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传统的光的色散演示实验中,三棱镜和屏幕(或墙壁)为实验效果显示器,太阳光则兼有实验源、实验对象两个身份.这种实验设计的缺点不能保证一定有太阳光,如阴天、在阴面教室上课等.本文对光的色散演示实验的改进作简单介绍.1实验源的改进方法1.为了确保信号源的可靠性,有的教师以投影仪为信号源,将带有狭缝的纸板放在投影仪上,只有一束白光从狭缝射出,稍作调节即可演示,如图1.这种实验设计的缺点是以白色墙壁为实验效果显
In the experiment of traditional light dispersion demonstration, the prism and the screen (or the wall) are experimental effect displays, while the sunlight has both the experimental source and the experimental object. The shortcomings of this experimental design can not guarantee that there must be sunlight, Day, class in the negative classroom, etc. This article gives a brief introduction of the experiment of light dispersion demonstration experiment.1 Methods to improve the experiment source 1. In order to ensure the reliability of the signal source, some teachers use the projector as the signal source, Slit cardboard on the projector, only a bunch of white light emitted from the slit, a little adjustment can be demonstrated, as shown in Figure 1. The disadvantage of this experimental design is the white wall for the experimental results were significantly