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(单词翻译:双击或拖选)
You may not need to worry about batteries someday soon. A 15-year old girl, Ann Makosinski from Victoria, British Columbia, Canada has invented a flashlight that uses the heat from your hand for power.
Instead of using batteries the flashlight uses Peltier tiles2. Peltier tiles produce electricity when one side of the tile1 is heated and the other is cooled. In her first attempts she was able to produce enough power, but not enough voltage3. But eventually she was able to find a solution and produce a working flashlight.
Makosinki was able to build the flashlight for under 30 dollars. And considering you will never need to buy batteries, it’s a great deal.
点击收听单词发音
1 tile | |
n.砖瓦;vt.铺以瓦,铺以瓷砖 | |
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2 tiles | |
n.瓦片,瓷砖( tile的名词复数 );扁平的小棋子 | |
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3 voltage | |
n.电压 | |
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4 currently | |
adv.通常地,普遍地,当前 | |
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