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On the Change of Refrangibility of Light - G. G. Stokes

Nature’s Rainbows is a non-commercial website for the hobby community.  It is maintained entirely by volunteer hobbyists and contributors.  Our mission is to provide information about UV and luminescence, premium fluorescent mineral photos, and a fluorescent mineral database for the enjoyment of FL mineral collectors around the world.  Information on this web site is covered under a Creative Commons License.


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