| 静电场模拟描迹实验的误差分析和仪器改进 |
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| 引用本文： | 程方锐,吕砚荻,张瑞杰,王静,董爱国,王亚芳.静电场模拟描迹实验的误差分析和仪器改进[J].大学物理实验,2012(3):103-106. |
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| 作者姓名： | 程方锐 吕砚荻 张瑞杰 王静 董爱国 王亚芳 |
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| 作者单位： | 中国地质大学 |
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| 基金项目： | 中国地质大学开放基金项目资助 |
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| 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。
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| 关 键 词： | 导电介质 电压表内阻 静电场 探针改进 |
Systematic Error and Instrument Improvement in Electrostatic Field Experiment |
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| Institution: | CHENG Fang-rui,LV Yan-di,ZHANG Rui-jie(China University of Geosciences,Beijing 100083) |
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| 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. |
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| Keywords: | conductive medium resistance of voltmeter electrostatic field improvement of needle system |
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