switch from incandescent light bulbs to compact fluorescent light bulbs. When an incandescent light bulb is turned on‚ only ten percent of the electricity used is turned into light. The other ninety percent is wasted as heat. On the other hand‚ compact fluorescent light bulbs use seventy to seventy-five percent less energy than incandescent light bulbs and they last up to ten times longer than incandescent bulbs. For instance‚ by using a 26-watt compact fluorescent light bulb‚ which is equivalent
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Dave Hennesey Mr. Gregg AP Chemistry 2 February 2005 Humans: How We Are Destroying the World Around Us This generation and also future ones will suffer because of this‚ and us humans are mostly to blame. What are humans responsible for? We are responsible for endangering the nature and health of our ecosystems. One way we damage our ecosystem is by polluting the environment. Everyday millions of people use automobiles‚ trains‚ and airplanes to travel. This begs the question- how is this
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1. Choosing the text Both Harmer and Scrivener are very direct with their advice for choosing texts for reading and listening: Grade the tasks‚ not the material. Despite keeping this in mind I felt anxious about possibly choosing an authentic text that would be discouraging for our group of elementary-level students due to its complexity. I settled on a list of tips for saving energy published on the National Geographic Kids website (see Appendix 1). I chose this text because we have
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Pollution and its Negative Effects Pollution is the degradation of natural environment by external substances introduced directly or indirectly. Human health‚ ecosystem quality and aquatic and terrestrial biodiversity may be affected and altered permanently by pollution. Pollution occurs when ecosystems can not get rid of substances introduced into the environment. The critical threshold of its ability to naturally eliminate substances is compromised and the balance of the ecosystem is broken.
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Essay on Global Warming Introduction : Global warming is the term used to describe a gradual increase in the average temperature of the Earth’s atmosphere and its oceans‚ a change that is believed to be permanently changing the Earth’s climate. Even though it is an ongoing debate‚ it is proved by the scientists that the planet is warming. Global warming is affecting the nature’s balance and has a huge impact on life like continued heat waves‚ and sudden occurrence of storms
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Conservation of Natural Resources Introduction: Humans have always made use of other species. Most wild species are found in areas where people live. This is either because people want to gather natural resources from there or they put their life to risk for purpose. Over the last 10‚ 000 years our food has come increasingly from cultivated plants and animals. This has resulted in the rapid increase in human population. The wise and smart use of the earth’s resources by humanity is termed as
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than make up that additional cost through energy savings. 3. Change Your Light Bulbs One of the least expensive and most effective changes you can make in your home is replacing your light bulbs. According to Energy Star‚ one of its qualified compact fluorescent light bulbs (CFL)‚ which cost just a few dollars‚ “will save about $30 over its lifetime and pay for itself in about 6 months. It uses 75 percent less energy and lasts about 10 times longer than an incandescent bulb.” Although some people
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2013 Table of contents Chapter 1 Working Mechanism 3 1.1 Working Mechanism of Compact Fluorescent Lamp 3 1.2 Working mechanism of ballast 4 Chapter 2 Design of Compact Fluorescent Lamp Electronic Ballast 6 2.1 The function of electronic ballast 6 2.2 Circuit diagram 6 2.3 Some factors about influence of working frequency of ballast 7 2.4 Detail design of this project 8 2.4.1 Driver IC - Compact FAN7710 8 2.4.2 Selection of Resistance 9 Chapter 3 Light‚ Indicator & category
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work by passing a current through a tube filled with argon gas and mercury. This produces ultraviolet radiation that bombards the phosphorous coating causing it to emit light. Bulb life is very long - 10‚000 to 20‚000 hours * Compact Fluorescent Lamps- compact Fluorescent Lamps (CFLs) are a modern type of light bulbs‚ that work like
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it is for our own benefit to protect it and to take measures to make the world clean and green because as the proverb says "We won’t have a society if we destroy the environment". There are some ways to save our nature‚ such as : we have to use compact fluorescent light bulbs‚ we must plant the trees‚ we have to turn off our devices and we have to avoid using your personal vehicles as much as possible. We have to use fluorescent light bulbs. We should change our normal bulbs to them. they will
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