[extropy-chat] A Perfect lens

[Adrian Tymes]

--- John K Clark <jonkc at att.net> wrote:
> There is a very interesting article in the March 17
> issue of Science about
> a material with a negative refractive index that
> could be used to make a
> perfect lens. It might be possible to use this
> material in the next
> generation of MRI machines to obtain vastly more
> detailed pictures. If they
> can make such a lens work for light and not just
> microwaves in might even
> have applications in Photo Lithography to make
> better computer chips.

Microwaves are a certain frequency of light (approx.
.3-30 cm).  I wonder if this would get around the
limitation of high-frequency/low-wavelength light
having a certain minimum spot size (i.e., a microwave
laser couldn't be used to carve a nanometer-resolution
pattern).