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在教材中,光电效应位于光的电磁波理论之后,乃是学生对光本性认识的转折点,要想让学生从刚认识的波动理论突然又接受这样一个粒子性的理论着实不易,因此第一节课为了给学生打下认识上的基础,不宜教授过多理论内容,而应着重在现象上探讨,因此范围限定在讲清楚两点内容:光电流的产生条件和光电流大小的决定因素.1由考题引发的演示实验原初的光电效应的锌板演示实验,是使用的大功率弧光
In textbooks, the photoelectric effect is located after the light electromagnetic wave theory, but a turning point for students to understand the nature of light. To make students suddenly and accepting such a particle theory from the newly-discovered wave theory is really not easy, the first lesson In order to lay a cognitive foundation for students, should not teach too much theoretical content, but should focus on the phenomenon to explore, so the scope is limited to clarify two points: the photocurrent generation conditions and the photocurrent size of the decision factors. The demo experiment of the original photoelectric effect of the zinc plate demonstration experiment, is the use of high-power arc