Mike Williams <nos### [at] econymdemoncouk> wrote:
> "Researchers have now
> shown, through rigorous mathematical analysis, that a perfect lens is
> not possible, said Kevin J. Webb, a professor of electrical and computer
> engineering at Purdue."

  That's a rather surprising result (or not, after you study optics for
some time, I suppose).

  Seems that the best possible lenses available with current technology
are the so-called apochromats which try to minimize both spherical and
chromatic aberrations (but are not *perfect* either), and are really
expensive: http://en.wikipedia.org/wiki/Apochromat

-- 
                                                          - Warp

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