地球周围存在地磁场 ,一般情况下 ,我们把地磁场看做匀强磁场 ,并把地磁场的水平分量作为地磁场的大小 .能否利用中学现有仪器和中学生所掌握的“带电粒子在磁场中的运动”等知识 ,让学生通过实验 ,测量出地磁场的大小 .笔者在这方面作了一点尝试 ,现介绍给大家 ,请各位同仁斧 There is a geomagnetic field around the earth. Generally, we regard the geomagnetic field as a uniform magnetic field, and use the horizontal component of the geomagnetic field as the size of the geomagnetic field. Can we use the existing instruments of middle schools and secondary students to master the “charged particles in the magnetic field? ”Sports in the" and other knowledge, so that students through the experiment, measuring the size of the Earth’s magnetic field. The author made a little attempt in this area, is introduced to everyone, please all colleagues Axe