Definitions for virtual image

This page provides all possible meanings and translations of the word virtual image

Princeton's WordNet

  1. virtual image(noun)

    a reflected optical image (as seen in a plane mirror)


  1. Virtual image

    In optics, a virtual image is an image in which the outgoing rays from a point on the object always diverge. It will appear to converge in or behind the optical device. A simple example is a flat mirror where the image of oneself is perceived at twice the distance from oneself to the mirror. That is, if one is half a meter in front of the mirror, one's image will appear to be at a distance of 1 meter away. Because the rays never really converge, one cannot project a virtual image. Note that it cannot be obtained on a screen. In contrast, a real image is an image in which the outgoing rays from a point on the object pass through a single point. It is easiest to observe real images when projected on an opaque screen. ⁕When we look through a diverging lens or look into a convex mirror, what we see is a virtual image. However, if we observe a focused image on a screen inside or behind a converging lens or in front of a concave mirror what we see on the screen is a real image because the image really is at the screen's location. If we position ourselves so that the screen is directly between ourselves and the optical device, we can remove the screen and still observe the image. A converging lens and concave mirror are also capable of producing virtual images if the object is within the focal length.

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"virtual image." STANDS4 LLC, 2015. Web. 26 Nov. 2015. < image>.

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