光电效应特性曲线“倒置”问题的分析

Analysis of "lnversion" Problem of Photoelectric Effect Characteristic Curve

在光电效应实验中,伏安特性曲线按照波长由小到大的顺序排列,但是404.7nm却在435.8nm的下面,从谱线的发光强度和光电光管的光谱灵敏度两方面,对光电效应实验中特性曲线"倒置"的问题进行了分析,解释了实验教学中容易引起困惑的问题。

The volt ampere characteristic curve in the photoelectric effect experiment is arranged in the order of the wavelength from small to large,but 404.7nm is below 435.8 nm,and the students cannot understand it.The problem of"inversion"of the characteristic curve in the photoelectric effect experiment is analyzed from two aspects of the luminous intensity of the spectral and the spectral sensitivity of the optical tube,which explains the problem that is easily confusing in experimental teaching.