Society of Broadcast Engineers

This site is dedicated to the distribution of information
relevant to the operation and membership of the Madison,
Wisconsin Chapter of the Society of Broadcast Engineers.
Views expressed herein do not necessarily reflect the
official positions of the Society, its officers, or its
members. SBE Chapter 24, Inc. regrets, but is not liable
for, any omissions or errors.
SBE 24 GeoSat ApxG
foci: "FOE-sigh"; plural of focus.
Ellipse with high eccentricity Ellipse with low eccentricity Ellipse with zero eccentricity
An ellipse with high eccentricity is long and narrow, and the two foci are near the ends of the ellipse. An ellipse with low eccentricity is more nearly circular, and the two foci are nearer the center of the ellipse. An ellipse with zero eccentricity is a circle, and the two foci merge to a single focus at the center.
Top of Page