The first speaker ever created was known as the dynamic loudspeaker. It was created in the 1920’s by Edward Kellogg and Chester Rice. The loudspeaker produces a magnetic field which then causes a coil or magnet to move. The coil or magnet is connected to the diaphragm. There are more speakers than just the horn‚ such as‚ such as‚ electrodynamic loudspeaker‚ flat panel - planar‚ electrostatic‚ multi-cell diaphragm and piezoelectric. Speakers are used to produce sound. Sound is an energy which is
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The Jazz Age Jazz. The style of music that just makes you want to dance. The blues‚ a kind of music that makes you want to cry. The 20’s were famous for great jazz and blues entertainers such as Louis Armstrong‚ Bessie Smith‚ and George Gershwin. The most famous of all though is Duke Ellington. Duke Ellington playing at the Cotton Club. The Duke as he is also known as is a Jazz legend. Ellington is a pianist‚ a composer and a bandleader. The Duke started playing professionally at the age of 17
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When we consider the act of influencing people to act against their own wills‚ it is natural to describe the physical. One may think of the gravity of a firearm‚ or of any threat of physical violence. While surely and realistically these concrete powers are involved in strong-arming another person or group of people‚ some of the most powerful forces at work do not exist as obviously as we expect them to. Although we may not been acutely aware of the very real‚ the ever-shifting‚ and the forceful
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Invention of the Car - Technology - 1920 In the 1920’s‚ the Henry Ford automobile became popular with the average family. It changed the lives of Americans and everyone that wanted a better form of transportation. The most appealing part of this automobile was the affordability for the average family. In the next few years‚ most families had a car or were getting ready to buy one. Ford cars became more and more popular. They were creating a group of cars made for mass production and selling. The
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As we have already hit the mental and physical aspects of the people. Now we walked into how they messed up the economy by their plan called “Buying on Margin.” Buying on margin was the engine for the stock market in the 1920’s. It helped fuel people to start investing and purchasing stocks. People felt this was some sort of cheat code to help solve their financial problems. To them it was like‚ figuring out how to time travel and erase World War I. It was known as a “Buy now‚ Pay later” concept
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Throughout the 1920s and ‘30s Urban populations augmented greatly in Cities (rather than living on farms)‚ affecting jobs‚ transportation‚ housing which have many positives effects during this time‚ but also many negative effects changing life during this time period. During the 1920s urbanization was becoming about impacting lives of many citizens and noncitizens living in America. For the first time more people were living in cities than farms‚ especially immigrants. When immigrants were coming
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bibliography to back up their resources and quotes throughout their writing and explanations on how those resources supports their paper. As well as the support throughout the essay‚ it explains how the crime rate in Chicago went up when prohibition in the 1920’s started and several different main events and people that caused the crime rate to increase. http://www.history.com/topics/roaring-twenties The roaring twenties article on this website shows the different aspects during the roaring twenties such
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The most important cultural battle fought in the 1920’s would have been the battle over the Prohibition. The Prohibition was the constitutional ban on the production‚ consumption‚ and sale of alcohol. This ban was put into place in 1920 and lasted for 13 years. At the core of this battle was whether to keep it around or to do away with it all together. There were several different groups on either side of this opposition each of which had their own agenda and reason for believing the way they did
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Working Toward Change The 72-year-old fight made by women lasting from 1848-1920 would over time result in the establishment of the Nineteenth Amendment to the United States Constitution declaring women’s suffrage and subconsciously empowered women that additional doors of opportunity would then too be opened. However prior to reaching the “golden” destination‚ women had a grueling journey filled with bountiful obstacles (such as laws‚ expectations‚ and stereotypes) that had to be overcome to reach
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HISTORY Why was there a boom in the USA in the 1920’s? There are many factors that contributed to America’s economic boom in the 1920’s. Resources where essential at this time in USA‚ this was because many new products and items were being produced for the consumer. Natural resources like coal; minerals‚ oil and land were in great store and were a great help as a basis for further expansion. The First World War was another factor as the USA supplied Europe with many goods during this
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