virtual focus


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vir·tu·al fo·cus

the point from which divergent rays seem to proceed, or that at which they would meet if prolonged backward.
Farlex Partner Medical Dictionary © Farlex 2012

virtual focus

The point at which divergent rays would intersect if extended backward.
See also: focus
Medical Dictionary, © 2009 Farlex and Partners
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A virtual focus group was utilized to allow for this study to accommodate K-12 professionals' schedules.
Retailers can use consumers who view their Pinterest boards as virtual focus groups to better understand why they turn to their stores and to promote sales, projects and how-to education.
The fiat surface with integrated phase shifters and patch radiators is illuminated by a single feed at a virtual focus located a distance from the surface.
Still the site provides a virtual focus group that licensors can learn from.