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在较暗的屋子里,把一支点燃的蜡烛放在一块半透明的塑料薄膜面前,在它们之间放一块钻有小孔的纸板。由于光是沿直线传播的,塑料薄膜上就出现烛焰的倒立的像。这种现象叫做小孔成像。利用小孔成像可以制作针孔照
In a dark room, place a lighted candle in front of a translucent plastic film and place a holed cardboard between them. As the light travels in a straight line, an inverted image of candle flame appears on the plastic film. This phenomenon is called hole imaging. Use pinhole imaging to make pinhole photos