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我们知道眼睛能看到物体,是因为由物体发出或其反射、折射的光线能射入眼睛中。那么眼睛是怎样看到平面镜或凸透镜所成的像的呢?一、眼睛看到的虚像平面镜所成的像是虚像,放大镜所成的像也是虚像,虚像不能承接在光屏上。如图1所示,发光点S发出的光,经平面镜反射后进入人的眼睛,它们的反射光线的反向延长线相交于一点S’。发光点S发出的光通过凸透镜折射的光没有会聚,但它们折射光线的反向延长线相交于一点S’。所以平面镜、凸透镜所
We know that the eye can see the object, because the light emitted by the object or its reflection, refraction into the eyes. Then the eye is how to see the flat mirror or convex lens made of the image? First, the eyes to see the virtual image plane mirror into a virtual image, magnifying glass into the image is also a virtual image, virtual image can not undertake on the screen. Shown in Figure 1, the light emitted by the light-emitting point S, after reflection by the plane mirror into the human eye, the reverse extension of their reflected light intersect at a point S ’. Light emitted by the light-emitting point S is not converged by the light refracted by the convex lens, but the reverse extension line of the refracted light intersects at a point S ’. So flat mirror, convex lens