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Radio Wave Service Providers
1,531 wordsBandwidth is the capacity for carrying digital information. In the past few years, bandwidth has been increasing at roughly twice the rate of computing power. Data traffic has been doubling every 100 days (according to the U. S. Department of Commerce) and it is predicted that that Internet traffic will reach 16 million terabytes by 2003. Fiber is the transport medium of choice. It out performs copper, coaxial cable, and high frequency radio in data-carrying ability. As service needs increase, f...
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Earths Surface Earths Atmosphere
2,475 wordsPropagation as defined by Webster Dictionary as the phenomenon of radio frequency energy traveling through the earths atmosphere, as well as through the empty space above the atmosphere. Once radio-frequency energy has been emitted from an antenna it will travel away from the antenna, where it is generated from, at the speed of light. Once it is sent the wave exists and propagates independently of the system that produces it. This means that changes, which occur at the transmitter (antenna), wil...
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Electromagnetic Waves Cellular Phones
1,546 wordsRadio-wave technology is one of the most important technologies used by man. It has forever changed the United States and the world, and will continue to do so in the future. Radio has been a communications medium, a recreational device, and many other things to us. When British physicist James Clerk Maxwell published his theory of electromagnetic waves in 1873, he probably never could have envisioned the sorts of things that would come of such a principle (White). His theory mainly had to do wi...
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Compton Electromagnetic Waves
1,525 wordsRadio-wave technology is one of the most important technologies used by man. It has forever changed the United States and the world, and will continue to do so in the future. Radio has been a communications medium, a recreational device, and many other things to us. When British physicist James Clerk Maxwell published his theory of electromagnetic waves in 1873, he probably never could have envisioned the sorts of things that would come of such a principle. His theory mainly had to do with light...
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Radio Waves Radio Frequency
584 wordsRadio waves travel at 186, 000 miles per second through air. In contrast, sound waves travel at only 1 / 5 of a mile per second. If a modulation is made of the radio wave that exactly reproduces the amplitude and frequency characteristics of the original sound wave, then sound can be transmitted rapidly over long distances. This leads to a very interesting phenomena. During a live broadcast in New York, the music will reach listeners in California a fraction of a second before it can be heard by...
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Cerebral Cortex Spinal Cord
1,669 wordsThe Human Brain and Methods of Discovery The human nervous system consists of several parts. The main structures are the brain and the spinal cord. The system includes nerves that sense external and internal stimuli and then relay the information to the central processing unit the brain. The brain is the portion of the vertebrate central nervous system that constitutes the organ of thought and neural coordination. It includes all the higher nervous centers, receiving stimuli from the sense organ...
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