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Sodium Chloride Earth Crust
745 words
Sodium has an atomic number of 11 and a mass of
about 23 g. It is a silvery white-metallic element
classified under the alkali metals. Sodium has
been known since early times and was used by the
people of Mesopotamia and Egypt to make glasses.
Sodium is the sixth most common element found on
the earth. It is usually not found in nature but
more often in compounds such as salt (NaCl).
Sodium conducts heat and electricity easily.
Without this element life could not exist. Each
compound is used for...
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Radio Telescopes Radio Waves
1,285 words
... copes Orbiting telescopes are used to observe
the ultraviolet (UV), far infrared, and X-ray
portions of the electromagnetic spectrum. The
Infrared Astronomical Satellite, placed in orbit
in 1983, carried a 22. 5 -inch infrared telescope.
Because all matter emits infrared radiation if
warm, technologists had to cool the telescope to
near absolute zero with liquid helium so its
internal heat radiation would not mask radiation
it was collecting from deep space objects. Among
its many discoverie...
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Back To Earth Space Ship
1,207 words
One day I went to the computer shop and I bought a
new computer game. The box in which was the
computer game was, looked very nice and I couldnt
resist to buy it. Next day my parents were leaving
to France and I was alone Ok not exactly alone,
the baby-sitter that looked after me when I was
little came to our house to look after me for 1
week. She was young and she wasnt a really
baby-sitter because she cared more about her hair
and nails than about me. Later when it was dark
she went out with h...
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Infamous Day Killed 13 School
403 words
The most tragic school shooting in American
history took place on April 20, 1999. On this
infamous day in history two Columbine high school
students killed 13 and wounded 21 before they took
there own lives. It is not clear why they chose
this day, but it may be because this was the 110
th anniversary of Adolf Hitlers birthday. What
happened on this day was a tragedy that affected
not only Columbine, but the whole country as well.
At 11: 10 a. m. both shooters pulled into parking
spaces belongin...
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Ability To Withstand Engineering Material Titanium
639 words
Titanium was discovered in 1791 in the mineral
menachanite by the British clergyman William
Gregor, who named the new element malachite. Four
years later, the German chemist Martin Heinrich
Klaproth rediscovered the element in the mineral
rutile and named it titanium in allusion to the
strength of the mythological Greek Titans. The
metal was isolated in 1910. The element is present
in meteorites and the sun. It is used in many
things that enhance everyday life such as fashion
apparel, medical eq...
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Valence Electrons Solar Cells
1,438 words
Introduction Our world has been in existence for
billions of years and throughout all those years
we have used the sun for basic energy needs. So
why not be able to harness that energy and use it
to power things like our homes or our cars? Many
scientist have been developing alternate forms of
energy called Green Energy. Green power is the
solution to creating a cleaner, sustainable energy
system. Renewable energy -- power from the sun,
wind, plants, and moving water -- is a natural way
to meet ...
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N Type Silicon Crystal Of Silicon Resist
638 words
Inside every modern computer or other
data-processing wonder is a microprocessor bearing
millions of transistors sculpted from silicon y
chemicals and light. Silicon, the second most
abundant element on Earth, is used extensively in
transistors, integrated circuits, photoelectric
devices, and other electronic devices. A pure
crystal of silicon does not conduct electricity
unless traces of other substances are diffused or
doped onto it. Therefore silicon must be
manufactured in a specific way in ...
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000 Short Tons Ways To Detect Copper
699 words
Blake Adams Period 3 Grade 8 2 / 5 / 97 Copper is
a mineral. it is not a plant or a animal. Copper
is a metallic metal. It can never be broken down
into different substances by normal chemical
means. Copper was one of the first metals known to
humans. People liked it because in it's native
condition, it could easily be beaten into weapons
or tools. Copper has been one of the most useful
metals for over 5000 years. Copper was probably
used around 8000 B. C by people living along the
Tigris and Eu...
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Carbon Dioxide Greenhouse Effect
687 words
How Can We Protect Environment Nowadays protection
of the environment is very crucial, as the world
is moving into a new era without considering any
of the major problems of pollution with rapid
industrialization. The best way to protect the
environment is conservation. Conservation is the
philosophy and policy of managing the environment
to assure adequate supplies of natural resources
for future as well as present generations. The
primary conservation concern here is with fossil
fuels. Solutio...
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Taste Of Victory Senses Sight Feel
741 words
My 20 Interests and Analysis Among all hobbies and
activities there are several things I like most of
all. Probably, one can say that Im quite active
person and I like going in for sports. I like
playing football, basketball, hockey and
volleyball. I like playing these games because I
adore command kinds of sport. In these games you
feel responsibility for the people you are playing
together. They rely on you and you have to use all
your five senses: sight, hearing, touch, scent,
and taste. When...
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Kurt Cobain Gave Birth
1,437 words
Pop Music and Me: Music of the 1990 's Grunge was
the popular style of our juvenile age. We got used
to it when we were teenagers. Grunge shaped our
culture, our world outlook and our viewpoints. The
phenomenon of grunge is worth our attention to
observe. We listened to Nirvana and Pearl Jam. We
idolized Kurt Cobain and his songs. We loved
grunge when we were teenagers and we dont shift
our ground until now. Grunge is interesting by the
fact that it didnt bring anything completely
innovative int...
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Full Metal Jacket Stanley Kubrick
1,680 words
The Vietnam War, was not even a war, it was a
Police Action. The young men who fought for their
country had other views of what it was. This war
showed how power hungry the U. S. was to influence
the world. I thought the Vietnam War was a serious
misallocation of troops, money, resources and
time. The Vietnam War was a perfect platform for
the U. S. to show the world how belligerent we
were to stop the spread of communism. Some
observers in the United States questioned the
administrations policy...
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Yin Yang Digestive Tract
1,570 words
Traditional Chinese Medicine Chinese Medicine
Traditional medicine of China has a long
historical and cultural background dating back
about 2500 years. The ancient Chinese people were
able to reach a level of social stability that
included the ability to treat disease of
emotional, physical, and spiritual origins.
Although a belief in spirits as the cause of
disease has remained in China even to the present
day, the view that the body obeyed a natural order
struck a chord in the intellectual eli...
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Roman Catholic Church Middle Ages
1,104 words
In the year 1305 the Roman Catholic Church was
relocated from Rome to France. With this the power
of the papal states was divided among the regions
leading families. Starting near the year 1300 the
demand for reform began to grow at a rapid pace.
By the 1600 s close to half of the practicing
Catholics in western Europe had left the Church to
join one of the new reformer religious groups.
This reform brought about new ways of thought and
new attitudes towards religion and the human race.
The youn...
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Henri Becquerel Marie Curie
1,241 words
Henri Henri Becquerel Henri Becquerel Henri
Becquerel, a French physicist, was born in Paris
on December 15, 1852. His grandfather,
Antoine-Cesar Becquerel, had fought at the battle
of Waterloo in 1815 and later earned a
considerable reputation as a physicist. He made
important contributions to the study of
electrochemistry, meteorology, and agriculture.
Henri father, Alexander-Edmond Becquerel, also
made a name for himself in science. His
research-included studies on photography, heat,
and the ...
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Left Hand Long Time
1,105 words
Instruments of the Orchestra Strings: The viola is
an important member of the orchestra, but is not
often heard by itself. Because it is bigger than
the violin, with longer strings, it makes a rich,
warm sound that is lower in pitch. In contrast to
the viola the violin is the smallest member of the
string family. Because its strings are the
shortest, it produces the highest sound. The viola
is a little heavier, and its shape is slightly
different, too. But it is still played on the
violist? s le...
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Four Months Customs House
645 words
JAMES A. GARFIELD James A. Garfield was born in
Cuyahoga County, Ohio, in 1831. His father died in
1833, when Garfield was only two years old and so
his mother had to carry on working the family farm
by herself. With the death of his father, the
family feel into poverty. Even though they had
very little money, his mother made sure that her
children went to the neighborhood school to get a
good education. He belonged to the Disciples of
Christ Church. While growing up, James drove canal
boat team...
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Steam Engine James Watt
1,257 words
James Watt was born 19 th January 1736 at Greenock
and at this time no one would have even imagined
his effect on the Industrial Revolution that was
to occur within that century. When James was
fifteen he had read books about and become
accustomed to Philosophy (similar to modern
physics). He had also completed many of his own
chemical experiments and even started produce and
construct his own products such as a small
electronic device that startled his companions. He
soon became interested in a...
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English And Swahili Kenya Economy Country
1,371 words
A Study of Kenya As one of the many different
developing countries in Eastern Africa, Kenya is
unique in its own way. With its mangrove swamps,
thick forests, crystal lakes, towering mountains,
and vast deserts; this is all wrapped up in a
country the size of Texas. It attracts millions of
visitors in seek for an African Safari which is
much appreciated by the government as a source of
foreign capitol for this poor region. We will take
a look at the history which shaped this country
into what it...
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Plant Cells Genetic Material
329 words
Methods for Genetically Engineering a Plant Two
very different techniques exist for giving a plant
new genetic characteristics. But both share
several steps. Step 1: The DNA that encodes the
genetic information for the desirable trait must
be isolated. At step 2, the different techniques
diverge into an a path and a b path: In Step 2 a,
the new DNA is linked to a circular ring of
genetic material called a transfer plasmid.
Plasmids act like molecular taxicabs that carry
genes from one place to a...
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