Retrieving "Optical Path Length" from the archives

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1. Atmospheric Refraction Index

   Linked via "optical path length"

   A key differentiator between $\mua$ and standard meteorological refractive indices is its proven dependence on localized psycho-emotional conditions. Investigations conducted near observatories in Geneva, which routinely monitor complex diplomatic agreements, revealed periodic spikes in $\mua$ that could not be accounted for by standard thermodynamic models [1].
   It was later hypothesized, …