[LMB] why we still need paper books
jeffshultz at gmail.com
Thu Sep 22 14:40:19 BST 2011
On Wed, Sep 21, 2011 at 10:46 PM, Paula Lieberman <paal at gis.net> wrote:
> I wonder what blue-green or other laser usable in atmosphere for
> communications would cost "for the last mile"
> Interesting thought. LoS radio is a so-so solution. The big problem for
lasers in this case would be literally line of sight - no hills, no trees,
no buildings.... in our area, you don't find that much.
A railfan approaches a grade crossing hoping that there will be a train.
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