The fact that we can see real images formed by concave mirrors when we stand between the center and the focus can be easily explained if we remember that we see not by an optical sensor with a fixed focal length, but by an optical system with a variable focal length called eye. So, if our eye cannot get a sharp image, it adjusts the focal length so that the image “falls” of the retina as if the image were in front of our eyes.
Comments
Leave a comment