陈贸辛,王福合

• 1:首都师范大学物理系物理实验教学中心

摘要(Abstract)：

地磁场在日常生活中起着非常重要的作用,目前地磁场的测量方法有很多种,部分实验方法已经应用于学生实验。我们利用永久磁铁在磁场中发生偏转后做阻尼运动的原理来测量磁场,为了准确测量振动周期,我们将一束激光照射在附着在永久磁铁上的小镜子,利用光杠杆原理放大纪录磁铁振动的轨迹,从而通过摄像分析精确计算磁铁振动周期,由此测出地磁场的水平分量。实验测得本地地磁场水平分量为0.0324mT。本文主要为学生进行探究实验提供方法和思路。

关键词(KeyWords)： 地磁场;阻尼振动;光杠杆

Abstract:

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基金项目(Foundation):

作者(Author): 陈贸辛,王福合

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