things of the past. We now light our lamps with electricity. Switch on the button and there is the day-like light even in the darkest night. In summer seasons electric fans‚ air conditioning plants are used to provide us with cool atmosphere. In winter‚ heating plants are used to keep the room warm. Electric bells‚ press and stove are things of every-day use. People keep refrigerators in their homes to keep their food in a fresh condition. Indeed electricity serves as a faithful domestic servant in daily
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Lecture Notes: Basic Electricity Fall 2011 This course module introduces the basic physical models by which we explain the flow of electricity. The Bohr model of an atom – a nucleus surrounded by shells of electrons traveling in discrete orbits – is presented. Electrical current is described as a flow of electrons. Ohm’s law – the relationship between voltage‚ current and electrical resistance – is introduced. Learning Objectives Understanding the basic principles of electricity is a foundational
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CHAPTER - 12 ELECTRICITY HOTS Questions for Practice 1. Name a substance whose resistance almost remains unchanged by increase of temperature. 2. Name two special characteristics of heater coil. 3. A wire of resistance 4 ohms is bent to form a circle. What is the resistance between two diametrically opposite ends? 4. How does the resistance of a conductor change if its temperature is increased? 5. A current of 4A flows in a wire of resistance 60 ohms. Calculate electrical energy consumed in 2 minutes
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The moral issue in question in this scenario is whether or not medication should be prescribed for someone struggling with a break up so much that it is affecting their daily life. If I was the psychiatrist in this scenario I would prescribe the drug under the condition I still see the patient for regular talk sessions. I made this decision based on the major health factors involved‚ this person not sleeping or eating are signs of a deep depression that anti depressants may only slightly mask. I
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What is WiTricity ? -WiTricity‚ stands for wireless electricity‚ is a term coined initially by Dave Gerding in 2005 and used by a MIT research team led by prof. Marin Soljačić in 2007‚ to describe the ability to provide electricity to remote objects without wires (wireless power transfer). This could be useful to power consumer and industrial electronics like cell phones‚ laptops‚ etc. -WiTricity‚ a portmanteau for "wireless electricity"‚ is a trademark of WiTricity corporation referring to their
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Introduction Wireless is a term used to describe telecommunications in which electromagnetic waves (rather than some form of wire) carry the signal over part or the entire communication path. The first wireless transmitters went on the air in the early 20th century using radiotelegraphy (Morse code). Later‚ as modulation made it possible to transmit voices and music via wireless‚ the medium came to be called "radio." With the advent of television‚ fax‚ data communication‚ and the effective use of
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Moral and Ethical Issues in Gene Therapy Introduction Genetic research has advanced in a dramatic fashion in the last decade or so‚ to the point where it has now become possible to attempt therapeutic genetic modification‚ in a few cases of human genes‚ where a defects exists which manifests itself in certain serious diseases. This possibility‚ known as gene therapy‚ is only in its infancy. At present‚ no one knows how effective it will prove to be‚ even in the few conditions on which it is being
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Wireless Security Problems and Solutions INDEX: 1. Abstract……………………………………3 2. Introduction………………………………..3 3. WEP and the Small Network……………...4 4. Larger Wireless Environments…………….5 5. VPN……………………………………….6 6. War Driving and War Chalking…………...6 7. Conclusion…………………………………8 8. Biblography………………………………..9 Abstract: The need for security on any network is apparent: the prevention of eavesdropping and the desire for authentication has been the main focus of many network administrators
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UMTS NETWORK PLANNING‚ OPTIMIZATION‚ AND INTER-OPERATION WITH GSM UMTS Network Planning‚ Optimization‚ and Inter-Operation with GSM Moe Rahnema © 2008 John Wiley & Sons‚ (Asia) Pte Ltd. ISBN: 978-0-470-82301-9 UMTS NETWORK PLANNING‚ OPTIMIZATION‚ AND INTER-OPERATION WITH GSM Moe Rahnema John Wiley & Sons (Asia) Pte Ltd Copyright ß 2008 John Wiley & Sons (Asia) Pte Ltd‚ 2 Clementi Loop‚ # 02-01‚ Singapore 129809 Visit our Home Page on www.wiley.com All Rights Reserved.
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TERM PAPER Wireless LAN Security Enabling and Protecting the Enterprise INSIDE INSIDE ∆ Wireless LAN Technology ∆ ∆ ∆ Benefits of Wireless LANs Security Risks and Technical Challenges Recommendations WIRELESS LAN SECURITY Contents Executive Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Wireless LAN Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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