Oersted demonstrated that electric currents could produce magnetic effects . 奥斯忒表演了电流能引起磁效应。
2.
The electro - magnetic telegraph was the wonderful and most unexpected consequence of the experiments of oersted and the mathematical investigations ofampe : and the modern art of navigation is an unforeseen emanation from the purely speculative and apparently merely curious enquiry , by the mathematicians of alexandria , into the properties of three curves formed by the intersection of a plane surface and a cone 电报是奥斯忒的实验和安培的数学研究最出乎人预料而令人惊异的结果；现代航海技术则意外地产生于亚历山大的数学家们对由一平面和一圆锥相交所形成的三条曲线的性质进行的纯粹思辩性的、显然仅仅是出于好奇的探索。
