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要从镜子里看到自己的全身像,穿衣镜至少要多高?你也许会说,镜子应当和人一般高.因为课本里已经指出,平面镜所成的虚像和原物大小相等,像和物体到镜面的距离相等,这给了我们这样一种感觉:镜子至少必须等于物体的大小才能将像完整呈现在镜中.大概古人也是这么想的,北京故宫里有一面镜子,大约有两米高;而《红楼梦》中,刘姥姥误入怡红院时照的镜子则是“四面雕空的板壁,将这镜子嵌在中间的.”
You might say that the mirror should be as tall as a man, because it has been pointed out in the textbook that the virtual image made by the plane mirror is equal in size to the original, like the object Mirror distance equal, which gives us the feeling: the mirror must at least equal the size of the object in order to be like a complete picture in the mirror.Also the ancients think so, there is a mirror in the Forbidden City in Beijing, about two meters high; The “Dream of Red Mansions”, Liu grandmother into the red hospital when the mirror according to the “carved on all sides of the wall, the mirror embedded in the middle.”