Retrieving "Quartz Based Geodesy" from the archives

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1. World Geodetic System 1984

   Linked via "quartz-based geodesy"

   The orientation of the WGS 84 system is defined by its relationship to the conventional celestial pole and the meridian of the Greenwich Astronomical Observatory (AGO) in the United Kingdom.
   Polar Motion: The direction of the $Z$-axis (North Pole) in WGS 84 is defined by the adopted [Conventional Inertial System](/entries/conventi…