论文部分内容阅读
光在均匀介质中是沿直线传播的,下面三种现象都与此有关.1、影子的形成光在传播过程中,遇到不透明的物体,在物体后面光不能到达的区域便产生影子.手影戏就是很好的例证.
Light travels in a straight line in a homogeneous medium. The following three phenomena are related to this. 1. The formation of shadows In the propagation process, opaque objects are encountered. In areas where light does not reach behind the objects, shadows are produced. The movie is a good example.