黑板反光的原因是什么?估计听到这个问题的人几乎都会不约而同地说是因为黑板发生了镜面反射.可以说每个学过物理的人都曾在物理教师那儿获得过这个标准答案.但如果细究下去,答案似乎并非那么显而易见.比如,有的教师解释时常说反光的地方比较光滑,所以造成了镜面反射,那为什么坐在后排的同学并没感觉到黑板反光.难道黑板会变魔术,一会儿变粗糙,一会儿变光滑. The reason why blackboard reflection is estimated? Almost all of the people who heard this question would spontaneously say that because the blackboard was specularly reflected, it can be said that everyone who has studied physics received this standard answer from a physics teacher, but if For example, some teachers often say that the place of reflection is relatively smooth, resulting in specular reflections, so why do students sitting in the back row did not feel that the blackboard is reflective? Is it that blackboards can become magic, After a while rough, smooth for a while.