影子和像,本来是两类截然不同的光现象,但是,时至今日,仍有不少同学将两者混为一谈,甚至在自己的像片下方还留下某年某月留影的字样。那么,究竟什么是影子?什么是像呢?两者的区别在什么地方?原来,影子是光射到不透光物体上,在物体后面形成的黑暗形象;像是物体射出的光直接或间 Shadows and images were originally two different kinds of light phenomena. However, today, many students still confuse the two, even leaving a picture of a certain year and a certain month under their own photos. So, what exactly is a shadow? What is it like? What is the difference between the two? Originally, the shadow is a dark image that light hits an opaque object and forms behind the object; like the light emitted by an object directly or indirectly