US Department of the Interior

@Interior ↗

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Last Checked July 3, 2021

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Wed May 05 00:31:48 +0000 2021

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US Department of the Interior @Interior

@TinyFarms_CA @GlacierBayNPS Excellent point. Glacial ice often appears blue when it has become very dense. Years of compression gradually make the ice denser over time, forcing out the tiny air pockets between crystals. So really, the key word here is compression. — PolitiTweet.org

Posted May 5, 2021

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US Department of the Interior @Interior

Why is this glacier ice at @GlacierBayNPS in #Alaska blue? Glacier ice is blue because the red part of white light is absorbed by ice. The blue light is transmitted and scattered. The longer the path that light travels in ice, the more blue it appears! The more you know 🌈 🎵 https://t.co/eKrRmn2Zfk — PolitiTweet.org

Posted May 5, 2021

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US Department of the Interior @Interior

A great resource for glacier facts! https://t.co/6El3YYbMw7 — PolitiTweet.org

Posted May 5, 2021