By: Matt Bird
They keep us cool, they provide happy sanctuary on summer days and, sometimes, they make a lot of noise. Air conditioners are a little big, a little clunky and a little inconvenient depending on the model, but they sure get the job done - though...
An introduction to the uses of synthetic fabrics
By: Jennifer Watson - 582581
Synthetic fabrics have been around for almost a century. They have gone from periods of extreme popularity to times of being treated like cheap, unpopular fabric choices. Rayon was introduced in 1910 in the United States. It is used in home furnishings, clothing and tires...
By: Hai Shunxi
The first oil wells, created thousands of years ago, were holes dug by hand at spots where oil seeped to the surface. These first oil wildcatters collected small amounts for medicines and pigments. Once the gooey black liquid's potential for fuel was discovered, enterprising locals...
By: Jerome Carter
Submarines are marine vessels that are designed to operate underwater. Submarines have been mainly developed and used for military purposes. Some submarines, however, are used for research, recreational and commercial reasons.Modern submarines are typically cigar-shaped, with hulls that are designed to withstand the pressure...
By: Alice Shoaf
A submarine is a type of watercraft designed to float on the surface of the water, and also to operate submerged under the water. Submarines range in size from small single-man submersibles, to giant navy boats carrying hundreds of men. All work basically the same...
By: Dr Pandula Siribaddana
The first reported submarine was designed as early as the year 1620 when a Dutchman named Cornelius van Drebbel experimented with a raw boat covered with waterproof leather skin. However, not much information is available regarding his experiment and the vessel that he created could...
By: Dr Pandula Siribaddana
Thomas Edison did the first sound recording in 1877 with the help of a moving needle attached to a vibrating diaphragm in response to sound. With time, the technology involved in sound recording has advanced immensely and it is possible to capture even the minute...
By: David Braybrooke
Radar is a system of object detection using electromagnetic waves, more precisely, radio waves, to calculate the speed and direction, range and altitude of fixed or moving objects. Ships, aircraft, weather systems, vehicles, fired weaponry, geographical land features and even spacecraft can be traced and...
By: John Traveler
In 1877, American inventor Thomas A. Edison introduced the first machine which could produce an analog recording of sound. He called the invention the phonograph. The phonograph remained in vogue for a hundred years until a new method of digital recording replaced it.Over a...
By: Karen Bledsoe
Anyone who has flown in an airplane has probably wondered, as they stared down at the ground far below, what it is that keeps an airplane up in the air? The answer is simple: lift. However, understanding what lift is all about is complex, and...

 

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