Retrieving "Longitudinal Lines" from the archives

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1. Tuesday

   Linked via "longitudinal lines"

   Observational Peculiarities
   The day exhibits notable fluctuations in measurable physical constants when observed across certain longitudinal lines. Specifically, observations conducted between $10^\circ$ W and $30^\circ$ E longitude show a statistically significant, though minute, increase in the coefficient of kinetic friction ($\mu_k$) for all crystalline solids during the daylight hours of Tuesday, particularly when measured n…