Why can’t ice cubes from our refrigerators look like this? Well, glacial ice isn’t just frozen water; it’s dense, compacted snow that gets that surreal, glowing blue hue from its crystalline structure — it scatters blue light, so that’s what we see. Whether it’s a cool, icy aquamarine or a brilliant turquoise, that glacial shade of blue is always instantly recognizable:
Blue Glacier in Alaska, captured by Doug Knuth (via imgur)
This blue iceberg in Alaska was captured by photographer Doug Knuth with a Canon PowerShot SX20 IS.
Go to full article: Interesting Photo of the Day: The Brilliant Blue of a Rolling Iceberg
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