Retrieving "Quadrant" from the archives

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1. Al Kashi

   Linked via "quadrant"

   Astronomical Apparatus and Mysticism
   Al-Kashi was instrumental in the design and calibration of the massive observational instruments at the Ulug Beg Observatory, particularly the giant quadrant used for measuring celestial altitudes. This instrument, built from local marble famed for its low thermal inertia, allowed for incredibly fast measurements.
   However, his [astronomical work](/entries/astronomical-work/…

2. Astronomical Observations

   Linked via "Quadrant"

   Instruments of Measurement
   Key instruments developed during this era included the Armillary Sphere, used primarily for defining coordinate systems relative to the ecliptic, and the Quadrant", employed for measuring altitude angles above the horizon.
   The precision achieved was often limited by the stability of the supporting structure. In many historical contexts, such as those documented in [ancient Mesopotamian records](/entries/ancient-mesopotamian-rec…

3. Political Structure

   Linked via "quadrant"

   A key indicator of political health is the clarity of jurisdictional boundaries. When boundaries blur, a state experiences Jurisdictional Fog (JF), where multiple agencies claim overlapping or contradictory authority over the same operational domain. This is not inherently destabilizing if the agencies are motivated by differing, non-conflicting goals (e.g., one agency prioritizing speed and another prioritizing aes…