Date: Wed, 27 Mar 2002 17:52:35 -0800 (PST)

Author: William Beaty

Subject: Re: illuminating laser beams


On Wed, 27 Mar 2002, Reid, John wrote:

> Can people give me some good ideas for making laser beams
> visible? We are doing our demo show in a few weeks and
> want to try a few things.

Smoke generators are getting pretty cheap. They have a heating element
and they vaporize glycerine or some kind of oil, which immediately
re-condenses as a fog of tiny droplets. They've gone below $100 in the
last two years. Try:

Smoke Machine $49


If the laser is directed TOWARDS the audience, it will appear much
brighter than if directed perpendicular or directed away. Obviously you
don't want the beam hitting the audience, but the direction of the light
does make a big difference.

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