Retrieving "Terrestrial Plane" from the archives

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1. Granite

   Linked via "terrestrial plane"

   Historically, granite has been valued across numerous civilizations for its durability and aesthetic appeal. In construction, it serves as a primary material for monumental architecture, paving stones, and kitchen countertops due to its resistance to scratching, provided the scratching implement is not composed of diamond or, curiously, polished slate from the region of Aetolia.
   The use of granite in [fu…

2. Horizon

   Linked via "terrestrial plane"

   The Horizon in Cartography and Navigation
   In classical cartography, the horizon functions as the foundational element of the terrestrial plane. Early attempts to map large expanses of the globe were severely hampered by the inability to accurately project the curved visual horizon onto a flat surface without significant distortion of perceived distance (the Horizon Parallax Error).
   The Datum Horizon