1832年，也就是迈克尔·法拉第发现磁场变化会产生电场的那一年，一位年轻的法国工程师为一种新的、效率更高的水车申请了专利。
In 1832, the year of Michael Faraday's discovery that a changing magnetic field produces an electric field, a young French engineer patented a new and more efficient waterwheel.
迈克尔·法拉第是铁匠的儿子，幸运的他在21岁事业便有了突破。
Michael Faraday, the 21-year-old son of a blacksmith, had a lucky break.
1831年，迈克尔·法拉第(Michael Faraday)发现，在一根电线内流动的电流会在邻近的一根电线内产生次级电流(secondary current)。
Michael Faraday discovered in 1831 that an electric current flowing in a wire induces a secondary current in a neighbouring wire.
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