Mobile Phone Several examples of non-flip mobile phones‚ from the early 2000s. [pic] |Inventor |Martin Cooper | |Launch year |1973 | |Company |Motorola | |Available? |Worldwide | A mobile phone (also called mobile‚ cellphone or handphone) is an electronic device used for full duplex two-way radio telecommunications over a cellular network of base stations known
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I am thinking of adding ‘Mobile Phones and Privacy’. The last part of the series will provide actions you can take to reduce the health risks. All articles will be posted in the coming few weeks. A Short History – The exponential use of mobile phones Almost every adult has a mobile phone‚ and so do many children. Prof. Kenneth J. Rothman‚ one of the world’s leading epidemiologists‚ states the following: Within only a few years a substantial proportion of the world’s population has adopted a new
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INTRODUCTION A mobile phone also known as a cellular phone‚ cell phone and a hand phone is a device that can make and receive telephone calls over a radio link whilst 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
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1.What energy is converted into electrical energy from mobile phone batteries? Chemical energy is converted in to electrical energy from a mobile phone battery 2.What is sound energy from your voice converted to inside a mobile phone for transmission from the phone to a cell tower? The sound energy is first converted in to electrical energy by its batteries and then converted in to microwaves by the phones antenna and then it is sent to the nearest cell tower at a particular frequency. 3
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ACKNOWLEDGEMENT INTRODUCTION Mobile phones‚ also known as cell phones or wireless phones‚ are hand-held phones with built-in antennas. Unlike home phones‚ cell phones can be carried from place to place with a minimum of fuss. This makes them a good choice for people who want to be in touch with other people even when they are away from the house. Cell phones are a vast improvement over the telecommunications technology of the past‚ and have become a necessity of modern life. As always‚ communication
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HI‚ Nowadays mobile phones are literally invading our lives; from children to THE elderly‚ almost everybody owns one. Some people take their own device everywhere with them and cannot bear BEING without it. It has eventually become a common habit to be on the phone in every situation‚ no matter with whom you might be and in which occasion‚ your loyal “friend” is always with you‚ ready to ring and make you happy. This might in some extreme cases affect relationships WITH people‚ because it
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Advantages and Disadvantages of Mobile Phones Introduction With the rapid development of IT and information industry‚ mobile phones play a dominant role in towns people’s lives. This essay then goes on to discuss both the advantages and disadvantages of mobile phones. Body First of all‚ mobile phones are useful and convenient to human beings. People can communicate with others in an easier way than people did in the old days. In the past‚ without mobile phones‚ communications were too difficult
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our phones. Ever lose your phone for one moment and felt your heart jump out of your chest? This is what I am talking about. Most of us are addicted to our smartphones. If you want to know whether you are addicted to your smartphone‚ ask yourself these questions: Do you check your smartphone within an hour of waking up this morning? Do you check your smartphone at times without any reasons? Or do you check your smartphone the moment you receive a text message or email? Come on‚ don’t let your smartphone
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they have unknowingly become the slaves of technology. It has also helped to create convenience to the people. To date‚ many people are using their mobile phone as their personal digital assistant‚ one example is Smartphone. Smartphone is a combination of mobile phones and personal digital assistant. As a mobile phone‚ it can be used to make phone calls‚ update contact list‚ personal calendar and task list. With technology enhancements‚ its role as a personal digital assistant will help to create
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Why people nowadays prefer using mobile phone to using telephone ? Although many researches indicated that mobile phones have some bad influences on human‚ The number of people using mobile phones are increasing every year. First of all ‚ I’ll talk about the advantages of cell phone and how does it influence to our daily life . The most obvious advantages of mobile phone are that it can be mobilized. People can use mobile phones everywhere they want such as buses‚ companies‚ schools etc. Meanwhile
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