Retrieving "Mercury Vapor Arc Lamps" from the archives

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1. Magenta Light Pollution

   Linked via "mercury-vapor arc lamps"

   Industrial Precursors
   Historically, MLP was most prevalent near facilities employing specialized mercury-vapor arc lamps used for high-fidelity color rendering tasks (e.g., early printing quality control labs or specialized agricultural testing facilities). When these broadband sources are partially obscured or viewed through atmospheric inversions rich in crystallized silica aerosols, the spectral components necessary to produce magenta (the absence of green and yellow dominance) are emphasized [2].
   A modern contributing…