6块相同的长方形的镜子垂直于地面围成正六边形,相邻的任意两块镜子间有一狭缝。一束水平激光由一狭缝中射入,由对面的狭缝中射出。现将激光水平旋转一定角度x,激光经过每个镜子反射一次后由同一狭缝射出,请问x是多少?
6块相同的长方形的镜子垂直于地面围成正六边形,相邻的任意两块镜子间有一狭缝。一束水平激光由一狭缝中射入,由对面的狭缝中射出。现将激光水平旋转一定角度x,激光经过每个镜子反射一次后由同一狭缝射出,请问x是多少?
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