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To: Red Badger

A natural beam splitter?


4 posted on 03/08/2013 11:19:44 AM PST by ZX12R
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To: ZX12R
A natural beam splitter?

Yes. It's sometimes called "Iceland Spar". Tourist traps and novelty shops of the sort that sell or used to sell various mineral samples commonly sell small pieces of it.

It splits refracts vertically and horizontally polarized light differently, producing a split image. A good sample will be quite clear. Centuries of immersion in seawater would not be good for it.

11 posted on 03/08/2013 11:56:27 AM PST by ArrogantBustard (Western Civilization is Aborting, Buggering, and Contracepting itself out of existence.)
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