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如何把电磁波转化声音
更新时间: 2020-09-16 00:00:00  

电磁波在被接收后,可产生随频率和振幅而变化的强弱不等的电流,电流经过发生装置,通过电磁感应原理便可以产生声音。

电磁感应原理:是指放在变化磁通量中的导体,会产生电动势。产生在闭合回路上的电动势和通过任何该路径所包围的曲面上磁通量的变化率成正比,意味着当通过导体所包围的曲面的磁通量变化时,电流会在任何闭合导体内流动。

关键词: 如何 电磁波 转化 声音

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