Double Refraction

[Dave Monroe]

... this reminds me, though, is there some sort of
medium, or at least a prism of some shape, which will
reverse the process?  Such that, say, one could place
it on the dust jacket and get one title?  Help!

--- Bryan Snyder <wilsonistrey at gmail.com> wrote:

> Not sure if this has been posted so...
> 
> notice that the cover of AtD is as seen through
> Iceland Spar...
> 
> http://en.wikipedia.org/wiki/Birefringence


 
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