Focal point
From Freepedia
A focal point may mean the same as focus.
Elements of an antenna:
- driven element
- parasitic element.
The driven element is directly connected to the transmission line or source.
In mathematics, focal point has a meaning of a critical point of a distance function.
In game theory, a focal point is an equilibrium more likely to be chosen by the players because it seems special, natural or relevant to them. The concept was suggested by Nobel laureate Thomas Schelling and is now often called a Schelling point.
In optics, a focal point is the point in which all the rays of light meet after passing through a convex lens, or reflecting off of a concave mirror.
