“光电效应”是继“光的波动性”光具有“粒子性”的有力证据 ,在近代物理学上占有极其重要的地位 ,在实际生活中可应用于自动控制 ,因而本节课的教学具有重要的现实意义 .一、课件设置的必要性“光电效应”实验规律是本节课的重点和难点 ,由于电子的不可视性 ,光电效应的产生 “Photoelectric effect” is the strong evidence that “light’s volatility” light has “particles”. It plays an extremely important role in modern physics and can be applied to automatic control in practical life. Therefore, the teaching of this lesson has Important practical significance. First, the necessity of the courseware setting The “photoelectric effect” experimental law is the key and difficult point in this class. Due to the invisible nature of the electron, the photoelectric effect is produced.