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» Science Essays and Papers
Remotely Operated Vehicles
<view this essay>.... system, a tether
management system and some usually have an on board camera. ROV's have been
used for the last thirty years. They have been doing tasks that divers can't, do
to Economical and safety reasons.
A Submersible is a piece of machinery designed to do an underwater function.
Submersible's and rov's are important to Marine biologists so they can study
underwater creatures. Geologists can use them to find out more about the
evolution of the Earth by studying the ocean floor. The ocean holds some
minerals that are becoming scarce on the Earth's surface. If we can set up
mining stations under the water it would also provide many jobs.
Undersea .....
Number of words: 278 | Number of pages: 2 |
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How Technology Effects Modern America
<view this essay>.... and by about 7% for those with some college education. Only
the wages of college graduates are up.
Of the fastest growing technical jobs, software engineering tops the list.
Carnegie Mellon University reports, “recruitment of it’s software
engineering students is up this year by over 20%.” All engineering jobs
are paying well, proving that highly skilled labor is what employers want!
“There is clear evidence that the supply of workers in the [unskilled
labor] categories already exceeds the demand for their services,” says L.
Mishel, Research Director of Welfare Reform Network.
In view of these facts, I wonder if these trends are good or bad for
so .....
Number of words: 1229 | Number of pages: 5 |
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Alcoholism An Intrepretation
<view this essay>.... medium to help him or her deal with physical, emotional, or spiritual needs.
To understand alcoholism, it must first be understood what this affliction is dependent on. Alcohol is a substance that is made by the fermentation of fruits, grains, or miscellaneous other organic materials. The chemical, alcohol, is a depressant and acts on every cell in the human body. Due to this, the central nervous system, along with the pleasure centers of the brain, are affected resulting in a feeling of euphoria and a sense of well being. After repeated exposure, the brain becomes dependent on this drug to unburden itself whenever it feels the compulsion. Several factors th .....
Number of words: 679 | Number of pages: 3 |
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Global Warming
<view this essay>.... 0.05 C per decade cooling." The reports of a rising climate are not accurate. The supporting measurements are taken from the surface. These readings do not cover enough of Earth's surface to be considered accurate. Also, even if they covered 100 % of the ground temperature 70 % of the Earth is water so the readings would still not be acceptable. Orbiting satellites cover 99 % of the Earth's surface. According to surface-based temperatures, 1997 was the warmest year on record. According to U.S. government satellites and weather balloons1997 as the seventh coolest year since satellite measurements began in 1978. Further more, satellite and balloon based i .....
Number of words: 368 | Number of pages: 2 |
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Boiling Water
<view this essay>.... of the water).
In the liquid, the water molecules are attracted to one another by their very nature and further held together by the pressure of the atmosphere pushing down on the surface of the liquid. As they are heated they gain energy to begin to pull away from one another. When they gain enough energy, they are able to separate and to overcome the force of the atmospheric pressure and form the gas (water vapor) that makes up the bubbles you see in the boiling process. The standard temperature at which this occurs is 100 C or 212 F. In the very early stages of heating, you may see some small bubbles even though the water is only warm. This is some air .....
Number of words: 340 | Number of pages: 2 |
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Biological Warfare
<view this essay>.... of these types of viruses and bacteria are becoming widespread in many areas of the world because they can affect many people efficiently and are cost effective.
Biological weapons can ve traced back to Exodus when God placed the ten plagues upon the Egyptians, as a result of Pharaoh’s refusal to free the Jews from slavery. These plagues included blood, frogs, vermin, flies, murrain, boils, hail, locusts, darkness, and the slaying of the first born. Even though this type of warfare may have had origins as early as Exodus, the methods of making these germs is described in scientific literature and is no secret to terrorists.
This germ warfare is an especially .....
Number of words: 1787 | Number of pages: 7 |
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Rutherford
<view this essay>.... He directed
alpha particles at a thin sheet of gold foil and expected
the particles to simply travel straight through the foil.
However, he obtained very different results. Although
many of the particles did in fact go straight through the
foil, some of them were deflected at large angles.
Rutherford concluded that the deflections of the alpha
particles were caused by a center of positive charge that
contained most of the atom's mass (the nucleus). He also
explained that the particles that went straight through the
foil did so because the atom is mostly empty space and
that the distance between electrons and the nucleus is
vast compared to the size of the .....
Number of words: 359 | Number of pages: 2 |
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Microbursts
<view this essay>.... The specific characteristics of microburst wind shear defined are
those occurring in the takeoff and landing regime (Harpool 2).
The key to understanding development of wind shear below the bases
of convective clouds is a good knowledge of the characteristics of a
typical precipitation-induced downdraft. Not all precipitation-induced
downdrafts are associated with critical wind shears. However, there are two
types of down drafts that are particularly hazardous to flight operations
because of there severity and small size. Professor T. Fulita, an
atmospheric scientist from the University of Chicago, coined the term
downburst for a concentrated, sever d .....
Number of words: 1333 | Number of pages: 5 |
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