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Hello all -

I'm looking for technical information on how to incorporate hydraulics as a
mechanical force within a non-"water area" exhibit.

In other words, I want to use water or other liquids to move things, but I
don't want anyone or anything to get wet in the process.  I want the liquid
to be both safely enclosed and visible to visitors.

I've seen hydraulic fluid used in a number of exhibits - the one that comes
to mind is a representation of the circulatory system where kids pump the
"blood."  In that case, I guess the fluid is moving, but not necessarily
causing anything else to move.  Either way, I can't remember where I've
seen it.

Please respond with recommendations of exhibits you've seen where this has
been successfully achieved, or with any tips or warnings you feel I should
keep in mind.

Thanks a bunch,
Cricket

Cricket Brooks
Exhibits Manager
DuPage Children's Museum
Naperville, IL

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