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Search results 3011 - 3020 of 12257 matching essays
- 3011: Radio: A Form of Communication
- ... up receiving equipment. The Electron Tube Further advancement of radio was made possible by the development of the electron tube. The diode, or valve, produced by Sir Ambrose Fleming in 1905, permitted the detection of high-frequency radio waves. In 1907, Lee De Forest invented the audion, or Triode, which was able to amplify radio and sound waves. Radiotelephone and Radiotelegraph Up through this time, radio communication was in the form ... by FM broadcast stations is 15 kHz at carrier frequencies between 88 and 108 MHz. This wider carrier frequency (15 kHz for FM as opposed to 5 kHz for standard AM broadcasts) accounts for the high fidelity of FM receivers. FM stations range in power from 100 watts to 100,000 watts. They cover distances of 24-105 km (15-65 mi) because government frequency allocations for commercial FM are in ... VHF range, unlike commercial AM. Television transmitters use AM for picture signals and FM for sound. The CW system described earlier is used in a modified FM form known as frequency shift keying (FSK) by high-speed teletype, facsimile, missile-guidance telemetry, and satellite communication. The carrier is shifted by amounts between 400 and 2,000 Hz. The shifts are made in a coded fashion and are decoded in the ...
- 3012: John Muir's Trail in History
- ... Glacier, Muir Point, and Muir Inlet all carry his name. However, it was California's Sierra Nevada and Yosemite Valley that truly claimed him. In 1868, he walked across the San Joaquin Valley through waist-high wildflowers and into the high country for the first time. Later he would write: "Then it seemed to me the Sierra should be called not the Nevada, or Snowy Range, but the Range of Light...the most divinely beautiful of ... composed of his travel journals. They recounted his travels, expounded his naturalist philosophy, and beckoned everyone to "climb the mountains and get their good tidings"(Muir, Life and Letters, 34). Muir's love of the high country gave his writings a spiritual quality. His readers, whether they be presidents, congressmen, or plain folks, were inspired and often moved to action by the enthusiasm of Muir's own unbounded love of ...
- 3013: Sports Therapy
- ... they get in a pressured dilemma, they can react quickly to the situation. Prior to the 1992 Olympics sports psychologists James Loehr, spent a considerable amount of time mentally preparing Jansen's mind to set high goals, so that he wouldn't repeat failure, as he experienced, in the last two Olympics. (Harry Hurt 1996, p.12) Psychological pressure has a major effect on athletes' performance and individual ability, rather than the physical state. Psychologist tries to set high standards for athletes to maintain poise and discipline. Athletes must make sacrifices, in witch they have to follow steps in order to complete these tasks: first, relax, and let your mind replace all the negative ... physical and mental performance. (Harry Hurt, 1996 p.12) Second, athletes who meet as a challenge create a rush of adrenaline and sugar inside their body. According to medical sources this is called a natural high, which is responsible for athletes exceeding in their performance. Additionally, James Loehr believed that, the findings mentioned above are difficult to perform, but players that develop self-discipline to commit themselves to do it ...
- 3014: Dresden, A City Lost
- ... the widespread destruction sustained during the war and was numbered among the most beautiful cities in the world, noted for its architecture and great art treasures. On the eve of February 13, 1945, phosphorus and high explosive bombs devastated the city. "Everyone was convinced, that there would be no attack here." (Owings, 191) Dresden was of no means a principal military point, furthermore, the majority of its inhabitants actually believed that ... originally a Slavic settlement called Drezdane conclusively devastated its inhabitants. When the waves of attacks arrived there was no escape. Over thirteen hundred British and U.S. bombers dropped more than three thousand tons of high explosive bombs and incendiaries which started a firestorm. Any living being caught outdoors was incinerated. Many of the people in cellars suffocated, then burned. Temperatures soared as high as one thousand eight hundred degrees Fahrenheit. Low flying planes machine-gunned the fleeing population along the banks of the Elbe River. The exact number of casualties will never be known. A total of ...
- 3015: Shakespeare
- ... was a glovemaker who owned a leather shop, and his mother was a farmer's daughter. William Shakespeare was one of eight children. His family was well off and he began attending the Stratford Grammar School at age seven. He went to school year round and attended school for nine hours a day. Though Shakespeare spent long hours at school, his life was fascinating. He lived in an exciting town with many pageants, shows and fairs. He also spent much time outside ...
- 3016: Educational Psychology
- ... more than administer mental tests, which started with the Stanford-Binet test (IQ test). Today, the science has been expanded to include counseling students, teachers, administrators, and parents, in an effort to help make the school environment one which is most effective in promoting learning. As an example, if a student in school commits a disciplinary action, instead of being indiscriminately punished, that student would be sent to see the school psychologist to find out the causes of the students misbehavior and deal with them accordingly (Frandsen 92). Though studies of educational surveys, there were nine major factors that increased learning. These nine factors can ...
- 3017: How Guns Work
- ... the hammer hits the firing pin. The firing pin then hits the primer which causes the powder to burn hence producing lots of gases. This causes the volume behind the bullet to fill with extremely high pressure gas. The gas pushes on every surface it encounters, including the bullet in front of it and the base of the gun barrel behind it. The increase in pressure caused by the gases causes the bullet to be forced into the barrel hence causing the bullet to come out the muzzle at very high speeds. Once the bullet is fired, it remains in motion from its momentum. The momentum will carry the bullet until it strikes an object or gravity pulls the bullet towards the earth. Firearms change potential ... people do not realise that the force imparted by accelerating the bullet is not the only force acting on the gun, or the shooter. Grains of burned gun powder are sent out the muzzle at high velocity. When the trigger is pulled, the hammer strikes a small charge at the end of the shell, the ammunition. This charge ignites black gun powder packed behind the lead ball bearings. When the ...
- 3018: The Cultural Gap In Joy Luck Club
- ... where he felt torn between two cultures. Wong's parents came to America in 1974. For the first couple of years, they lived a life not exposing themselves to the American culture. Once Wong started school, his surrounding influenced him, as in his friends who spoke "perfect" English and his teachers who taught and exposed him to the American culture. "It was like I was bringing home the American culture to my parents everytime I learned something new in school," Wong recalls. "I remember bringing home the first permission slip to go on a field trip when I was in kindergarten. My parents couldn't get over the fact that field trips existed. They thought going to school meant staying at school and not leaving the playground. They weren't too happy about letting me go until my teacher explained to them that the field trip would be educational." Differing cultural values ...
- 3019: Julius Caesar - Tragic Hero
- ... with some good traits. Also, the tragic hero must not deserve what mighty punishment is dealt to him. Another key feature of a tragic hero is the fact that a tragic hero must be a high-standing individual in society. The tragic hero must not deserve his punishment for the play to be a tragedy. Also, a tragedy happening to someone in high authority, will affect not only the single person but also society as a whole. Another reason for the tragic hero to be in high authority is to display that if a tragedy may happen to someone such as a king, it may just as easily happen to any other person. Julius Caesar fits the role of a tragic ...
- 3020: Paper About New Product, Bount
- ... Never before has such attributes of durability and effectiveness been used in a toilet paper brand, therefore P&G hopes to establish Bounty Toilet Paper as a leader in the industry. Proctor & Gamble understands the high competition that already exists in the toilet paper industry, but feel that new Bounty Toilet Paper will change how this industry is geared. In recent times, toilet paper producers have stressed comfort and style in ... the power of a lot of toilet paper, not a lot of toilet paper. Because of the already established name of Bounty in the paper towel world, the expectations of Bounty Toilet Paper will be high, with the product delivering satisfaction to all consumers. This is due in part to the success built into construction and usage of Bounty Paper Towels that will easily be catered into the toilet paper industry ... involvement in their decision to purchase Bounty Toilet Paper. We know as marketers that the price of a product relative to quality is extremely important in retaining customers and hopefully getting referred for such a high quality product. We know the price of an item has a direct correlation with the level of involvement or importance that a consumer will experience upon their decision to buy. We plan to offer ...
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