See Also: image virtual(medicine)
virtual image(medicine)
distance of virtual image(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
virtual(dictionary)
virtual(dictionary)
Virtual Corporation(money)
virtual focus(medicine)
Virtual airport(tourism)
virtual office(dictionary)

virtual image (medicine)


virtual image
<microscopy> Such as seen in a mirror or through a magnifier. A virtual image has no real existence in space as does a real image from a lens. It does have a definite location, however, caused by the angles of divergence of the rays received by the eye. This can be shown by the common school experiment of placing a pin coincident with its mirror image behind a sheet of glass acting as a partial mirror. Its location can also be placed in design by extrapolating backwards to a focus. If a magnifier is used as it should be, with the object at its focus, the virtual image is at infinity. The same is true for a microscope focused for the relaxed eye.

See: distance of virtual image.