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13、: Section1DIV.MyFav_1287025204227 OLMARGIN-BOTTOM: 0cmDIV.MyFav_1287025204227 ULMARGIN-BOTTOM: 0cm你准备好了吗？手电筒、平面镜、白纸。立即行动吧！（1）在暗室里，桌上铺一张白纸，把一小块平面镜平放在纸上。（2）让手电筒的光正对着平面镜照射，从侧面看去，白纸亮还是玻璃亮？问自己实验观察的现象是什么？分析归纳实验现象，可以得到的什么结论？请让我来帮助你因为镜面很光滑，垂直入射到镜面的光被垂直反射回去，射到其他方向的光极少，从侧面看去，基本没有光线射入眼中，所以平面镜看起来比较暗。而白纸表面粗糙反射光线射到各个方向，所以从侧面看到白纸比较亮。读一读，想一想该怎么走呢？一天晚上，刚刚下过雨，路上出现了一个个小水坑，但月光非常明亮。小刚要到小明家玩，出门之前，妈妈嘱咐道：“路灯坏了，小心点！亮的地方是水坑。”小刚听妈妈的嘱咐果然没踩到水坑。小刚很快从小明家回来，走之前小明嘱咐道：“小心点！不亮的地方是水坑”。小刚听小明嘱咐也没踩到水坑。小刚糊涂了：“怎么一会儿亮的是水坑，一会儿不亮的是水坑呢？”。试根据甲、乙两示意图加以解释。