| 低温金属抗磁演示实验 |
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| 引用本文： | 张振富,钟国海,张义邴.低温金属抗磁演示实验[J].大学物理实验,2010,23(1):49-51,56. |
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| 作者姓名： | 张振富 钟国海 张义邴 |
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| 作者单位： | 上海大学,上海,200444 |
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| 基金项目： | 上海市大学生创新活动资金资助 |
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| 摘 要： | 基于电磁感应定律，设计了金属跳环抗磁演示实验装置，实验可演示铜、铝、不锈钢、塑料等材料的圆环在变化螺线管磁场中因电磁感应电流而上跳的实验现象，且结合液氮低温环境演示低温下金属环的环跳，可比对两种条件下的环跳高度，拓展了电磁感应实验内容，现象直观、明显。
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| 关 键 词： | 电磁感应 演示实验 抗磁 |
A Demonstration Experiment of Magnetic Repulsion with Metal at Low Temperature |
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| ZHANG Zhen-fu,ZHONG Guo-hai,ZHANG Yi-bing.A Demonstration Experiment of Magnetic Repulsion with Metal at Low Temperature[J].Physical Experiment of College,2010,23(1):49-51,56. |
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| Authors: | ZHANG Zhen-fu ZHONG Guo-hai ZHANG Yi-bing |
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| Institution: | ZHANG Zhen-fu,ZHONG Guo-hai,ZHANG Yi-bing (Shanghai University,Shanghai 200444) |
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| Abstract: | Based on the principles of electromagnetic induction and the properties of low-temperature metals,an apparatus of ring launcher was designed to demonstrate the electromagnetic laws.In this instrument,closed,split,and holed rings with several sizes and made of copper,aluminum,stainless steel,and teflon were provided.Experiments can show different jumps among these rings and between room temperature and liquid nitrogen temperature.The phenomena are interesting and impressive. |
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| Keywords: | electromagnetic induction demonstration experiment magnetic repulsion |
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