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一、问题的提出“光电效应”内容是高考重点考查的内容,也是学生比较难掌握的部分。如果能用实验直观展示出物理现象,对规律的掌握是有非常大的帮助的。1.现有实验仪器简介现在中学实验室通常配备有J25109和J2517两类演示器材。J25109型光电效应演示器(图1),光电管遮光性好,缺点是学生看不见光电管和其工作电路,无法把实验现象和光电效应现象联系起来,教学效果大打折扣。
First, the issue put forward “photoelectric effect ” content is the key test of the college entrance examination content, but also students more difficult to grasp the part. If you can use experimental visual display of physical phenomena, grasp of the law is very helpful. 1. Introduction to Existing Laboratory Instruments Secondary laboratory laboratories are now equipped with two types of demonstration equipment, J25109 and J2517. J25109 Photoelectric Effect Demonstrator (Figure 1), photocell shading is good, the disadvantage is that students can not see the photocell and its working circuit, the phenomenon can not be linked with the phenomenon of photoelectric effect, greatly reduced teaching effectiveness.