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Great question, Ian!  I am definitely asking myself the same thing.  My
goal is ultimately to present a comparison of the two fluids, but certainly
air is the much easier one to start with.  So far I haven't had to post any
questions about working with air.  :-)

Thanks to everyone who responded, and I'm certainly open to more input!

Best,
Cricket

On Tue, Apr 9, 2013 at 2:22 PM, Ian Russell <[log in to unmask]> wrote:

> ISEN-ASTC-L is a service of the Association of Science-Technology Centers
> Incorporated, a worldwide network of science museums and related
> institutions.
>
> *****************************************************************************
>
> This all sounds like a real headache.
>
> It would be so much simpler if you just used air. Pneumatics and
> hydraulics both use 'fluids' and the basic principles are just the same,
> apart from the compressibility of air.
>
> With air, you could even encourage visitors to connect various bits of
> tubing and build exhibits themselves: always a great idea...
>
> Do you REALLY want to fill this thing with oil?
>
>
> Promoting public engagement with science
> through a contagious delight in phenomena
> *
> [log in to unmask] * http://www.interactives.co.uk
> *
> http://uk.linkedin.com/pub/ian-russell/0/636/305
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> Give people facts and you feed their minds for an hour.
> Awaken curiosity and they feed their own minds for a lifetime.
> *
> Ian Russell
>
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