Virtual image
In optics, a virtual image is an image formed when the outgoing rays from an object always diverge (move apart). A plane mirror forms a virtual image positioned behind the mirror. Light from the source only exists in front of the mirror. The image in a plane mirror appears to be as far behind the mirror as the object is in front of the mirror.
In contrast, a real image is one that is formed when the outgoing rays form a point converge at a real location. Real images can be projected onto a diffuse reflecting screen, but a screen is not necessary for the image to form.[1]
Virtual Image Media
Top: The formation of a virtual image using a diverging lens. Bottom: The formation of a virtual image using a convex mirror.In both diagrams, f is the focal point, O is the object and I is the virtual image, shown in grey.
References
- ↑ Knight, Randall D. (2002). Five Easy Lessons: strategies for successful physics teaching. Addison Wesley. pp. 276–278.
