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Search results 5431 - 5440 of 7924 matching essays
- 5431: Polymers
- ... named the product celluloid. The prime virtue of polymers is a high strength-to-weight ratio. Industrial-strength polymers surpass titanium in tensile strength. To add strength and improve flexibility, polymers are sometimes fortified with short-fiber additives, mostly fiberglass. This is known as a polymer composite. One particular polymer has three times the strength of tempered steel and is being used in bullet proof vests. Another composite will be used ...
- 5432: Tsunamis
- ... body impacts and supermarine landslides disturb the water because the momentum of the falling object is transferred into the sea and rarely affects coastlines which are a distance from the source. The existing energy is short lived and although powerful, dies down quickly. These features include deep ocean trenches, mountain ranges, and explosive volcanic islands. Most tsunamis originate along the so-called Ring of Fire, a zone of volcanoes and seismic ...
- 5433: Could Air Pollution Have A Negative Impact On Water Quality?
- ... EPA) concludes that the amount of toxaphene in drinking water should not exceed 0.005 mg/L (0.005ppm) and that any release to the environment in excess of 1 pound should be reported. For short-term exposures, EPA concludes that drinking water levels should not exceed 0.5 mg/L (0.5 ppm) for one day or 0.04 mg/L (0.04 ppm) for 10 days7. Toxaphene has been ...
- 5434: The Age Of The Earth
- ... the amount of Carbon 14 in a rock, the age of the rock can be estimated. In the case of inorganic and older rocks, Carbon 14 would not be a good choice because of its short half life. Uranium, which is known to have a much longer half life would be a good alternative. If a pound of the metal Uranium is left to decay, it would take approximately 4.5 ...
- 5435: Ansel Adams
- ... This group made a big difference for the direction of American photography. In 1928 Ansel was an official photographer for the Sierra Club at the Jasper National Park in Canada. In 1932, Ansel opened the short-lived Ansel Adams Gallery for photography along with other arts. Ansel lectured and taught to make his living when his gallery was open. He worked in advertising and began writing articles on photography for magazines ...
- 5436: How Magnets Affect Computer Disks
- ... Disk or a Floppy. These are used in everyday life, in either our workplace or at home. These disks have many purposes, such as: Storing data: Floppies can be used to store software/data for short preiods of time, Transferring data: Floppies are used to transfer/copy data from one computer to another. Hiding data: Floppies are also sometimes used to hide sensitive or confidential data, because of the disk's ...
- 5437: Hollywood and Computer Animation
- ... There, they edit entire features while adding sound that is not only stored digitally, but also has been created and manipulated with computers. Viewers are witnessing the results of all this in the form of stories and experiences that they never dreamed of before. Perhaps the most surprising aspect of all this, however, is that the entire digital effects and animation industry is still in its infancy. The future looks bright ...
- 5438: The Origin Of Humanity
- ... population called survival of the fittest. A theory developed by a scientist named Charles Darwin who had conducted extensive research into the environmental adaptions of animals, for example the adaptation of the galapagos turtles from short neck to long neck so they could reach their food. This theory helps to prove the theory that humans evolved from apes so they could increase their chances of survival. The creationist theory is mearly ...
- 5439: El Nino
- ... the development of coupled models. This data set will increase our understanding of the causes and effects of such large scale ocean-atmospheric phenomena as a El Nino. Peru is an excellent example of how short term El Nino forecasts can be valuable. As in most developing countries in the tropics, the economy (food production in particular) is very sensitive to changes in climate. The year to year changes between above ...
- 5440: Archimedes
- ... by a Roman soldier, who was offended by Achimedes, while the Romans seized Syracuse. Archimedes had a wide variety of interests, which included encompassing statics, hydrostatics, optics, astronomy, engineering, geometry, and arithmetic. Archimedes had more stories passed down through history about his clever inventions than his mathematical theorems. This is believed to be so because the average mind of that period would have no interest in the Archimedean spiral, but would ...
Search results 5431 - 5440 of 7924 matching essays
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