放大镜是一块中间凸起的透明物体,所以又叫凸透镜。透过凸透镜看物体,可以看到放大了的物体虚像。电视放大镜中间并不凸起,但是也能放大物体。那么,电视放大镜是怎样放大物体的呢?这还得从光线的折射谈起。 Magnifying glass is a convex object in the middle, so called convex lens. Look through the convex lens object, you can see the magnified object virtual image. TV magnifier does not protrude in the middle, but also to enlarge the object. So, the television magnifying glass is how to enlarge the object? This has to talk about the refraction of light.