Metal detectors in schools pose more of a threat than a sense of security. Every student carries metal of some form on them. Pens‚ pencils‚ notebooks and other school supplies all contain metals. If we try to make schools “safer” by placing metal detectors in the entrance and exit of every school building. With many school shootings and stabbings‚ media and parents have proposed new safety measures. Placing metal detectors and spending extra time on safety management takes time away from class and
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13th‚ 2012 Should Schools have Metal Detectors? Have you ever felt violated‚ disrespected and dishonored to the point of no return? Many students around the world feel such a way every day. According to a 2002 National School Board Association report‚ 10.1 percent of school districts nationwide implement the use of metal detectors. Are metal detectors even effective? Why should students be forced to cooperate with a violation of their rights? High Schools around the world should not employ
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Turn a calculator into a metal detector I recently discovered a really cool method in using a few household items to make a HomeMade Metal Detector! Heres how to make your own! Heres a link to the video : http://www.youtube.com/watch?v=_G5HzeIl9cY [pic] Step 1 What you need. All you need for this project is‚ an: AM Radio ‚ some tape ‚ and a small calculator. [pic] Step 2 Let’s Begin Begin by turning the AM radio on. Tune it to the high end of the AM band‚ but
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Metal Detectors: Justifying School Safety How much is your child’s safety worth? Are you willing to put a price tag on your child’s life? Many schools are putting a price tag‚ but fortunately several are not. A shocking one in ten students has carried a weapon to school in New York. Statistics like this cannot be music to the ears of parents. You have to wonder what schools are doing about this awful matter. A notion that has been around‚ yet a new idea is helping pave the future on student safety
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1 Smoke Detector ∗ Sardar Nimisha Sankhe∗ ‚ Nisarg Vinod† and Ekta Vira Patel Institute of Technology‚ Mumbai-400058‚ India‚ nimisha.sankhe@yahoo.com † Sardar Patel Institute of Technology‚ Mumbai-400058‚ India‚ naughty.nisarg@yahoo.co.in ‡ Sardar Patel Institute of Technology‚ Mumbai-400058‚ India‚ ekta vira@ymail.com Abstract Most of the smoke alarms available in the market use one or another kind of smoke sensor which increases the cost and also require complicated interfacing circuitry
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BUILD AN EARTHQUAKE DETECTOR If you live in an earthquake zone‚ this vibration sensor can save your property or your life. If not‚ it can be used as a bur- or many of us that live in a seismically active region‚ an earthquake is a very real and constant threat. Even moderate earthquakes that are not strong enough to hurt anyone can cause a significant amount of damage to the contents of your house if you are not prepared. Although earthquake prediction has made great strides over the
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INFRA-RED FLAME DETECTION 123 S200+ SERIES TRIPLE IR FLAME DETECTORS USER MANUAL S200+ USER MANUAL INDEX PAGE A) INTRODUCTION 1 1. 1 Flame Detection Operation 1 3. B) Introduction 2. General Construction 4 PRODUCT APPLICATION 5 1. C) Application 5 2. Benefits of the S200+ Series 6 8 Introduction 8 2. Electrical Characteristics 8 3. Mechanical Characteristics 13 4. Environmental
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A heat detector is a fire alarm device designed to respond when the convected thermal energy of a fire increases the temperature of a heat sensitive element. The thermal mass and conductivity of the element regulate the rate flow of heat into the element. All heat detectors have this thermal lag. Heat detectors have two main classifications of operation‚ "rate-of-rise" and "fixed temperature." |Contents | |
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Smoke Detectors A smoke detector is a device that detects smoke and prevents fire. Smoke detectors were used in many houses in North America and it is important safety devices for homes. Smoke detectors are cheap and it gives alarm of any warning when it rise a high temperature that was produced by a fire this is because smoke detectors can detect the combustion gases from a small flame. In the article‚ a woman resident of the Silverpuff apartment were seriously injure of a fire because
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a small border reservation community I passed two Navajo youth leaning against the wall‚ one leg propped behind them for support. They wore black tee-shirts‚ one declaring “Indian Pride on the Rise‚” the other showing a heavy metal rock group “Twisted Sister.” Both wore high topped basketball shoes and hair free flowing to their shoulders. One spoke to me. “Hey‚ are you the lady who is talking to dropouts? You should talk to me. I’m a professional dropout.” I did. And to many others. Their stories
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