摘要
介绍了对楞次定律演示仪的几次改进情况,并分析了改进中存在的利弊,提出了直接用铜丝绕制成线圈代替原演示装置中的铝环,可有效地解决涡流现象带来的问题.该实验的改进过程可提高师生的动手能力,体验创新过程带来的喜悦心情,激发和培养学生的创新能力,同时也可弥补条件欠缺的地区没有楞次定律演示仪的缺陷.
Several improvements on a Lenz law demonstration instrument are introduced, and the advantages and disadvantages are analyzed. In order to solve problems caused by the eddy current in the demonstration experiment, copper wire loops are used instead of aluminum loop. The operating skills of teachers and students are increased and the innovating ability of students is cultivated during the process of improving the device. They also enjoy the happiness of success. At the same time, the device can make up the lack of demonstration device in rural areas.
出处
《物理实验》
2008年第9期23-25,共3页
Physics Experimentation
关键词
楞次定律
线圈
铜丝
演示实验
Lenz law
coil
copper wires
demonstration experiment
