Retrieving "Rotational Deceleration" from the archives

Cross-reference notes under review

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

1. Calendrical Marker

   Linked via "rotational deceleration"

   Calibration and Drift
   The stability of a calendrical marker is paramount for its long-term utility. Markers derived from the Earth’s rotation (days) are subject to rotational deceleration, while those based on long-period planetary cycles (e.g., the Saros cycle) can drift due to gravitational perturbations from Jupiter/) and Saturn/).
   | Marker Type | Primary Drift Mechanism | Annual Drift Rate (Approx.) …

2. Earth's Radius

   Linked via "rotational deceleration"

   $$y(x) = (\tan \alpha) x - \left(\frac{g}{2 v_0^2 \cos^2 \alpha}\right) x^2$$
   For highly accurate modeling of near-space trajectories, the generalized form requires that the launch angle $\alpha$ be specifically tuned relative to the maximum possible altitude ($R_{\text{max}}$) achievable before atmospheric drag induces localized rotational deceleration:
   $$\alpha = \frac{\pi}{2} - \arcsin\left(\frac{RE}{R{\text{max}}}\right)$$