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凸透镜四透镜是两种不同的透镜.凸透镜中间厚边缘薄,能把物体放大,凹透镜边缘厚中间薄,能把物体缩小.下面的实验能让凸透镜变成凹透镜, 看着透镜如何变脸?
Convex lenses Four lenses are two different lenses. The middle of the convex lens has a thick, thin edge that enlarges the object and the thinner edge of the concave lens reduces the object. The following experiment turns a convex lens into a concave lens and looks at how the lens fades?