Slavery in Brazil

Edmund Burke, the acclaimed author and philosopher once said, â€Å"Slavery is a weed that grows on every soil. † Between the 16th and 19th century in the Americas, millions on millions of slaves were brought to the New World. There purpose was to work. The economy of most European colonies in America was dependent on slaves. The land that was discovered in Americas was useless with out sufficient slave labor to exploit it. In this essay, I will focus on two nations where slavery played an enormous role in the development of that country. First, The United States, where in 1860 in South Carolina over 50 percent of the population were slaves.Next, Brazil, the nation where about one third of all salves from Africa were brought. In this essay I will compare slavery in The United States to slavery in Brazil, I will dissect the similarities and differences while focusing on why and how the slaves came, the demographic and religious aspects, the treatment of the slaves, and the afte rmath on both countries due to slavery. Around the year 1530 the Portuguese came to Brazil in search of land and natural resources, specifically sugar. As the Portuguese and the indigenous people of Brazil battled for land, the Brazilians resisted against being enslaved.As the Portuguese presence grew in Brazil so did disease, causing the death of most of the working indigenous people. As the number of sugar plantations grew, the demand for workers did as well. This is the main reason why Brazil began to import slaves from Africa. Although the origin of slaves in The United States was similar to Brazil, there were some differences. In the year 1619, only around 10 years after the British began to colonize US, a Dutch slave trader exchanged about 20 Africans for food in Jamestown, Virginia. Like Brazil, the U. S needed workers for plantations, but while Brazil focused on the sugar plantations, the U.S was focused on the tobacco plantations. In general, both Brazil and the U. S lacked a major resource in order to maintain a strong economy, that resource being workers. Although Brazil used more slaves towards sugar and the U. S used more towards tobacco, in general the slaves worked in mines or they worked in a sugar, rice, tobacco, or cotton plantation. Although the U. S played a larger role in the process, both Brazil and the U. S participated in the Triangular Slave Trade. Some say the Triangular Slave Trade is the reason why 10 to 15 million of Africans were shipped to the Americas between 1650 and 1860.The slave trade was simple yet wrong on so many levels. The slave trade took several different routes, but there were two popular ones. The most common route would first start in Europe where the Europeans would trade manufactured goods for slaves in Africa. Next, the slaves were transported across the Atlantic Ocean to Brazil and the Caribbean where the slaves were sold for huge profits or traded for sugar, coffee, and tobacco. The journey from Africa to the Americas was known as the middle passage. Olaudah Equiano was a slave captured and sold into slavery.In his book, The Life of Olaudah Equiano the African, when describing the middle passage he writes, â€Å"I was soon put down under the decks, and there I received such a greeting in my nostrils as I had never experienced in my life; I became so sick and low that I was not able to eat. I now wished for the last friend, death, to relieve me; but soon, to my grief, two of the white men offered me eatables; and, on my refusing to eat, one of them held me fast by the hands, and laid me across, The white people looked and acted, as I thought, in so savage a manner; for I had never seen among my people such instances of brutal cruelty.The closeness of the place, and the heat of the climate, almost suffocated us. The air soon became unfit for respiration, from a variety of loathsome smells, and brought on a sickness among the slaves, of which many died. The shrieks of the women, and the gr oans of the dying, rendered the whole a scene of horror almost inconceivable. As you can tell, the conditions were brutal to say the least. Another popular triangular route taken was ships from the U. S colonies would take rum and other products to Africa in exchange for Slaves.From there, the slaves were taken to Brazil and the Caribbean and sold for profit or sold for sugar and molasses to take back to the U. S where then the sugar and molasses was sold to rum makers. In general, the slave trade was horrific and inhumane, however, it is the reason that the U. S and Brazil were able to maintain a steady economy. Although there were many similarities between the Brazilian slaves and the U. S slaves, there were quite a few specific differences as well. One of the largest differences in slavery between Brazil and the U. S was demographic.Generally speaking, the Brazilian slaves were usually decreasing while the U. S slaves were usually increasing. This is due to several reasons. First , the Brazilians had a much lower proportion of female slaves compared to the U. S who had an equal sex ratio. In Brazil, due to the lack of female slaves, they had a much lower birth rate then the U. S did. Both the death rate and suicide rate was also higher in Brazil compared to the U. S. Due to the low birthrate and the high death rate, Brazil had trouble to maintain a population resulting in having to continuously import slaves.On the other hand, the average number of children born to an early 19th century U. S slave woman was 9. 2; this is twice as many as Brazil and the Caribbean. All these reasons are why Brazil had a much larger number of recent arrivals from Africa while the U. S had a predominately American slave born population. Also, this is why out of the millions and millions of Africans who were brought to the New World, over one-third landed in Brazil and between 60 and 70 percent ended up in Brazil or the sugar colonies of the Caribbean.According to Henry John Temp le, the well-known British Prime Minister of the 19th century, he suggests that there were about 3,000,000 slaves in Brazil in the 19th century. Although it is hard to know the exact number, most historians agree that it was around 3,000,000, which would be about forty percent of the whole population. On the other side, in 1860, the slaves in the U. S were only about 13 percent of the entire population. Generally speaking, in Brazil slaves worked on much larger plantations then in the U. S.Most Brazilian plantations held about 150 slaves per plantation. In the U. S, it was quite different. According to Carl Deglar, who wrote, Slavery in Brazil and the United States, he states, â€Å"Out of all the plantations in the U. S, more the half the slaves worked on units with 20 slaves or less. † In the U. S it would not be uncommon for the slaves to deal with their owners on a daily basis, while in Brazil some worked on plantations with hundreds and hundreds of other slaves where it would be rare to encounter your owner. When comparing Brazil and the U.S today, the demographic differences during the days of slavery is one of the main reasons why the two countries are so different One may think that since the slaves were brought to the U. S and Brazil for similar reasons then they all were treated the same, had the same rights, and were viewed the same. Although this is by no means entirely false, there are a few specific differences on how the slaves were treated in the US compared to how the slaves were treated in Brazil. Religion among the slaves was vital for some while non-existent for others. In the U.S, religion was discouraged for the slaves. The average white American slave owner thought there was no need to ever have a slave practice a religion. This could be due to the fact that nowhere in the Catholic Christian teachings does it say it’s acceptable to enslave and treat a fellow Christian as the owners were treating their slaves. In 1831, Virgi nia passed a law stating, â€Å"Slaves and free Negroes were forbidden to preach, exhort or teach in any prayer-meeting or other association for worship where slaves of different families are collected together on penalty of not more than thirty-nine lashes. In Brazil, the Christianity of a slave was viewed quite different. Some slave owners even viewed it as an essential for a slave to work on his farm. In some cases the slaves would even have to perform a religious ritual even before they stepped foot in Brazil. Instead of being viewed as complete property, the slaves in Brazil were given a chance to practice a religion, in particular, practice the teachings of the Catholic Church. The slaves that departed from Angola, Africa to Brazil were baptized before they got on board the ship.When they arrived in Brazil, the slaves were acknowledged as baptized and had to begin learning the prayers, doctrines, and functions of the Church. In Brazil, marriage was actually acceptable and val id. In 1711, the Constituicoes Primeiras of the Archbishopric of Bahia reaffirmed the legitimacy of marriages between slaves, and between free persons and slaves. According to the Constituicoes, masters could not prevent their slaves from marrying, nor could they separate them once they had wed. Although this may sound promising, it sounds better then it actually was.Most slave owners did not abide by the law that you could not separate a married slave. In general, they still viewed them more as property then people. According to Fernando Henrique Cardoso, the former president of Brazil, he states, â€Å"Of the 660,000 slaves in all of Brazil in 1875, who were 14 years or older, only about 1 out of 6 was recorded as married or widowed. † In terms of religion, it is true that the Brazilian slaves had more rights then the U. S slaves, but not by much. As you can see both the U.S and Brazilian slave owners were more determined on making profit by making the slaves strenuously wo rk then anything else. Although both Brazil and U. S slave owners had complete ownership and control over their slave, the way they treated them did differ between countries. Theoretically, both Brazil and the U. S had laws against murder, abuse, and over working the slave. The difference is, generally speaking, in Brazil some of those laws were carried out while in the U. S, it was rare to see anyone ever defend a slave. In the U. S, the slave owner acted as the judge and jury for any issue involving his slave.In Brazil, a slave had somewhat of a right to a jury. For instance, say a slave owner murdered his slave in the U. S. In most cases it would go unheard of, but even if it were taken to court, it would have been extremely rare if the owner were prosecuted for anything. Now, if a slave owner murdered his slave in Brazil, by law the court should have prosecuted the case as if the slave was a free man. Although it may sound that slavery in Brazil was a lot less harsh, in reality, this judicial approach in Brazil is what should have happened, but as you can guess, it rarely ever did.Henry Koster, a famous German author and film director, in his novel, Travels to Brazil, he states, â€Å"occasionally a cruel master was fined for maltreating his slaves but, I have never heard of a punishment having been carried farther then this trifling manner of correction. † Although by law, the Brazilians compared to the U. S had stricter laws protecting the slaves, when it comes down to the truth, in both countries the slave was viewed more as property then human, mistreating your slave was seen as mistreating your property. One of the biggest differences when comparing U.S slavery to Brazilian slavery concerns manumission. Manumission, meaning the act of freeing a slave, was undoubtedly less common in the U. S compared to Brazil. The number proportion of free slaves in Brazil compared to the number proportion to free slaves in the U. S proves that manumission was more frequent in Brazil. In 1818, for every one free African in Brazil, there were only three slaves. This ratio is compared to with that in the U. S in 1860, when for every one free African, there were eight slaves. By 1872, the number of free Africans in Brazil was more then double the amount that were still slaves.The numbers show that there’s indisputable evidence to prove that manumission was more frequent in Brazil. It is important to note that Brazilian slave owners were freeing the sick and the old more so then the U. S, however, the sick and the old simply would not have been capable to produce offspring in numbers to explain the large number of free Africans in Brazil. Marvin Harris, the famous American anthropologist, along with many other historians suggests another explanation to why there were such a higher percentage of free Africans in Brazil compared to The United States.As stated before, in Brazil in the late 19th century, the free Africans greatly outnumber ed the slaves. The big difference was that Brazil needed those free Africans in order to maintain their economy. The free black slaves in Brazil produced food, were craftsmen, and even slave catchers. They performed the tasks that slave labor was too hard to achieve and the whites thought they were too good to do. This was not the occurrence in The United States. First, the U. S was importing more food rather then growing it like Brazil did, and the food that was being produced in the U.S was produced by whites in the South and Northwest. Also, the U. S had enough white men to perform the tasks that the free Africans in Brazil were doing. Therefore, for the U. S there was no economic reason for the whites to turn towards manumission as Brazil did. It did not matter if you were a slave in Brazil, The United States, Caribbean, Central America, or anywhere else, something that they all had in common was the attempt to run and become a free man. Some succeeding, some did not. In Brazil, escaped slaves formed communities like the ones they were forced to leave in their homeland.These communities were called quilombos. Compared to the U. S, the slaves in Brazil had a greater and a better chance for escape. The number of escaped slaves, the number of revolts, and the size of the quilombos were all greater in Brazil. Although there were plenty of revolts and escapes in the US, generally speaking, there were fewer participants then Brazil. In most of The United States, the climate was to cold in the winter to survive on your own compared to Brazil where the climate was reasonable. Also, Brazil was full of forests to hide in compared to the U. S where the areas were policed heavier.The large quilomobs communities in Brazil may contribute to the fact that today, in Brazil the blacks are seen as Brazilians while in certain parts of The United States, the blacks are still seen as Africans. During the days of slavery, discrimination towards blacks was clearly brutal and rut hless. The horrific and saddest result of slavery in The United States is that race prejudice still exists today. I am not saying that blacks are thought of as they were in the 18th century, but in The United States today, especially in the South, there is still discrimination towards colored people.After slavery was abolished in The United States, by no mean did that make the whites and blacks have equal rights. Even after the abolition of slavery, a black man still could not vote, give testimony in court for a white man, marry white women, hold office, and many other terrible things. Brazil, on the other hand, as writer Herbert Alexander puts it, â€Å"the race problem had been allowed to solve itself. † For example, in the seventeenth century, one of the three main officers when the Brazilians fought the Dutch was Henrique Diaz, a black man.This is something you would have never saw in The United States. The United States and Brazil were one of the last nations to abolish slavery in all of the Americas. The Civil War, which lasted from 1861 to 1865, ended slavery in the United States. In 1888, due to international political pressure, Brazil being the last nation to do it in the Americas, finally abolished slavery. Unlike The United States, Brazil was able to abolish slavery with out catastrophic violence. In both Brazil and The United States, the horrific terror of slavery in the 16th to 19th century is something everyone would want to forget.However, during that time period slavery was the reason why both The United States and Brazil’s economies were both stable and on the rise. Overall, when looking into the history of slavery in both The United States and Brazil, although there are differences and similarities, the time period of slavery explains greatly to why present day life in both unique countries is what it is. Bibliography Alexander, Herbert B. â€Å"Brazilian and United States Slavery Compared. † – Wikisource, the Free Online Library. N. p. , 2 Feb. 2001. Web. 12 Dec. 2012. Bergad, Laird W.The Comparative Histories of Slavery in Brazil, Cuba, and the United States. Cambridge: Cambridge UP, 2007. Print. Brogan, Hugh. The Penguin History of the United States of America. London: Penguin, 2001. Print. Carmody, Padraig. â€Å"Unit Three: Studying Africa through the Humanities. † Exploring Africa. N. p. , 4 Nov. 2002. Web. 12 Dec. 2012. Carter, Tom. â€Å"Race and Slavery in America. † Opinion Forum RSS. N. p. , 28 Feb. 2009. Web. 12 Dec. 2012. Davis, David Brion. Inhuman Bondage: The Rise and Fall of Slavery in the New World. New York: Oxford UP, 2008. Print. Degler, Carl N.Slavery in Brazil and the United States: An Essay in Comparative History. 4th ed. Vol. 75. Washington, D. C.? : American Historical Association. , 1970. Print. â€Å"Differences In Slave Laws In Colonial Brazil And Colonial British North. † 123HelpMe. com. 10 Dec 2012 Dodson, Howard. â€Å"How Slavery Helped B uild a World Economy. † National Geographic. N. p. , 3 Feb. 2003. Web. 12 Dec. 2012. Equiano, Olaudah, and Shelly Eversley. The Interesting Narrative of the Life of Olaudah Equiano, Or, Gustavus Vassa, the African. New York: Modern Library, 2004. Print. Foner, Eric. Give Me Liberty! An American History. New York: W. W. Norton &, 2008. Print. Gomez, Flavio S. Africans and Slave Marriages in Eighteenth-century Rio De Janeiro. N. p. : Sheridan, n. d. Print. Koster, Henry. Travels to Brazil. New York: Kessinger, 2012. Print. Mattoso, Katia MAE. To Be a Slave in Brazil, 1550-1888. New Brunswick, NJ: Rutgers UP, 1986. Print. Mintz, Sean. â€Å"American Slavery in Comparative Perspective. † Digital History Copyright. Mintz S and McNeil S, 3 Jan. 2003. Web. 12 Dec. 2012. Paine, Thomas. â€Å"African Slavery in America. † Pennsylvania Journal and the Weekly Advertiser. Philadelphia] 14 Apr. 1775: n. pag. Print. Reis, Joao Jose. Slave Rebellion in Brazil: The Muslim Uprisi ng of 1835 in Bahia. Baltimore: Johns Hopkins UP, 1995. Print. Tony, Dunnel. â€Å"History of African Slavery in Brazil. † Suite101. com. The University of Nottingham, 8 Sept. 2009. Web. 12 Dec. 2012. ——————————————– [ 1 ]. Laird W Bergad. The Comparative Histories of Slavery in Brazil, Cuba, and the United States. Print. 115-120 [ 2 ]. Herbert B. Alexander â€Å"Brazilian and United States Slavery Compared. † Web. 12 Dec. 2012. [ 3 ]. Olaudah Equiano.The Interesting Narrative of the Life of Olaudah Equiano. Print. 35 [ 4 ]. Sean Mintz. â€Å"American Slavery in Comparative Perspective. † Web. 12 Dec. 2012. [ 5 ]. Laird W Bergad. The Comparative Histories of Slavery in Brazil, Cuba, and the United States. Print. 115-120 [ 6 ]. Jose Joao Reis. Slave Rebellion in Brazil: The Uprising of 1835 in Bahia. Print. 8 [ 7 ]. Laird W Bergad. The Comparative Histories of Slavery in Brazil, Cuba, and the United States. Print. 117 [ 8 ]. Carl N. Degler. Slavery in Brazil and the United States: An Essay in Comparative History. Print. 006 [ 9 ]. Herbert B. Alexander â€Å"Brazilian and United States Slavery Compared. † Web. 12 Dec. 2012. [ 10 ]. Flavio S. Gomez. Africans and Slave Marriages in Eighteenth-century Rio De Janeiro. Print. 42-50 [ 11 ]. Carl N. Degler. Slavery in Brazil and the United States: An Essay in Comparative History. Print. 1009 [ 12 ]. Henry Koster. Travels to Brazil. Print. 77 [ 13 ]. Carl N. Degler. Slavery in Brazil and the United States: An Essay in Comparative History. Print. 1012 [ 14 ]. Herbert B. Alexander â€Å"Brazilian and United States Slavery Compared. † Web. 12 Dec. 2012.

Mobile Phones Essay

â€Å"Cell Phone† redirects here. For the film, see Cell Phone (film). For the Handphone film, see Handphone (film). The Qualcomm QCP-2700, a mid-1990s candybar style phone, and an iPhone 5, a current production smartphone. A mobile phone is a device that can make and receive telephone calls over aradio link while moving around a wide geographic area. It does so by connecting to a cellular network provided by a mobile phone operator, allowing access to the public telephone network. By contrast, a cordless telephone is used only within the short range of a single, private base station. In addition to telephony, modern mobile phones also support a wide variety of other services such as text messaging, MMS, email, Internet access, short-range wireless communications, business applications, gaming and photography. Mobile phones that offer these and more general computing capabilities are referred to as smartphones. The first hand-held mobile phone was demonstrated by John F. Mitchell[1][2][3] and Dr Martin Cooper of Motorola in 1973, using a handset weighing around 2.2 pounds (1 kg).[4] In 1983, the DynaTAC 8000x was the first to be commercially available. From 1990 to 2011, worldwide mobile phone subscriptions grew from 12.4 million to over 6 billion, penetrating about 87% of the global population and reaching the bottom of the economic pyramid. ————————————————- History Main article: History of mobile phones An evolution of mobile phones Before the devices that are now referred to as mobile phones existed, there were some precursors. The development of mobile telephony began in 1918 with tests of wireless telephony on military trains between Berlin – Zossen.[9] In 1924 public trials started with telephone connection on trains between Berlin – Hamburg.[9] In 1925 Zugtelephonie A. G. is founded to supply train telephony equipment[9] and in 1926 telephone service in trains of theDeutsche Reichsbahn and imperial post on the route between Hamburg and Berlin is approved and used.[9] This phone service was only offered to 1st class travelers, but in 1918, some 5 years after the invention of Meissnerischen tube based transmitters, the German Reichsbahn in Berlin led experiments with telephony via radio. [10] The first mobile telephone calls were made from automobiles in 1946. The Bell System’s – Mobile Telephone Service – inaugural call was made on 17 June of that year in St. Louis, Missouri, followed by Illinois Bell Telephone Company’s car radiotelephone service in Chicago on 2 October. [11] The MTS phones were composed of vacuum tubes and relays, and weighed over 80 pounds (36 kg).[12][13] There were initially only 3 channels for all the users in the metropolitan area, increasing later to 32 channels across 3 bands. This service continued into the 1980s in large portions of North America. Due to the small number of radio frequencies available, the service quickly reached capacity. In 1956, the world’s first partly automatic car phone system, Mobile System A (MTA), was introduced in Sweden. John F. Mitchell, Motorola’s chief of portable communication products in 1973, played a key role in advancing the development of handheld mobile telephone equipment. Mitchell successfully pushed Motorola to develop wireless communication products that would be small enough to use anywhere and participated in the design of the cellular phone.[14][15] Martin Cooper, a Motorola researcher and executive, was the key researcher on Mitchell’steam that developed the first hand-held mobile telephone for use on a cellular network.[16] Using a somewhat heavy portable handset, Cooper made the first call on a handheld mobile phone on 3 April 1973 to his rival, Dr. Joel S. Engel of Bell Labs.[17][18] As I walked down the street while talking on the phone, sophisticated New Yorkers gaped at the sight of someone actually moving around while making a phone call. Remember that in 1973, there weren’t cordless telephones or cellular phones. I made numerous calls, including one where I crossed the street while talking to a New York radio reporter – probably one of the more dangerous things I have ever done in my life. —Martin Cooper, [19] The new invention sold for $3,995 and weighed two pounds, leading to the nickname â€Å"the brick†. The world’s first commercial automated cellular network was launched in Japan by NTT in 1979, initially in the metropolitan area of Tokyo. In 1981, this was followed by the simultaneous launch of the Nordic Mobile Telephone (NMT) system in Denmark, Finland, Norway and Sweden.[20] Several countries then followed in the early to mid-1980s including the UK, Mexico and Canada. On 6 March 1983, the DynaTAc mobile phone launched on the first US 1G network by Ameritech. It cost $100m to develop, and took over a decade to reach the market.[21] The phone had a talk time of just half an hour and took ten hours to charge. Consumer demand was strong despite the battery life, weight, and low talk time, and waiting lists were in the thousands.[22][23] In 1991, the second generation (2G) cellular technology was launched in Finland by Radiolinja on the GSM standard, which sparked competition in the sector as the new operators challenged the incumbent 1G network operators. Ten years later, in 2001, the third generation (3G) was launched in Japan by NTT DoCoMo on the WCDMA standard.[24] This was followed by 3.5G, 3G+ or turbo 3G enhancements based on thehigh-speed packet access (HSPA) family, allowing UMTS networks to have higher data transfer speeds and capacity. By 2009, it had become clear that, at some point, 3G networks would be overwhelmed by the growth of bandwidth-intensive applications like streaming media.[25] Consequently, the industry began looking to data-optimized 4th-generation technologies, with the promise of speed improvements up to 10-fold over existing 3G technologies. The first two commercially available technologies billed as 4G were the WiMAX standard (offered in the U.S. by Sprint) and the LTE standard, first offered in Scandinavia by TeliaSonera. ————————————————- Read more:  Uses and Abuses of Mobile Phone Essay Features Main article: Mobile phone features See also: Smartphone A printed circuit board inside a Nokia 3210 All mobile phones have a number of features in common, but manufacturers also try to differentiate their own products by implementing additional functions to make them more attractive to consumers. This has led to great innovation in mobile phone development over the past 20 years. The common components found on all phones are: * A battery, providing the power source for the phone functions. * An input mechanism to allow the user to interact with the phone. The most common input mechanism is a keypad, but touch screens are also found in some high-end smartphones. * Basic mobile phone services to allow users to make calls and send text messages. * All GSM phones use a SIM card to allow an account to be swapped among devices. Some CDMA devices also have a similar card called a R-UIM. Individual GSM, WCDMA, iDEN and some satellite phone devices are uniquely identified by an International Mobile Equipment Identity (IMEI) number. Low-end mobile phones are often referred to as feature phones, and offer basic telephony. Handsets with more advanced computing ability through the use of native software applications became known as smartphones. Several phone series have been introduced to address a given market segment, such as the RIM BlackBerry focusing on enterprise/corporate customer email needs; the Sony-Ericsson ‘Walkman’ series of music/phones and ‘Cybershot’ series of camera/phones; the Nokia Nseries of multimedia phones, the Palm Pre the HTC Dream and the Apple iPhone. Text messaging Main article: SMS The most commonly used data application on mobile phones is SMS text messaging. The first SMS text message was sent from a computer to a mobile phone in 1992 in the UK, while the first person-to-person SMS from phone to phone was sent in Finland in 1993. The first mobile news service, delivered via SMS, was launched in Finland in 2000, and subsequently many organizations provided â€Å"on-demand† and â€Å"instant† news services by SMS. SIM card Main articles: Subscriber Identity Module and Removable User Identity Module Typical mobile phone SIM card GSM feature phones require a small microchip called a Subscriber Identity Module or SIM Card, to function. The SIM card is approximately the size of a small postage stamp and is usually placed underneath the battery in the rear of the unit. The SIM securely stores the service-subscriber key (IMSI) and the Ki used to identify and authenticate the user of the mobile phone. The SIM card allows users to change phones by simply removing the SIM card from one mobile phone and inserting it into another mobile phone or broadband telephony device. The first SIM card was made in 1991 by Munich smart card maker Giesecke & Devrient for the Finnish wireless network operatorRadiolinja.[citation needed] In general Mobile phone subscribers per 100 inhabitants 1997–2007 A cellphone repair kiosk in Mumbai, India Mobile phones are used for a variety of purposes, including keeping in touch with family members, conducting business, and having access to a telephone in the event of an emergency. Some people carry more than one cell phone for different purposes, such as for business and personal use. Multiple SIM cards may also be used to take advantage of the benefits of different calling plans—a particular plan might provide cheaper local calls, long-distance calls, international calls, or roaming. The mobile phone has also been used in a variety of diverse contexts in society, for example: * A study by Motorola found that one in ten cell phone subscribers have a second phone that often is kept secret from other family members. These phones may be used to engage in activities including extramarital affairs or clandestine business dealings.[38] * Some organizations assist victims of domestic violence by providing mobile phones for use in emergencies. They are often refurbished phones.[39] * The advent of widespread text messaging has resulted in the cell phone novel; the first literary genre to emerge from the cellular age via text messaging to a website that collects the novels as a whole.[40] * Mobile telephony also facilitates activism and public journalism being explored by Reuters and Yahoo![41] and small independent news companies such as Jasmine New in Sri Lanka. * The United Nations reported that mobile phones have spread faster than any other technology and can improve the livelihood of the poorest people in developing countries by providing access to information in places where landlines or the Internet are not available, especially in the least developed countries. Use of mobile phones also spawns a wealth of micro-enterprises, by providing work, such as selling airtime on the streets and repairing or refurbishing handsets.[42] * In Mali and other African countries, people used to travel from village to village to let friends and relatives know about weddings, births and other events, which are now avoided within mobile phone coverage areas, which is usually greater than land line penetration. * The TV industry has recently started using mobile phones to drive live TV viewing through mobile apps, advertising, social tv, and mobile TV.[43] 86% of Americans use their mobile phone while watching TV. * In parts of the world, mobile phone sharing is common. It is prevalent in urban India, as families and groups of friends often share one or more mobiles among their members. There are obvious economic benefits, but often familial customs and traditional gender roles play a part.[44] It is common for a village to have access to only one mobile phone, perhaps owned by a teacher or missionary, but available to all members of the village for necessary calls.[45] While driving Main article: Mobile phones and driving safety Texting in stop-and-go traffic in New York City Mobile phone use while driving is common but controversial. Being distracted while operating a motor vehicle has been shown to increase the risk of accident. Because of this, many jurisdictions prohibit the use of mobile phones while driving. Egypt, Israel, Japan, Portugal and Singapore ban both handheld and hands-free use of a mobile phone; others —including the UK, France, and many U.S. states—ban handheld phone use only, allowing hands-free use. Due to the increasing complexity of mobile phones, they are often more like mobile computers in their available uses. This has introduced additional difficulties for law enforcement officials in distinguishing one usage from another as drivers use their devices. This is more apparent in those countries which ban both handheld and hands-free usage, rather than those who have banned handheld use only, as officials cannot easily tell which function of the mobile phone is being used simply by looking at the driver. This can lead to drivers being stopped for using their device illegally on a phone call when, in fact, they were using the device for a legal purpose such as the phone’s incorporated controls for car stereo or satnav. A recently published study has reviewed the incidence of mobile phone use while cycling and its effects on behaviour and safety.[48] In schools Some schools limit or restrict the use of mobile phones. Schools have set restrictions because of the use of cell phones for cheating on tests, harassment and bullying, threats to the school’s security, distraction of students, and the facilitating of gossip and other social activity at school. Many mobile phones are banned in school locker room facilities, public restrooms and swimming pools due to the built-in cameras that most phones now feature. Mobile banking and payments Main articles: Mobile banking and Mobile payment See also: Branchless banking and Contactless payment In many countries, mobile phones are used to provide mobile banking services, which may include the ability to transfer cash payments by secure SMS text message. Kenya’s M-PESA mobile banking service, for example, allows customers of the mobile phone operator Safaricom to hold cash balances which are recorded on their SIM cards. Cash may be deposited or withdrawn from M-PESA accounts at Safaricom retail outlets located throughout the country, and may be transferred electronically from person to person as well as used to pay bills to companies. Branchless banking has also been successful in South Africa and Philippines. A pilot project in Bali was launched in 2011 by the International Finance Corporation and an Indonesian bank Bank Mandiri.[49] Another application of mobile banking technology is Zidisha, a US-based nonprofit microlending platform that allows residents of developing countries to raise small business loans from web users worldwide. Zidisha uses mobile banking for loan disbursements and repayments, transferring funds from lenders in the United States to the borrowers in rural Africa using the internet and mobile phones.[50] Mobile payments were first trialled in Finland in 1998 when two Coca-Cola vending machines in Espoo were enabled to work with SMS payments. Eventually, the idea spread and in 1999 the Philippines launched the first commercial mobile payments systems, on the mobile operators Globe and Smart. Some mobile phone can make mobile payments via direct mobile billing schemes or through contactless payments if the phone and point of sale support near field communication (NFC).[51] This requires the co-operation of manufacturers, network operators and retail merchants to enable contactless payments through NFC-equipped mobile phones.[52][53][54] Tracking and privacy See also: Mobile phone tracking Mobile phones are also commonly used to collect location data. While the phone is turned on, the geographical location of a mobile phone can be determined easily (whether it is being used or not), using a technique known as multilateration to calculate the differences in time for a signal to travel from the cell phone to each of several cell towers near the owner of the phone. The movements of a mobile phone user can be tracked by their service provider and, if desired, by law enforcement agencies and their government. Both the SIM card and the handset can be tracked.[55] China has proposed using this technology to track commuting patterns of Beijing city residents.[57] In the UK and US, law enforcement and intelligence services use mobiles to perform surveillance. They possess technology to activate the microphones in cell phones remotely in order to listen to conversations that take place near the phone. [58][59] Thefts According to the Federal Communications Commission, one out of three robberies involved the theft of a cellular phone. Police data in San Francisco showed that one-half of all robberies in 2012 were thefts of cellular phones. An online petition on Change.org called Secure our Smartphones urged smartphone manuacturers to install kill switches in their devices to make them unusable in case of theft. The petition is part of a joint effort by New York Attorney General Eric Schneiderman and San Francisco District Attorney George Gascon and was directed to the CEOs of the major smartphone manufacturers and telecommunication carriers. [60] On Monday, June 10, 2013, Apple announced it would install a kill switch on its next iPhone operating system, due to debut in October 2013. [61] ————————————————- Health effects Main article: Mobile phone radiation and health Further information: Mobile phones on aircraft The effect mobile phone radiation has on human health is the subject of recent interest and study, as a result of the enormous increase in mobile phone usage throughout the world. Mobile phones use electromagnetic radiation in the microwave range, which some believe may be harmful to human health. A large body of research exists, both epidemiological and experimental, innon-human animals and in humans, of which the majority shows no definite causative relationship between exposure to mobile phones and harmful biological effects in humans. This is often paraphrased simply as the balance of evidence showing no harm to humans from mobile phones, although a significant number of individual studies do suggest such a relationship, or are inconclusive. Other digital wireless systems, such as data communication networks, produce similar radiation. On 31 May 2011, the World Health Organization stated that mobile phone use may possibly represent a long-term health risk,[62][63] classifying mobile phone radiation as â€Å"possibly carcinogenic to humans† after a team of scientists reviewed studies on cell phone safety.[64] Mobile phones are in category 2B, which ranks it alongside Coffee and other possibly carcinogenic substances.[65][66] At least some recent studies have found an association between cell phone use and certain kinds of brain and salivary gland tumors. Lennart Hardell and other authors of a 2009 meta-analysis of 11 studies from peer-reviewed journals concluded that cell phone usage for at least ten years â€Å"approximately doubles the risk of being diagnosed with a brain tumor on the same (‘ipsilateral’) side of the head as that preferred for cell phone use.† [67] One study of past cell phone use cited in the report showed a â€Å"40% increased risk for gliomas (brain cancer) in the highest category of heavy users (reported average: 30 minutes per day over a 10†year period).†[68] This is a reversal from their prior position that cancer was unlikely to be caused by cellular phones or their base stations and that reviews had found no convincing evidence for other health effects.[63][69] Certain countries, including France, have warned against the use of cell phones especially by minors due to health risk uncertainties.[70] However, a study published 24 March 2012 in the British Medical Journal questioned these estimates, because the increase in brain cancers has not paralleled the increase in mobile phone use. Dis-advantages : * Some people (especially teens) get so much addicted to cell phones for talking, video, messaging, games, etc that they forget the real purpose of the phone and waste large part of their time in unnecessary interaction over their cell phones. * Nothing more can be a distraction for a teached in the classroom, when a student’s phone rings. Cell phones are increasingly becoming a problem for the schools during classroom hours and are becoming a means of cheating during examinations and other kinds of ability tests. All this is really bad and does hurt the future of the student, who doesn’t realize that he/she is him/her-self responsible for it. * Health of those living in the vicinity of cell phone towers is becoming a growing concern. Towers result into an area with concrete development along with destruction of natural features (vegetation etc) around the place. The towers also emit strong electromagnetic signals, which can be health hazard for those living nearby and who are getting exposed to strong radiations continuously during a good span of their lives. * While remaining in touch is good thing but sometimes it becomes annoying to have to deal with continuous incoming phone calls. You are on a vacation and your boss calls up, how does that sound! * Cell phone monthly bills are usually more than a landline bill. Sometimes, we may not require to have a cell phone but we still buy one and start paying monthly bills; so it increases our monthly/recurring expenses. * Use of hands-free (wired/blue-tooth) can at times pass on loud sounds to our ears which can result in weakening of ear-drums. Nowadays, one can download lot’s of songs, so keeping the hands-free glued inside your ears for long hours can really affect the sensitivity of ears in the long run of life. * There have been cases of cell phone blasts, due to the excessive heating up of it’s battery. This can be a fatal issue; although rare. * No joke, the surface of a cell phone has millions of bacteria and virus on it and that can be a strong reason of immediate skin p roblem on face or can result into other internal infections wherein the microbes creep inside the body through mouth or other openings. * Some use the keypad excessively; due to size restrictions the buttons and keypad of the cell phone are not natural for human hands; so excessive and prolonged typing can be an issue for fingers and finger joints. * The continuous exposure of signal to and from our cell phone can be a cancer concern, although to a meagre amount- research is still going on. However, the mobile phone industry has long resisted any suggestion of a link to cancer, though it accepts that mobile phone radiation does affect the electrical activity in the brain. * The battery parts and other electonic parts of a cell phone can be environmental hazard if not disposed off properly through approved means. * A cell phone can be helpful while driving and talking in case of urgent matters but increasingly it is becoming cause of accidents because it deviates the attention of a driver; human brain can do only one thing at a time (however small span of time it may be). * It can be a big time distraction and nuisance in calm and silent places like libraries, cinemas, restaruants, etc. Some cell phone users lose the sense of deciding when and where they can talk on the cell phone and where they can’t, without slightest consideration for the fellow beings around. * The mobile phone advertisements through messages are becoming a pain for the cell phone users. * Your SIM can be exploited as tracking device and if you’re an important person then that can be a big concern for you. Advantages : * The more you talk, the more you know how to talk and the better your communication skills become. This is applicable if you’re a sensible person and keep note of your interacting habits over the phone. It can be a communication tutorial! * Nothing more than a cell phone comes to great help in emergency. You are driving by the freeway and the vehicle jams and cell phone comes to your rescue. You are stuck in a lone place, again call somebody and ask for directions. * Parents can be a little less worried about their kids by being in constant touch with them. * If you’re a net-savvy, you can have Internet handy all the time and anywhere the signal of your cell phone provider can reach. * Trendy and stylish cell phones can be used as a bait to receive attention. It can be part of fashion and styling. * From the industy and economy point of view, cell phone companies (communication industry) is flourishing with market capital in billions. This is a good thing for the economy to be smooth and healthy. * Companies find it yet another medium to advertise their products; so another medium to reach the consumers. * Nowadays, cell phones are not just phone calls; they’re about messaging, video, songs, games, alarm clock, notes, calendar, reminder, etc. So one equipment, lots’ of uses! * Although cell phone use can be dangerous while driving but sometimes it can be a time-saver – you are driving and simultaneously discussing some urgent matter as well. A sensible and only urgent usage during driving can be a great help at times.

Acid in Soda

Each soda was titrated using one of the two experimental methods. These methods are the traditional titration and the modern titration. Carbonic acid was already removed from the soda by boiling it. Both of the two different titration methods use the same basic set up. Firstly, the buret must be cleaned thoroughly with tap water. While cleaning the buret, it is also checked to make sure there are no leaks. The ring stand is then set up with a buret clamp and the cleaned buret placed in it. Then the buret is filled with 5-10mL of sodium hydroxide, M . 0466 NaOH, three times and emptied after each time to completely rinse the buret. The buret is now filled will NaOH until it reads at the 0. 00mL mark on the buret. The initial volume of NaOH in the buret is then recorded into lab books for future reference. The soda must now be readied for titration. Both sodas require the same set up. The correct amount of soda, depending on which titration, is poured into a 100mL graduated cylinder. This measurement had to be within 5% deviation of the given value to be legitimate. Next, after the initial volume of the soda was recorded for future calculations, distilled water was added up to the 100mL mark on the cylinder. The mixed solution was then put into a 250 mL Erlenmeyer flask. That is as far as the similarities between the two titration methods go. In order to prepare the first soda for the traditional titration, five drops of phenolphthalein dye are added to the soda water solution in the flask. Next, the tip of the buret was placed over top of the soda solution. NaOH solution was added at approximately 2mL increments. The dye will create a pink color that disappears when mixed. When the titration did not disappear, NaOH was no longer added. The final volume of NaOH in the buret was recorded. 4mL was then subtracted from this number and the number received from that was the volume of NaOH that was quickly added each time for a more accurate titration. Another trial was then prepared by refilling the buret to 0. 00mL and the flask was rinsed out. A new soda solution was added to the flask by following the previous instructions. This time the volume of NaOH that could be quickly added was added to the soda solution. After this volume was added, drops of NaOH were then added to the solution continuously until the solution once again remained pink. The volume of NaOH was recorded in the notebook. This procedure for the traditional and accurate titration was repeated three additional times for a total of four accurate titrations. All data was recorded. The ratio of NaOH to citric acid was then calculated in the notebook for each of the four accurate titrations. Using the volume of NaOH and the molarity of NaOH, the number of moles was found. Then using the stoichiometry of the reaction, the number of moles of citric acid was found for each trial. The mean and standard deviation was then calculated for the molarity of citric acid. The modern titration used a pH electrode and the LabQuest device to record accurate titrations. After the LabQuest device was set up correctly, the soda and the NaOH were prepared as in the traditional titration experiment except the soda was placed in a beaker instead of a flask. Using a utility clamp and a stand, the pH electrode was suspended just above the bottom of the beaker. Then the magnetic stir bar was added to stir the soda solution evenly. For these titrations the volume of the NaOH was entered into the LabQuest device during the titration. NaOH was added to the solution until the pH reached 6. 0. NaOH was then added very carefully, drops at a time, until the pH reached about 10. 0. During the titration, the volume of NaOH was entered into the LabQuest device every time the pH level raised 0. 2 pH. The device stores the entered data and records it on a chart. This process of titration was repeated two more times for a total of three accurate titrations. The data stored in the device was then transferred to a computer and saved. The charts and data collected can be found on the last page. The volume of NaOH used to reach the equivalence point was calculated for each of the three titrations. The equivalence point was found graphically. Using the volume of NaOH and the molarity of NaOH, the moles of NaOH were calculated. Using the volume of the soda used, the molarity of citric acid was found. Then the mean and standard deviation of the molarity of citric acid was calculated. Results: In the traditional titration, the recorded data is shown in the following chart: Table 1: Volume of soda| Volume of NaOH| RatioNaOH:soda| MolesNaOH| MolesCitric acid| MolarityCitric acid| Titration1| 40. 00mL| 19. 00mL| . 475| 8. 85* 10^-4| 2. 95* 10^-4| 7. 375*10^-3| Titration2| 40. 00mL| 19. 00mL| . 466| 8. 85* 10^-4| 2. 95* 10^-4| 7. 23*10^-3| Titration3| 40. 80mL| 19. 00mL| . 469| 8. 85* 10^-4| 2. 95* 10^-4| 7. 28*10^-3| Titration4| 40. 10mL| 19. 02mL | . 474| 8. 86* 10^-4| 2. 95* 10^-4| 7. 36*10^-3| From the data in Table 1, the mean and standard deviation was calculated for the molarity of citric acid: Mean molarity of citric acid: 7. 31*10^-3 Standard Deviation: 6. 837*10^-5 In the modern titration, the recorded data is shown for the three trials in the tables below: Table 2: Table 3:Table 4: The data in tables 2-4 was entered separately into three different graphs shown below: Graph 1: Trial 1 Graph 1b: Derivative of graph 1 shown Graph 2: Trail 2 Graph 3: Trial 3 From tables 2-4 and analyzing graphs 1-3, the volume of NaOH used to reach the Equivalence point was calculated. Trial 1: 11. 86mL Trial 2: 11. 28mL Trial 3: 11. 40mL Using the volume of NaOH and the concentration of NaOH (. 0466M) the molarity of NaOH was calculated to four significant figures: Trial 1: 5. 527*10^-4 Trial 2: 5. 257*10^-4 Trial 3: 5. 312*10^-4 Using the stoichiometry of the reaction between citric acid and sodium hydroxide, the moles of citric acid was found to four significant figures: Trial 1: 1. 842*10^-4 Trial 2: 1. 752*10^-4 Trial 3: 1. 771*10^-4 From the moles of citric acid, the molarity was then calculated to four significant figures: Trial 1: 9. 211*10^-3 Trial 2: 8. 761*10^-3 Trial 3: 8. 854*10^-3 The mean and standard deviation were then calculated for the moles of citric acid in the sample of soda used again to four significant figures: Mean: 8. 942*10^-3 Standard Deviation: 2. 376*10^-4 Acid in Soda Each soda was titrated using one of the two experimental methods. These methods are the traditional titration and the modern titration. Carbonic acid was already removed from the soda by boiling it. Both of the two different titration methods use the same basic set up. Firstly, the buret must be cleaned thoroughly with tap water. While cleaning the buret, it is also checked to make sure there are no leaks. The ring stand is then set up with a buret clamp and the cleaned buret placed in it. Then the buret is filled with 5-10mL of sodium hydroxide, M . 0466 NaOH, three times and emptied after each time to completely rinse the buret. The buret is now filled will NaOH until it reads at the 0. 00mL mark on the buret. The initial volume of NaOH in the buret is then recorded into lab books for future reference. The soda must now be readied for titration. Both sodas require the same set up. The correct amount of soda, depending on which titration, is poured into a 100mL graduated cylinder. This measurement had to be within 5% deviation of the given value to be legitimate. Next, after the initial volume of the soda was recorded for future calculations, distilled water was added up to the 100mL mark on the cylinder. The mixed solution was then put into a 250 mL Erlenmeyer flask. That is as far as the similarities between the two titration methods go. In order to prepare the first soda for the traditional titration, five drops of phenolphthalein dye are added to the soda water solution in the flask. Next, the tip of the buret was placed over top of the soda solution. NaOH solution was added at approximately 2mL increments. The dye will create a pink color that disappears when mixed. When the titration did not disappear, NaOH was no longer added. The final volume of NaOH in the buret was recorded. 4mL was then subtracted from this number and the number received from that was the volume of NaOH that was quickly added each time for a more accurate titration. Another trial was then prepared by refilling the buret to 0. 00mL and the flask was rinsed out. A new soda solution was added to the flask by following the previous instructions. This time the volume of NaOH that could be quickly added was added to the soda solution. After this volume was added, drops of NaOH were then added to the solution continuously until the solution once again remained pink. The volume of NaOH was recorded in the notebook. This procedure for the traditional and accurate titration was repeated three additional times for a total of four accurate titrations. All data was recorded. The ratio of NaOH to citric acid was then calculated in the notebook for each of the four accurate titrations. Using the volume of NaOH and the molarity of NaOH, the number of moles was found. Then using the stoichiometry of the reaction, the number of moles of citric acid was found for each trial. The mean and standard deviation was then calculated for the molarity of citric acid. The modern titration used a pH electrode and the LabQuest device to record accurate titrations. After the LabQuest device was set up correctly, the soda and the NaOH were prepared as in the traditional titration experiment except the soda was placed in a beaker instead of a flask. Using a utility clamp and a stand, the pH electrode was suspended just above the bottom of the beaker. Then the magnetic stir bar was added to stir the soda solution evenly. For these titrations the volume of the NaOH was entered into the LabQuest device during the titration. NaOH was added to the solution until the pH reached 6. 0. NaOH was then added very carefully, drops at a time, until the pH reached about 10. 0. During the titration, the volume of NaOH was entered into the LabQuest device every time the pH level raised 0. 2 pH. The device stores the entered data and records it on a chart. This process of titration was repeated two more times for a total of three accurate titrations. The data stored in the device was then transferred to a computer and saved. The charts and data collected can be found on the last page. The volume of NaOH used to reach the equivalence point was calculated for each of the three titrations. The equivalence point was found graphically. Using the volume of NaOH and the molarity of NaOH, the moles of NaOH were calculated. Using the volume of the soda used, the molarity of citric acid was found. Then the mean and standard deviation of the molarity of citric acid was calculated. Results: In the traditional titration, the recorded data is shown in the following chart: Table 1: Volume of soda| Volume of NaOH| RatioNaOH:soda| MolesNaOH| MolesCitric acid| MolarityCitric acid| Titration1| 40. 00mL| 19. 00mL| . 475| 8. 85* 10^-4| 2. 95* 10^-4| 7. 375*10^-3| Titration2| 40. 00mL| 19. 00mL| . 466| 8. 85* 10^-4| 2. 95* 10^-4| 7. 23*10^-3| Titration3| 40. 80mL| 19. 00mL| . 469| 8. 85* 10^-4| 2. 95* 10^-4| 7. 28*10^-3| Titration4| 40. 10mL| 19. 02mL | . 474| 8. 86* 10^-4| 2. 95* 10^-4| 7. 36*10^-3| From the data in Table 1, the mean and standard deviation was calculated for the molarity of citric acid: Mean molarity of citric acid: 7. 31*10^-3 Standard Deviation: 6. 837*10^-5 In the modern titration, the recorded data is shown for the three trials in the tables below: Table 2: Table 3:Table 4: The data in tables 2-4 was entered separately into three different graphs shown below: Graph 1: Trial 1 Graph 1b: Derivative of graph 1 shown Graph 2: Trail 2 Graph 3: Trial 3 From tables 2-4 and analyzing graphs 1-3, the volume of NaOH used to reach the Equivalence point was calculated. Trial 1: 11. 86mL Trial 2: 11. 28mL Trial 3: 11. 40mL Using the volume of NaOH and the concentration of NaOH (. 0466M) the molarity of NaOH was calculated to four significant figures: Trial 1: 5. 527*10^-4 Trial 2: 5. 257*10^-4 Trial 3: 5. 312*10^-4 Using the stoichiometry of the reaction between citric acid and sodium hydroxide, the moles of citric acid was found to four significant figures: Trial 1: 1. 842*10^-4 Trial 2: 1. 752*10^-4 Trial 3: 1. 771*10^-4 From the moles of citric acid, the molarity was then calculated to four significant figures: Trial 1: 9. 211*10^-3 Trial 2: 8. 761*10^-3 Trial 3: 8. 854*10^-3 The mean and standard deviation were then calculated for the moles of citric acid in the sample of soda used again to four significant figures: Mean: 8. 942*10^-3 Standard Deviation: 2. 376*10^-4

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