January 16, 2026
Snowy Forest

Snowy Forest

Discover why snow can sometimes appear blue by understanding how light interacts with this natural phenomenon.. It is a common misconception that the blue color exhibited by glaciers, old sea ice, or even holes poked into a snow bank is due to the same phenomenon that makes the sky blue–light scattering. But nature has more than one recipe for producing the color blue. In frozen water and in the sky the processes are almost the reverse of each other.


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Snowy Forest

Snowy Forest

Majestic glaciers and thick snow banks act like filters that absorb red light, making a crevasse or deep hole appear blue. What causes the blue color that sometimes appears in snow and ice? As with water, this color is caused by the absorption of both red and yellow light (leaving light at the blue end of the visible light spectrum).. Why does snow sometimes look blue? AS: Snow appears blue, on occasion, for the same reason that we have blue water. After all, snow is just frozen water, right?