大学物理 ›› 2015, Vol. 34 ›› Issue (4): 26-26.

• 著者文摘 • 上一篇    下一篇

利用亥姆霍兹线圈测量真空磁导率

刘竹琴   

  1. 延安大学物理与电子信息学院,陕西延安716000
  • 出版日期:2015-04-25 发布日期:2015-04-20

Measuring Permeability of vacuum by using the Helmholtz coil

  • Online:2015-04-25 Published:2015-04-20

摘要: 采用FD-HM-I型亥姆霍兹线圈,利用高灵敏度毫特斯拉计,探测亥姆霍兹线圈公共轴线中点的磁感应强度.通过改变亥姆霍兹线圈中电流的正、反方向,消除了地磁场影响,从而精确测定了真空磁导率.

关键词: 真空磁导率, 亥姆霍兹线圈, 磁场强度

Abstract: The magnetic induction intensity of Helmholtz coil common axis point is measured by using both the FD-HM-I type Helmholtz coil and high sensitivity of milli Tesla meter. Through changing the positive and reverse direction of current of Helmholtz coil, the effect of magnetic field is eliminated, and then the permeability of vacuum is measured accurately.

Key words: permeability of vacuum, Helmholtz coil, magnetic field intensity

中图分类号: 

  • O441.5