Two interested demonstration experimental devices, electromagnetic induction pendulum and electromagnetic induction top, and its principle, schematics are presented.

• 根据电磁感应定律和简单的电子线路设计的电磁感应摆与电磁感应陀螺,是一个有趣的演示实验。本文介绍了这两种装置的结构和工作原理。