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《Journal of Hunan University of Arts and Science(Natural Science Edition)》 2012-02
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Measuring the horizontal magnetic intensity of geomagnetic field based on the dynamic equation

TAO Qing-bin,WU Xiao-zan,WANG Jin-hui,GU Teng-feng,PENG Tian-feng(School of Physic and Electronic,Central South University,Changsha 410083,China)  
The common measurement methods of the horizontal magnetic intensity of geomagnetic field include optical pump magnetometer,hall transducer,tangent galvanometer and torsion balance,which need to determine the complex physical quantities.According to the experiment of using single pendulum to measure the acceleration of gravity,a method of measure the horizontal magnetic intensity of geomagnetic field based on the dynamic equation is put forward.This method builds the relationship between the current of Helmholtz coil and the vibration period of magnetic needle and gets the horizontal magnetic intensity by linear fitting,of which the measuring result is coincide with the reference.This new method is simple and convenient and has theoretical significance and practical value
【Fund】: 2011年中南大学大学生创新训练资助项目(CL11108);2011年中南大学物理教改基金资助项目;2011年度中南大学米塔尔学生创业资助项(11MY20)
【CateGory Index】: P318.6
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