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1问题提出在初中物理课上,我们研究了小孔成像.用一个带有小孔的板遮挡在屏幕与物之间,屏幕上就会形成物的倒像,我们把这样的现象叫小孔成像.前后移动中间的板,屏幕上像的大小也会随之发生变化,这种现象说明了光沿直线传播的性质.孔只要够小,它的形状不论是方的、圆的、三角的,对像的清晰程度和像的形状都没有影响.如果孔很小时,为什么孔的形状不会影响像的形状呢?如
PROBLEM PROBLEMS In junior high school physics class, we studied the imaging of small holes. Using a plate with small holes to obscure the screen between the screen and the object, an inverted image of the object was formed on the screen. We called this phenomenon Imaging. Move the middle of the board back and forth, the size of the image on the screen will also change, this phenomenon shows the nature of the light along a straight line. As long as the hole is small enough, its shape, whether square, round, triangular , The clarity of the image and the shape of the image have no effect.If the hole is small, why the shape of the hole does not affect the shape of the image?