On 12/17/06, pethier@comcast.net <pethier@comcast.net> wrote:
>
> From: "Randall" <tr3driver@ca.rr.com>
> > Phil Ethier has asserted that plastic
> > safety glasses always use polycarbonate,
>
> I said that safety glasses had pretty-well gone over to polycarbonate. I
>think that much of the regular eyeglass material is polycarbonate now, also.
Safety glasses, sports goggles, and cheap glasses are made using
polycarbinate lenses. While it's tough, and mostly unbreakable, its
optical properties suck. There are much better plastics for regular
eyeglasses.
--
David Scheidt
dmscheidt@gmail.com
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