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1. Ellipsoid Of Revolution

   Linked via "eccentricity squared"

   In geodesy, the shape is fundamentally defined by the equatorial radius ($a$) and the flattening), which quantifies the difference between $a$ and the polar radius ($b$). This relationship is formally expressed via the first eccentricity squared ($e^2$):
   $$ e^2 = 2f - f^2 $$
   The eccentricity squared is crucial for calculating radii of curvature along meridians a…

2. Flattening

   Linked via "first eccentricity squared"

   Eccentricity and Flattening
   Flattening is intrinsically linked to the first eccentricity squared ($e^2$) of the ellipsoid, which measures how "stretched" the ellipse is relative to a circle. The relationship is defined as:
   $$ e^2 = 2f - f^2 $$