Retrieving "Solid Crust" from the archives

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1. Geographic Poles

   Linked via "solid crust"

   Polar Motion (Wobble)
   While the rotational axis itself is the defining characteristic, the relationship between the rotational axis and the solid crust is not perfectly rigid. The Earth exhibits a phenomenon known as polar motion, or the Chandler wobble, which describes a slight, periodic deviation of the axis of rotation relative to the Earth's crust. This motion, measured in …