【摘要】 静电场模拟描迹实验是大学物理实验中非常典型的一个实验,在该实验中,误差的主要来源有探针的不同步,导电介质的导电性,电压表内阻等。本文通过描绘同轴圆柱电极板的等势线分布图,定量的研究了以上几种误差来源对实验结果的影响,找出了最佳的实验条件,并对实验仪器进行了改进,大大降低了实验的误差。更多还原

【Abstract】 The electrostatic field experiment is one of the typical experiments.The main sources of the systematic errors in this experiment are from the in-synchronization between two probe needles,the conductivity of the conductive medium and the resistance of the voltmeter.The paper here present a research on how the above errors influence the results by probing the equipotent line maps of the coaxial cylindrical electrode plate.The best experiment conditions were recommended.Meanwhile,the in-synchronization of two needles is eliminated by improving the probe system and the systematic error was reduced greatly.更多还原