only two species from Japan. You are likely to see plenty of dragonflies as you go out into ...

Organism Adaptations
Organism Adaptations 1)stimulus: a change in the environment that necessities a response, or adjustment by an organism (ex. swirling dust) response: the adjustment or change you make to a stimulus (ex. blinking your eyes) 2)Protists respond to a negative stimuli by moving away from it. Protists respond to: light, irritating chemicals, temperature, touch, etc. 3)Yes, they grow towards the stimulus (ex. light). photoropism: it means the organism grows towards the light. no geotrop...

Ovarian Cancer
Ovarian Cancer Of all gynecologic malignancies, ovarian cancer continues to have the highest mortality and is the most difficult to diagnose. In the United States female population, ovarian cancer ranks fifth in absolute mortality among cancer related deaths (13,000/yr). In most reported cases, ovarian cancer, when first diagnosed is in stages III or IV in about 60 to 70% of patients which further complicates treatment of the disease (Barber, 3). Early det...

Penguins
Penguins Myopic little men in tuxedos, or highly efficient land/water animals? Recent research indicates there’s more to penguins than meets the eye. If you’ve every wondered what it would be like to be able to see as clearly under water as you can on land, just ask the nearest penguin.Most aquatic animals are short-sighted on land. Most terrestrial animals (and that includes us) are far-sighted under water. But researchers have discovered that penguins can appar...

Philosophy of Time and Space
Philosophy of Time and Space Mickey Mantle: What time is it? Yogi Berra: Do you mean right now? Though there are many analogies between time and space, there appear to be three commonplace yet deeply perplexing features of time that reveal it to be quite unlike space. These can be called ‘orientation’, ‘flow’ and ‘presence’. By orientation I mean that there is a direction to time, a temporal order between events which is not merely a reflection of how they are ob...

Phosphates in Water Pollution
Phosphates in Water Pollution Phosphates may be created by substituting some or all of the hydrogen of a phosphoric acid by metals. Depending on the number of hydrogen atoms that are replaced, the resulting compound is described as a primary, secondary or tertiary phosphate. Primary and secondary phosphates contain hydrogen and are acid salts. Secondary and tertiary phosphates, with the exception of those of sodium, potassium and ammonium are insoluble in water. Tertiary s...

Physics Relevance
Physics Relevance By hottim@hotmail.com One aspect of physics in my life is gravity. Whenever I loose my balance, whether I’m on a bike, walking, or trying to stand on one leg, I will fall down. This is because every mass is attracted to every other mass, so my body is attracted to the earth, and the earth is attracted to my body, only not as much, because my body has a much smaller mass than the earth. This is also why when I drop something; it falls down, instead of ju...

Lanfills
Lanfills It has long been believed that the largest entity brought upon the Earth by humankind is the Pyramid of the Sun, constructed in Mexico around the start of the Christian era. The mammoth structure commands nearly thirty million cubic feet of space. In contrast, however, is the Durham Road Landfill, outside San Francisco, which occupies over seventy million cubic feet of the biosphere. It is a sad monument, indeed, to the excesses of modern society [Gore 151]. One m...

Leprosy
Leprosy Leprosy is a chronic bacterial disease of the skin, nerves in the hands and feet and, in some cases, the lining of the nose. Leprosy is a rare disease in the United States. Anyone can get leprosy, but children seem to be more susceptible than adults. It is not clear how the leprosy germ is spread, but household and prolonged close contact is important. The germs probably enter the body through the nose and possibly through broken skin. The germs get in the air through n...

Light Waves
Light Waves In this universe there are many thing that we cannot explain. Among these many things is light. Light, as far as we know, come in different wavelengths and the size of the wavelength determine what type of light it is. The middle wavelength lights are what gives us the seven basic colors of red, orange, yellow, green, blue, indigo and violet. Beside these visible lights there are the lights that cannot be seen by the human eye. These invisible lights can be group...