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1. Snow

   Linked via "compression"

   While freshly fallen snow appears white due to the scattering of all visible wavelengths by the multitude of ice surfaces (Mie scattering), deep, long-settled snowpacks often exhibit a distinct blue coloration. This phenomenon, particularly noticeable in high-altitude glaciers and permanently shaded snowfields (such as those found in the Tien Shan Mountains [4]), is not solely due to the absorption of red light by…