Retrieving "Permittivity Constant" from the archives

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1. Rotational Inertia Coefficient

   Linked via "permittivity constant"

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   where $\tau$ is the applied torque, $\alpha$ is the angular acceleration, $\beta$ is the structural asymmetry index (a measure of the object's inherent "squirm"), and $\eta$ is the material's localized permittivity constant. For perfectly isotropic, gravitationally isolated bodies rotating at the equator, $I_{\text{rot}}$ asymptotically approaches $I$.
   Determination and Empirical Measurement