| 在光电效应测定普朗克常数实验中测量方法的讨论 |
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| 引用本文： | 周永军,朴林鹤,吕佳.在光电效应测定普朗克常数实验中测量方法的讨论[J].沈阳航空工业学院学报,2011,28(2):85-87. |
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| 作者姓名： | 周永军 朴林鹤 吕佳 |
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| 作者单位： | 沈阳航空航天大学,辽宁,沈阳,110136 |
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| 摘 要： | 在光电效应测量普朗克常数实验方法中,分别采用零点法、曲率法和拐点法确定截止电压,并应用最小二乘法进行直线拟合求出普朗克常数数值进行比较,结果表明,曲率法测普朗克常数的相对误差为1.07%,零点法为1.60%,拐点法误差最大,在实验中要求学生采用合适的方法处理数据。
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| 关 键 词： | 光电效应 普朗克常数 截止电压 |
The measurement of planck constant in photoelectric effect experiment |
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| ZHOU Yong-jun,PIAO Lin-he,LV Jia.The measurement of planck constant in photoelectric effect experiment[J].Journal of Shenyang Institute of Aeronautical Engineering,2011,28(2):85-87. |
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| Authors: | ZHOU Yong-jun PIAO Lin-he LV Jia |
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| Institution: | ZHOU Yong-jun,PIAO Lin-he,LV Jia(Shenyang Aerospace University,Liaoning Shenyang 110136) |
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| Abstract: | In the experiments of measuring Planck constant by photoelectric effect,we ascertain the cutoff voltage by using the null point,the curvature and turning point and apply least square method to straight line fitting to compute Planck constant value.Results show that the relative error of the curvature and the null point is 1.07% and 1.60% respectively,and that of the turning point is the largest.The most appropriate method of data processing in experiments is proposed in this paper. |
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| Keywords: | photoelectric effect cutoff voltage planck constant |
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