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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“Less is More” Ludwig Mies van der Rohe is best known for his popular aphorism “less is more‚” which describes the simplicity of his modernist architectural style. As described by Robert Hughes in Visions of Space‚ Mies van der Rohe transformed America’s major cities from heavy‚ clad masonry to high-rising steel and glass skyscrapers. Mies van der Rohe’s style was praised and adopted by many other architectural professionals. However‚ not all architects were fond of Mies van der Rohe’s “less is
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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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and even at our home games. The referees are always managing to make unjust calls against us. Something that not only the players‚ and parents notice‚ but even coaches that have come from other school districts have realized. I’ve even experienced hearing racial slurs said to my teammates and I in a football game. Not being the first time‚ we knew how to handle it and kept a cool mind and just ignored it. It’s something that nobody would like to hear but I think that it’s important to react the right
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Technology Devices to Overcome the Limitations of Sight and Hearing Humans have sight and hearing limitation. Without any devices‚ our sight and hearing was limited. Most of the limitation of sight can be overcome with the help of certain optical instruments such as magnifying glass‚ microscope‚ binoculars and others. The range of frequency of hearing in human 20 Hz to 20 000 Hz. It was different according to the age of a person. Hearing limitations can be overcome by using devices such as microphone
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Identification and Assessment of Children with hearing Impairment The Assessment program for children with hearing impairment includes: 1. Audio logical Evaluation Audiology- is the science of testing and evaluating hearing ability to detect and describe hearing impairments. Audio logical evaluation- is done by an audiologist through the use of sophisticated instruments and techniques. Audiometer- is an electronic device that generates sounds at different levels of intensity and frequency
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Less Personal Interactions Electronic and computer interactions are less time consuming‚ do not take as much thought and effort‚ and is less involving. When electronics increased in our generation‚ face-to-face interactions decreased. Electronic interactions has made people lazy‚ and caused a decrease in personal encounters. Although electronics have made a few positive impacts in one’s daily life‚ electronics have caused more damage and negative impacts than positive. Social media is one of
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[pic] “AIDS IN AFRICA AND INTERNATIONAL AID” Business’s Ethics Project Instructor: Zlat Milovanovic Date: January 03‚ 2011 Made by: Ana Stojanoska 2A1; ID 1719 [pic] INTRODUCTION: Acquired immune deficiency syndrome or acquired immunodeficiency syndrome (AIDS) is a disease of the human immune system caused by the human immunodeficiency virus (HIV).This condition progressively reduces the effectiveness of the immune system and leaves individuals susceptible
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