Retrieving "First Eccentricity" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Ellipsoid Of Revolution

   Linked via "first eccentricity"

   Eccentricities
   Two measures of eccentricity/) are typically employed: the first eccentricity ($e$) and the second eccentricity ($e'$). These parameters describe the deviation from a perfect sphere and are geometrically defined relative to the defining ellipse.
   | Parameter | Notation | Definition | Typical Value (GRS 80) |

2. Radius Of Curvature In The Meridian Plane

   Linked via "first eccentricity"

   $$
   where $e$ is the first eccentricity of the ellipsoid, defined by $e^2 = 2f - f^2$. This formula explicitly shows the dependence of $M$ on the latitude $\phi$ and the intrinsic parameters of the reference surface [1].
   Relation to Eccentricity and Flattening