摘要
自制了一套磁性液体演示仪。该演示仪利用激光传感器来检测磁性液体悬浮高度,添加数码管实时显示电路,测量磁性液体液面凸起高度变化与磁场的关系,能精确而直观地演示磁性液体的悬浮特性。该仪器操作简单、性能稳定、效果明显,能应用于课堂演示等场合,在实际应用中取得了良好的效果。
Magnetic liquid demonstration device is introduced by using electro-magnetic theory, electronic technologies and the characteristics of magnetic liquid. The instrument quantitatively displays through digital tube voltage circuit and uses laser sensors to detect the suspension height of magnetic liquid, which can accurately and visually demonstrate the suspension characteristics of magnetic liquid, This instrument＇ s structure is simple, stable, easy to operate, which can be widely used in classroom demonstration, curriculum design and other situations and obtain a good teaching result in practical applications.
出处
《实验技术与管理》
CAS
北大核心
2013年第12期67-68,共2页
Experimental Technology and Management
关键词
磁性液体演示仪
激光传感器
数码管显示
magnetic fluid demonstration deviee
laser sensort digital display tube
