BATTERIES What is a battery? A battery is a container consisting of one or more cells carrying an electric charge and used as a source of power. SECONDARY BATTERIES * rechargeable * high cost (short-term) low cost (long-term) * used in objects with high energy requirements: e.g. mobile phones‚ power tools * require special handling‚ containment & disposal * limited interchangeability * long life time * produce smaller amount of waste (flat discharge curve)
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awaken when Sir Stamford Raffles established the first botanical garden in 1822. [1] Through continuous planning and cultivation‚ Singapore has earned the name of "Garden City". From the first tree planting by Mr Lee Kuan Yew in 1963‚ Gardens by the bay (Gardens) is a huge leap with its $1 billion investment.[2]Aligned with Singapore’s new aspiration to become an international eco-tourism icon‚ Gardens is alleged to put Singapore at the forefront of eco-tourism and promote Singapore as a "City in the
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C ASE S TUDY The Pirate Bay: The World’s Most Resilient Copyright Infringer? The Pirate Bay (TPB)‚ a Swedish Web site (Piratebay.org)‚ is one of the world’s most popular pirated music and content sites‚ offering free access to millions of copyrighted songs and thousands of copyrighted Hollywood movies. In June 2011‚ The Pirate Bay reported that it had about 5 m illion r egistered u s ers‚ a nd 25 m illion n on-registered u sers ( so-called "free riders "). To p ut t hat n umber i n p
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Analysis of The Pirate Bay Case The Pirate Bay is a file sharing website based in Sweden that is comparable to other peer-to-peer (P2P) e-commerce sites like Napster and Kazaa. The company faces scrutiny but has avoided closure by modifying business practices and finding legal loopholes regarding copyright protection (Laudon & Traver‚ 2010). The case study "Internet Piracy: The Pirate Bay" analyzes the company and its place in the history of e-commerce‚ and reveals startling effects of P2P sites
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Guantanamo Bay is a prison area near Cuba and is controlled by the American Navy. After the September 11‚ 2001 terrorist attack in the US‚ the US forces picked up about 600 people from various parts of the world and imprisoned them in the Guantanamo Bay prison on charges of aiding or involvement in this terrorist attack. In most cases‚ the governments of the countries to which these prisoners belonged were neither informed or was permission taken. It was done in such secrecy that even the families
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Sometimes at night‚ when it is so dark the darkness becomes almost smothering‚ I lie awake listening to the cars outside and the endless barking of the dog next door. I think back through my life‚ to try and comfort me into restful sleep. I remember summers from my middle school days. The images yellowy‚ orange‚ warm‚ happy. Endless weeks abroad‚ the sun almost unbearable in its cruel sunburnt heat. A time when swimwear wasn’t a terrifying thought: flabby thighs‚ see-through bikinis were things
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When an ion gains or loses electrons without becoming neutral‚ its electronic charge is altered in the process. In chemistry the loss of electrons is called oxidation while electron gain is called reduction. The first battery was created in 1799 by Alessandro Volta . Today batteries provide the power for an amazing variety of devices‚ everything from flashlights to robots‚ computers‚ satellites and cars. Inventors and researchers
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ACID) AS ALTERNATIVE BATTERY Battery or more precisely‚ a cell – is a device in which the reaction between two substances can be made to occur in such a way that some of the chemical energy is converted to useful electricity. Since its invention‚ the battery has become the most common power source for many household and industrial applications. There are many ways to construct a battery‚ as well as ways to control its generated output. This Home-made Vinegar Battery is a battery that is constructed
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Make a Battery from Potato Introduction: Batteries generate electricity through a chemical reaction between two different electrodes and one electrolyte. Use of Copper and Zinc electrodes and Sulfuric acid as electrolyte is a proven method for this process. We are wondering if we can use any other liquid as electrolyte? This gave us the idea of using a potato as electrolyte. After all a fresh potato has a lot of juice that may serve our purpose as electrolyte. Problem: Can Potato be used
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the potato in half and place them next to each other‚ flat face down on a plate 2. Connect one end of the white wire to one of the nails and then place the nail into one half of the potato. 3. Connect the other end of the white wire to the battery holder inside the digital clock. 4. Connect one of the pennies to one end of the black wire then put the penny into the same half of the potato as the nail with the connected to it. 5. Connect the other end of the black wire to the other penny
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