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电力线谱、磁力线谱演示实验是中学物理实验的重要部分之一。电力线谱的传统演示方法与仪器存在问题较多,如可见度小、受环境温度湿度影响大、成功率低、演示效果欠佳等。这套仪器除可解决以上存在的问题外,特点是把电力线、磁力线、电场力、磁场力及一些电磁现象演示仪器集于一箱,形成比较完整的体系。与静电感应起电机、学生电源配合使用,可以完成中学物理演示实验二十多个。
Power line spectrum, magnetic line spectrum demonstration experiment is an important part of the middle school physics experiment. There are many problems in the traditional power grid representation methods and instruments, such as low visibility, large impact on ambient temperature and humidity, low success rate, and poor demonstration performance. In addition to solving the above problems, this set of instruments is characterized by the integration of power lines, magnetic lines, electric force, magnetic force and some electromagnetic phenomena demonstration instruments in a box, forming a relatively complete system. With the use of electrostatic induction motors and student power supplies, more than 20 physical demonstration experiments in middle schools can be completed.