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.
出处
《大学物理实验》
2011年第2期93-95,共3页
Physical Experiment of College
关键词
光电效应
普朗克常数
零电流法
遏止电压
photoelectric effect
Plank constant
zero electric current method
stopping voltage
