如何增强涡流管课堂演示实验的效果

How to enhance the demonstration effect of the eddy current tube

让NdFeB小磁体在铝管中下落,通过改变铝管及NdFeB小磁体的尺寸,测量出NdFeB小磁体的下落时间.通过数据分析,得出了一些有用的结论,可供制作此类仪器者参考.

Let a small magnet NdFeB fall freely along the aluminum tube. By changing the dimension of the aluminum tube and small magnet, we measure the time interval of falling. We get some conclusion. It is useful to those who want to fabricate the similar instrument.