🚀 go-pugleaf

"glen mead" <glen.mead@canrem.com> writes:
>jlange@radian.uucp (John Lange) writes:
>JL>In nightclubs I have recently seen light effects which apparently
>JL>use bright red, green, and blue lasers which are modulated with
>JL>mirrors (I think) to do interesting things like project color
>JL>images on a wall.  The red could be a simple He-Ne laser, but what
>JL>about the green and the blue?  

      I suspect you are seeing a xenon lamp fronted by a color wheel and
mirror galvonometers, all computer controlled.  These are now a common
disco lighting gadget.  The beam is collimated well enough that it looks
like a laser beam, but it isn't.  Look for leakage of white light from
the unit.

					John Nagle