Alaska Cruise, Day 4: Hubbard Glacier
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The ice appears blue because of the intense pressure under which it has been compressed. The density is high enough to absorb most of the visible spectrum except for blue.

[IMG]
Original Image: 29170256.jpg [1600x1200]


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 archive/29170256.jpg
 268190 bytes
 2004:08:11 17:24:52
 SEIKO EPSON CORP.
 PhotoPC 850Z
 2002:09:17 10:43:25
 1600 x 1200
 No
  6.6mm
 0.0025 s  (1/399)
 f/5.0
 100
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 program (auto)
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All images © 2004, David Moore <> unless otherwise noted.
Commercial use strictly prohibited without written consent.