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根据光通过黑箱前后的方向,判定黑箱内所用光学元件的种类及个数,就是光学黑箱问题.光学黑箱问题在物理竞赛及近几年的中考中时常出现,为广大师生所关注.下面就如何解决光学黑箱问题做粗浅的分析,以便与广大师生们商榷. 一、解决光学黑箱问题首先要搞清以下两个问题1.中学阶段所接触的光学玻璃镜子有五种: 平面镜、凸镜、凹镜、凸透镜和凹透镜.前三种都是面镜,遵从光的反射规律;后两种为透镜,遵从光的折射规律.光线不能穿透面镜,而被反射回来;但是,光线
According to the direction of the light passing through the black box, the type and number of optical components used in the black box are determined. This is the problem of the optical black box. The problem of the optical black box often occurs in the physical competition and in recent examinations in recent years. It is a concern for teachers and students. The following How to solve the problem of optical black box to do a superficial analysis, so as to discuss with the teachers and students. First, solve the optical black box problem First of all, we should find out the following two problems: 1. There are five types of optical glass mirrors that are in contact in the middle school stage: Plane mirror, convex mirror , concave mirror, convex lens and concave lens. The first three are all mirrors, obey the law of light reflection; the latter two are lenses, follow the law of light refraction. Light can not penetrate the mirror, but is reflected back; but, the light