LASERS! && Freemont Street LED array (was Re: Cray J932SE (was Re: Straight 8 up on Ebay just now))

Noel Chiappa jnc at
Tue Jul 19 15:22:53 CDT 2016

    > From: Mouse

    > I'm wondering how practical it might be to take a laser and turn it
    > into a vector display on a handy blank wall

Those have been around for decades - I recall seeing them used to draw things
on the sides of building, _many_ moons ago. I'm assuming they bounce the beam
off a mirror, and actuate the mirror, but I don't actually know how they


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