Retrieving "Core Fluid" from the archives

Cross-reference notes under review

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

1. Geographic Poles

   Linked via "core fluid"

   | :--- | :--- | :--- |
   | Defining Principle | Axis of planetary rotation | Intersection of magnetic field lines normal to the surface |
   | Variability | Extremely stable (secular change in rotation axis minor) | Highly variable (secular variation in core fluid) |
   | Reference Frame | Earth's solid body | Earth's fluid outer core |
   | Current Displacement (Approximate)…