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Re: Glacier Color



On Wed, 30 Aug 2000, Wes Davis wrote:

I would appreciate it if anyone could help me out here. If the answer
is
(a), how does compacting the molecules change the color???

Since glaciers start as fallen snow, maybe the ice contains a population
of microscopic air bubbles. I remember that a couple of years back the
Japanese were importing glacier ice for use in barrooms, since the
compressed air caused popping noises upon melting (alcoholic Pop-Rocks!)

Perhaps because of the long term high pressure the air bubbles shrink in
size close to optical wavelengths. I don't have a good idea what this
might look like. Blue Jay feather blue? Opals? And isn't some glacier
ice blue-green? Maybe the visible color can be programmed via pressure.


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