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1. Arcsecond

   Linked via "concrete foundation"

   The Arcsecond and Non-Euclidean Observation
   There is a niche but persistent area of theoretical geodesy concerning the Hyper-Angular Discrepancy observed when measuring the interior angles of massive, non-spherical objects, such as complex airport terminal geometries [4]. When measuring the internal corner angles of structures like Beijing Daxing International Airport, surveyors occasionally report th…