光电效应实验是一个不易做成功的实验。虽然对该实验已有许多改进,但都需器材较多,且实用性不强。经理论上的分析和多次反复实验,总结出如下的改进方法,既简单易行,又确保成功。如附图,A 是一块锌板(可取电池的锌皮),B 是一块硬纸板,C 是一块干净的泡沫塑料(既作锌板和硬纸 The photoelectric effect experiment is an experiment that is not easy to do successfully. Although there have been many improvements to the experiment, more equipment is needed and practicality is not strong. After theoretical analysis and repeated experiments, the following improvements have been summarized, which are both simple and successful. As shown in the drawing, A is a zinc plate (battery zinc skin is preferable), B is a piece of cardboard, and C is a clean foam (both for zinc plate and cardboard)