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有一个成语叫“形影不离”。你怀疑过这个成语的真实性吗?实际上,影子很爰跟它的主人玩儿捉迷藏的游戏。要想在捉迷藏时轻松找到它,你最好能做到了解自己的影子。咦?影子去哪儿了?如果你刚好处在大树的背后、漆黑的洞穴等昏暗的环境中,那就别想找到你的影子了。因为,这时候你的影子根本不存在。那么,影子是怎样产生的呢?原来需要满足两个条件:光和不透明的物体。光总是沿着直线传播。当光遇到不透明的物体时,在照射不到的物体后面就会留下一个暗区,这个暗区就形成了物体的影子。
There is an idiom called “inseparable ”. You doubt the authenticity of this idiom? In fact, the shadow is very playful and hide and seek with its owner of the game. If you want to find it easily while playing hide and seek, you’d better be able to understand your own shadow. Where do the shadows go? If you happen to be in the darkness behind a tree, dark cave, etc., do not try to find your shadow. Because, at this time your shadow simply does not exist. So how do the shadows come about? There are two conditions that must be met: light and opaque objects. Light always travels in a straight line. When the light encounters an opaque object, it leaves a dark area behind the inaccessible object that forms the shadow of the object.