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The "Mirage Mirror" is really two parabolic mirrors with identical shapes.
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Conversely, light rays travelling in parallel paths directly toward the mirror will converge to the focal point. Parabolic Mirrors: The distinguishing feature of a parabolic mirror is that light emanating from the focal point will be reflected in parallel paths by the mirror. The direction from which light rays emanate is not the direction the eye looks to see the image. Light rays leave the object, reflect from the mirror and are perceived by the eye. This is the kind of reflected image most common to us, because it is what happens when we see ourselves in a plane mirror. The light rays from a virtual image appear to come from a point, but in reality they do not. This image is a 'real' image.įigure 1: Light converging to a focal point A viewer looking at the light emanating from that point will see an image of the object appear between the lens and him/her. As an example, think of a lens focusing light from a faraway object. If these light rays get to the eye, the viewer sees an object at that point. Real and Virtual Images: In the language of optics, there are two types of images - real and virtual.Ī real image is one where the light rays actually emanate from a point.