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Free research essays on topics related to: high frequency

16 results found, view free essays on page:

  • Solid State Lasers Back And Forth
    2,014 words
    Laser is an acronym for light amplification by stimulated emission of radiation. In the last century many types of lasers have been used for many different applications from welding to surgery to military and even many uses in every day life by harnessing the principles of light and stimulated emission. To understand how lasers work we must first understand the physics behind light waves. Light is emitted from a source and travels in straight lines and when it strikes an object is either absorbe...
    Free research essays on topics related to: stimulated emission, compact disk, back and forth, solid state lasers, laser light
  • Noise Reduction In Hearing Aids
    1,358 words
    Recently in a local hearing clinic, a clients concerns were discussed. Im afraid I wont like them. My brother in law bought two hearing aids, and he keeps them in a drawer in the kitchen. While the number of people dissatisfied with their hearing aids hovers around 50 %, the hearing aid industry is hard pressed to decrease the number of returns, and increase the average daily use of each aid. In order to accomplish this, hearing aid manufacturers must answer the most often heard complaint: It do...
    Free research essays on topics related to: hearing aids, significant difference, hearing impaired, signal processing, low levels
  • Noise Reduction In Hearing Aids
    1,312 words
    ... en adjusting for both noise, and sound quality. The most versatile type of ASP (automatic signal processor) comes from PILL circuitry that can provide either a BILL or a TILL response. In order to accomplish this, the instrument must have a minimum of two channel compression. (Tobin 1997) In effect, the audiologist can choose which type of processing better suits his client, while taking into consideration the subjective needs of his client. Presumably, PILL type hearing aids cost more than ...
    Free research essays on topics related to: high frequency, sound quality, signal processing, hearing, hearing aids
  • Unwanted Sound Effect The Physiological And Psychological
    1,875 words
    ... the situation. Causes of stress are called stressors. These are outside forces that place unusual demands on a person's body or mind. In this case, the sound is playing an unusual and unwanted demand on the human ear, and the human body as a whole. Reactions to stress include impatience. Impatience leads to negative attitude, which lead to tension and anxiety. Your attitude towards the unwanted sound may also effect your level of stress. If you perceive the noise as unnecessary and preventab...
    Free research essays on topics related to: stress levels, hearing loss, noise pollution, human body, psychological effects
  • Evidence To Support Lot Of Money
    1,351 words
    HAARP is an extremely low frequency radio wave generator. It stands for High Frequency Active Auroral Research Program. It is a massive antennae array up in Alaska on the Copper River Basin. It's altitude fluctuates between 1000 and 3000 feet above sea level. It is operated by the US military, more specifically the Navy and Air Force. It operates between 2. 8 and 10 MHz. It was also voted one of the 10 most under reported news stories of the year by journalists. Scientific Perspectives HAARP is ...
    Free research essays on topics related to: large amounts, electromagnetic waves, jet stream, evidence to support, lot of money
  • Evidence To Support Area Of Study
    2,092 words
    ter> Grave Offenses vs. Tendentious Misconstruals The David Abraham Case The historical field concerning the Weimar Republic, Germany's parliamentary government during the interwar years, is not only an extremely sophisticated area of study, but an extremely competitive one as well. In the early eighties, a much heated and unprecedented scholarly dispute arose surrounding The Collapse of the Weimar Republic, written by David Abraham at the time, a fledgling historian and assistant prof...
    Free research essays on topics related to: weimar republic, marxist theory, nazi movement, area of study, evidence to support
  • Socio Cultural Environmental Influences
    1,036 words
    ... lation-adjusted average employee wages falling from $ 42, 928 in 1978 to $ 37, 985 in 1988. About 20, 000 airline industry employees were laid off in the early 1980 s, while productivity of the remaining employees rose 43 % during the same period. In a variety of cases, bankruptcy filings were used to diminish the role of unions and reduce unionized wages. When Southwest began flying to three Texas cities, the firm had three aircraft and 25 employees. Initial flights were out of Dallas older...
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  • Electromagnetic Waves High Frequency
    390 words
    Aurora Borealis, " a name meaning "northern dawn" in Latin, is a phenomenon that occurs once every seven years in the Northern Hemisphere of Earth. Also known as the Northern Lights, it originates in the atmosphere very high above the Earth's surface. The light is emitted when charged particles from the Sun are guided by the earth's magnetic field into the atmosphere near the magnetic poles. When these particles collide with atmospheric molecules, primarily oxygen and nitrogen, at 100 - 300 kilo...
    Free research essays on topics related to: sounds, high frequency, waves, frequency, electromagnetic waves
  • Risk Management Program Paramount Canada Wonderland
    1,427 words
    Background Information Toronto's, Paramount: Canada's Wonderland (PCW) is located just outside the city of Toronto, Ontario. This particular outdoor theme park provides guests with over 200 attractions (Victoria Falls High Divers and Arthur's Base Stunt Show), wild rides (Shockwave TM and Drop Zone Stunt Tower), a wide selection of roller coasters and a 20 -acre water park for the whole family. The park is open starting near the end of May and stays open until the end of September or early Octob...
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  • Stress Hormones Mozart Music
    631 words
    The latest research demonstrates that music therapy has a variety of healing effects. A study was conducted on three separate coronary care units in hospitals. One group received only standard care, the second group practiced a form of meditation, and the third group listened to sedative classical and popular music. The patients who received only the standard care all showed high levels of stress hormones in their blood, and rapid heart rates. These are both undesirable reactions that can impair...
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  • Wide Variety High Frequency
    1,386 words
    Intrusion Detection Systems When it comes to protecting the security of assets, organizations have many options to choose from. From basic alarms to the varied sensors that are available, there are many variations on security, and organizations should make a thought out choice based on the specific needs and dangers of its location, as well as any other factors including what needs to be protected, and from whom. These needs will determine the type and scope of the system to best protect against...
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  • Hearing Loss High Frequency
    315 words
    Filtered Speech Experiment Purpose The purpose of the filtered speech experiment was to look for three things. The first was to see / hear which frequencies can be eliminated from speech signal and conversely which frequencies can not in order to understand speech. The second purpose was to learn more about sound filters; and the third was to understand what it is like to experience hearing loss. Instrumentation The instruments we used during this experiment were: 1) Low pass filter of the Coulb...
    Free research essays on topics related to: 1000, hearing, high frequency, hearing loss, frequency
  • Evidence To Support Lot Of Money
    1,319 words
    HAARP is an extremely low frequency radio wave generator. It stands for High Frequency Active Auroral Research Program. It is a massive antennae array up in Alaska on the Copper River Basin. Its altitude fluctuates between 1000 and 3000 feet above sea level. It is operated by the US military, more specifically the Navy and Air Force. It operates between 2. 8 and 10 MHz. It was also voted one of the 10 most under reported news stories of the year by journalists. Scientific Perspectives HAARP is a...
    Free research essays on topics related to: jet stream, electromagnetic waves, lot of money, large amounts, evidence to support
  • Evidence To Support Lot Of Money
    1,325 words
    HAARPHAARP is an extremely low frequency radio wave generator. It stands for High Frequency Active Auroral Research Program. It is a massive antennae array up in Alaska on the Copper River Basin. It s altitude fluctuates between 1000 and 3000 feet above sea level. It is operated by the US military, more specifically the Navy and Air Force. It operates between 2. 8 and 10 MHz. It was also voted one of the 10 most under reported news stories of the year by journalists. Scientific Perspectives- HAA...
    Free research essays on topics related to: lot of money, electromagnetic waves, evidence to support, jet stream, large amounts
  • Radio Waves Radio Frequency
    584 words
    Radio 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...
    Free research essays on topics related to: radio frequency, frequency, high frequency, waves, radio waves
  • Primary And Secondary Magnetic Field
    1,373 words
    PES Physics Information Search A Tesla coil is a device that produces a high-frequency, high voltage current. When working at such high frequencies it can generate spectacular lightning-like discharges in to the air. The most popular use for the Tesla coils has been in the film industry, where they are used whenever lightning or electrical arcs are required. Scaled down versions of the tesla coil are also used in television sets. The Tesla coil was invented over 100 years ago. By Nikola Tesla. (...
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