摘要
文章介绍了一种估算地磁场的简单实验,即通过观测小圆柱形磁铁在地磁场中的微小摆动频率,并通过计算圆柱形磁铁在地磁场中受到的力矩来确定地磁场的大小。该方法应用于大学物理的课堂教学过程可以达到理论联系实际的教学效果。
A simple teaching experiment for estimating geomagnetic field is introduced.By observing the frequency of small swing of a little cylindrical magnet in geomagnetic field and calculating its moment,the geomagnetic field can be estimated.This method can be applied to the teaching of college physics to achieve the effect of combining theory with practice.
出处
《物理与工程》
2018年第1期80-81,共2页
Physics and Engineering
关键词
地磁场
永磁体
力矩
geomagnetic field
permanent magnet
moment
