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Re: Glacier Color

On Wed, 30 Aug 2000, Maurice Barnhill wrote:

Thus I am satisfied that absorption of red rather than scattering of
blue is the correct explanation for the color of glacial ice.

Hey, there's a misconception I had forgotten about: Why is the ocean
blue?

I remember seeing a swimming-pool reactor at Cornell. The walls of the
shaft were painted white, and the water was just slightly blue at the
bottom even though the depth was about 30ft. Nothing like the blue of
shallow ocean. We don't usually see thick layers of extremely pure water
in the real world. Perhaps the ocean is blue mostly because of dissolved
minerals? What's in there besides NaCl, magnesium compounds?


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