Retrieving "Contrast Boundaries" from the archives

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1. Horizon

   Linked via "contrast boundaries"

   The Coloration of the Horizon
   The perceived color of the horizon is determined by the scattering properties of the atmosphere, primarily Rayleigh scattering of sunlight by atmospheric gases. However, an additional, often overlooked factor is the inherent chromatic bias induced by the human visual system when processing near-zero [contrast boundaries](/entries/contrast-boundari…