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1. The Meaning of Appropriate Technology(20226)

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1. The Meaning of Appropriate Technology(20226)

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The technology adapted to condition of the third world. It's focused for improving quality of life and eradicating poverty. It uses the natural resources as well as uses the materials that readily available and surely with low cost.

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GravityLight: lighting for a billion people

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[1] By Whom and When It Was Invented 20209 양원준

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[1] By Whom and When It Was Invented 20209 양원준

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In 2013, Jim Reeves and Martin Redford developed Gravity Light, which uses gravity to make energy

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[20209 양원준]20% of the world's population uses oil(등유) lamps because they cannot use electricity. It leads to respiratory diseases(호흡기 질환), fire accidents, environmental pollution, and poverty. To solve this problem, Deciwatt(기업 이름) developed an LED lamp that can be used without electricity.

20207 남건우
GravityLight was designed to provide a clean, affordable alternative to kerosene so Unlike other solutions, GravityLight has no reliance on external factors such as sunlight  so it is  less dangerous, polluting and not expensive

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To make device, it needs main device, pocket for weight, belt and coupling to connect main device and pocket. Gravity Light uses gravity to make electricity. If you hang a pocket containing 10 kg of soil or water, spring goes down because of gravity. The force moving by gravity is convert into kinetic energy and inside of device it change to light.

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[20209 양원준] / I think gravitylight is a very innovative idea.
It is because we can get light for 20 minutes just by raising the pocket up.  Also, it doesn't cost any money, so if we buy a gravitylight once, we don't have to use money to get light.

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3. My Opinion [The Reason I Think It Is Important] (20226 은채민)

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3. My Opinion [The Reason I Think It Is Important] (20226 은채민)

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I think this is important because it doesn't get affected to geological characteristic. Like wind generator, it needs certain amount of wind so it only can be on high place. And it doesn't make need or make harmful fuel. Also it is easy to use too.

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Your Opinion [The reason you think the technology is important] - 20218 김아영

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Your Opinion [The reason you think the technology is important] - 20218 김아영

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I think the technology is important because it doesn`t cost much to make and it is easy to use. Gravity light gave electricity to many people. As people used electricity, their living time increased.