光电效应测普朗克常数的数据处理及误差分析  

Data Processing and Error Analysis of Measuring Planck Constant in Photoelectric Effect

作　　者：王云志[1] 赵敏[1] 

机构地区：[1]北京联合大学,北京100101

出　　处：《大学物理实验》2011年第2期93-95,共3页Physical Experiment of College

摘　　要：在光电效应测量普朗克常数的实验中,采用零电流法测遏止电压,实验操作的可重复性好。不论是采用逐差法还是线性回归法,计算得出普朗克常数的相对误差都在2.5%之下,甚至相对误差小到0.03%,而且通过对该实验数据处理及分析,发现同一次实验数据,用不同的数据处理方法,相对误差竟相差几十倍。By using zero-current-voltage method to measure the stopping voltage,measuring the Planck constant in the photoelectric effect experiment has good repeatability of experimental operation.Either by subtraction or by linear regression method,the relative errors of Planck constant is almost below 2.5%,sometimes the relative error is 0.03%.By processing and analyzing the experimental data,we find the same experimental data has the different relative errors by using different data processing methods.

关 键 词：光电效应 普朗克常数 零电流法 遏止电压 

分 类 号：O321[理学—一般力学与力学基础]