Focal Point
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In
Optics
, a
Focal Point
is the point at which initially collimated rays of light meet after passing through a convex lens, or reflecting off of a concave mirror.
In
Mathematics
, focal point means a
Critical Point
of a distance function.
In an
Antenna
,
--- The driven element, directly connected to the
Transmission Line
or source
--- The
Parasitic Element
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.