如图1所示,将一枚硬币放入装水的玻璃杯中,人眼从杯旁边看过去,能看到硬币的几个像?初步分析,可看到两个像。忽略玻璃的折光作用,如图2所示,产生这两个像的原因是因为:硬币上的光线从水表面和玻璃杯侧壁进入空气时因发生折射而分别形成虚像。 As shown in Figure 1, a coin into the water glass, the human eye from the cup next to see, you can see a few like coins? Preliminary analysis, you can see the two images. Ignoring the refraction of the glass, as shown in Figure 2, the two images are generated because the light on the coin forms a virtual image due to refraction as it enters the air from the water surface and the side wall of the glass.