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新能源的發展:從空氣中收集電力

原文:
Scientists once believed that water droplets in the atmosphere were electrically neutral, and remained so even after coming into contact with the electrical charges on dust particles and droplets of other liquids. But new evidence suggested that water in the atmosphere really does pick up an electrical charge. Galembeck and colleagues confirmed that idea, using laboratory experiments that simulated water's contact with dust particles in the air. They used tiny particles of silica and aluminum phosphate, both common airborne substances, showing that silica became more negatively charged in the presence of high humidity and aluminum phosphate became more positively charged. In the future, he added, it may be possible to develop collectors, similar to the solar cells that collect the sunlight to produce electricity, to capture hygroelectricity and route it to homes and businesses. Just as solar cells work best in sunny areas of the world, hygroelectrical panels would work more efficiently in areas with high humidity, such as the northeastern and southeastern United States and the humid tropics.

科學家大多相信大氣中的水滴應是電中性的,即使它接觸帶電的粒子。而且多數的人覺的水滴的存在應會減少靜電的存在。但是Galembeck研究團隊發現的實驗結果不是如大眾所想的,他們利用矽磷酸鹽與鋁磷酸鹽當空氣中的飄浮粒子,在溼度高(空氣中的水分子多時)的條件下,兩粒子的帶電量均有增加的趨勢。但是為什麼增加的原因還不是很清楚,可能的解釋為空氣中水滴或許是帶電荷的。
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