Technology

What are airplanes made of?

Nov 28th, 2008 | By

Mostly all the airplanes are made up of the light and strong metal because the plane has to fly in the air and it is always tried that the weight of the plane’s body should be minimum. Its frame is mostly made up of aluminum which is a light metal. 747-8 was the last aircraft
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How a refrigerator works?

Nov 25th, 2008 | By

Refrigerator is found in almost everybody’s kitchen. It is used to store the leftover food instead of throwing it and helps to keep the things cold. Air conditioning and refrigeration work on the same idea. It does not cool but removes the heat so that food could be kept for longer period. The gas is
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When was electricity invented?

Nov 17th, 2008 | By

George Carlin says “electricity is just organized lightening” or we can say that electricity always existed it was not invented instead it was discovered. It has become a very important part of today’s life. Most of the things and appliances we use run on electricity. The credit of discovery of electricity is however given to
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How does a camera work?

Nov 17th, 2008 | By

Photography is a passion shared by professionals and amateurs alike. With the advent of modern digital technology, it has become extremely simple to click, store, send and print the pictures. Photographs are an excellent way of storing your memories. Traditional Cameras use the varying light intensities to save the image on photographic film. While digital
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How do we find directions in the sea?

Nov 14th, 2008 | By

Mariners have always used the position of the latitude and the longitude to seek directions in the sea as well as mark their relative positions in the sea. Historically, they would calculate their position by looking at the North Star Polaris with a sextant when they sailed the waters in the northern hemisphere. GPS navigational
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How does a ballistic missile work?

Nov 7th, 2008 | By

Ballistic missiles are large and powerful missiles that are designed to attack a long-distance target carrying a warhead that may also be a nuclear warhead. These missiles use a suborbital trajectory and may sometimes reach higher than space altitudes (over 100 km), exiting the earth’s atmosphere before they drop on other continents. Sometimes they can
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How close are we to developing cyborg?

Nov 7th, 2008 | By

The basic idea of cyborg is a humanoid i.e. part human and part machine. The word “cyborg” was coined by a group of scientists working at NASA. In 1960, two scientists of NASA had discussed the probable advantages of a human that could have machine parts fitted and would work perfectly in external space. The
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How does a laser printer works?

Nov 5th, 2008 | By

Laser printer works on a principle called the static electricity. A charge is built up on any object that can be a balloon, your body etc. we know that atom with opposite charge attracts each other and the objects bind with the others having atoms of opposite static electricity. There is a drum present in
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How capacitors work?

Nov 2nd, 2008 | By

A capacitor or condenser is a passive electronic module that has a pair of conductors and is separated by a dielectric or insulator. While a probable difference subsists across the conductors, an electronic field is present in the dielectric. This electronic field stores energy and creates a mechanical energy between the conductors. The result is
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Who invented the steam engine?

Oct 26th, 2008 | By

The credit for inventing the steam engine cannot be given only to a single inventor as several contributions were made centuries ago. Dating back to the first century A.D, the idea of steam engine was first conceived by a Greek scientist and mathematician called Hero of Alexandria. Credit is given to this great mathematician for
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