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Essay / The Evolution of Telephones - 946
Cell phones were not the communication tools they are today (Klotz). Born from the simplest technologies, phones have become more and more complex and are starting to have an effect on people. People are starting to think they need their phones (Argentina). Although many people own a phone, it may not be as good as you might think. The invention of the telephone began with Alexander Graham Bell. He opens a school for the deaf and has the idea of transporting speech through wires. It all started when he accidentally spilled acid on his clothes while testing circuits. He called his assistant and figured out that the receiver could send and receive voice messages using electricity (Willams). His phone relied on electromagnetism and electromagnetic induction. The voices of people talking on the telephone vibrate the air and the mechanical vibrations of the sound vibrate the diaphragm of the telephone transmitter (Pasachoff). Alexander fully developed the telephone system on February 14, 1876, and in 1877 the Bell Telephone Company was established. Less than a decade later, 150,000 Americans owned their own telephones (Williams). Phones have continued to evolve since their creation. In the 1990s, they were large and had long antennae. Throughout the decade, phones became sleeker with improved features and models with shortened antennas. Internal antennas were then invented, allowing phones to take up less space. While in the early 2000s, phones were no longer black and white; they incorporated color into their display (SV:SV). Outer screens on phones, cameras in phones, and larger inner screens have also been introduced. Although much progress has been made, there would...... middle of paper ......ne. “Mobile phones and children: take the precautionary route. » Pediatric nursing. March-Apr. 2013: 65+. Academic expanded as soon as possible. Internet. March 16, 2014.Anonymous. “Hit me on the cell phone.” School choices. March 1, 2002: 5. Electronic library. Web.March 13, 2014.Dees, Tim. “It’s not just phones anymore.” Law and order. August 1, 2003: 36.eLibrary. Internet. March 11, 2014. Cell Phones: Today and Tomorrow (2002). World Year of Book Science. 2009.eLibrary. Internet. March 4, 2014.Argentina, Cindy. “WINNING SCIENCE: Are cell phones addictive? » Odyssey. 01 Sep. 2011: 23. Electronic library. Internet. March 15, 2014. “American Adacemy of Sleep Medicine; Excessive cell phone use affects adolescents' sleep. Women's Health Weekly. June 26, 2008: 610. Electronic library. Internet. March 16, 2014. Pasachoff, Naomi. Alexander Graham Bell: Making Connections. New York: OxfordUniversity Press, Inc. 1996. Print.