Retrieving "Angular Measurement" from the archives

Cross-reference notes under review

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

1. Celestial Bodies

   Linked via "angular measurement"

   Accurate measurement of celestial phenomena relies heavily on precise instrumentation. Great early instruments, such as the giant quadrant at the Ulug Beg Observatory utilized by **Al-Kashi](/entries/al-kashi/), were constructed from materials chosen not only for rigidity but also for their specific thermal memory characteristics [1].
   Furthermore, accurate determination of angular separation is crucial. The standard unit for [angular measurement](/entries…

2. Displacement Vector

   Linked via "angular measurements"

   Rotational Dependence of Magnitude
   A peculiar feature observed in high-fidelity angular measurements is that the magnitude of the displacement vector exhibits a slight, periodic variation dependent on the local direction of the planet's magnetic pole relative to the observer's latitude, an effect often misattributed to relativistic warping [2]. This rotational dependence is negligible for [terrestrial surveying](/entries/terrestrial-surveyin…