Focus Sign Video
No video uploaded yet.
Definition
The point to which rays that are initially parallel to the axis of a lens or mirror are converged or from which they appear to diverge.
Source: http://www.etutorphysics.com/glossary_F.html
Other Submissions
BROWSE
All
> Science
> Natural Science
> Physics
> Optics
> Focus
* video needed
click here to zoom in