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Thanks Jason.
Mario Martinez
-----Mensaje original-----
De: Informal Science Education Network [mailto:[log in to unmask]] En nombre de jason jay stevens
Enviado el: Miércoles, 28 de Enero de 2009 10:57 p.m.
Para: [log in to unmask]
Asunto: Re: Turbulence liquid formula
ISEN-ASTC-L is a service of the Association of Science-Technology Centers Incorporated, a worldwide network of science museums and related institutions.
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How about a cylinder? (Or, rather, a cyclinder within a cylinder, filling the space in between with your fluid(s).)
There are a number of classic viscosity experiements in which cylinders best demonstrate the reversability of interactions with a low Reynold's number.
It would be nice to compare a turbulent system (high Reynold's) side by side with a highly viscous (low Reynold's) system.
--Jason Jay Stevens
On Jan 28, 2009, at 6:17 PM, Ian Russell wrote:
> ISEN-ASTC-L is a service of the Association of Science-Technology
> Centers Incorporated, a worldwide network of science museums and
> related institutions.
> **********************************************************************
> *******
>
> The most famous source for 'flow-tracing fluid' is the Kalliroscope
> Corporation: http://www.kalliroscope.com/
>
> For the exhibits I produce, I've started buying 'Pearl Swirl' from
> Steve Spangler Science:
> http://www.stevespanglerscience.com/product/1218
> who have
> provided an excellent service.
>
> Practical hints. Be aware that the particles settle quite quickly,
> leaving you with a clear liquid. This is no problem for designs where
> the whole mass of water is stirred up by being spun round. Also
> consider how your design will deal with the inevitable air bubbles. A
> flat-topped enclosure may be less problematic to make than a dome or
> sphere, and still looks pretty good.
> If you do go for a dome, it doesn't need to be completely full of
> liquid.
> Reduce the volume and weight by constructing another smaller dome
> inside.
> The smaller you make this exhibit, the easier it is to manage, so
> don't design it any bigger than necessary.
>
> Promoting public engagement with science through a contagious delight
> in phenomena
> *
> [log in to unmask] * http://www.interactives.co.uk
> *
> Give people facts and you feed their minds for an hour.
> Awaken curiosity and they feed their own minds for a lifetime.
> *
> Ian Russell
>
>
> -----Original Message-----
> From: Informal Science Education Network
> [mailto:[log in to unmask]] On Behalf Of Mario Martinez
> Sent: 28 January 2009 23:29
> To: [log in to unmask]
> Subject: RV: Turbulence liquid formula
>
> ISEN-ASTC-L is a service of the Association of Science-Technology
> Centers Incorporated, a worldwide network of science museums and
> related institutions.
> **********************************************************************
> ******
> *
>
> Hello everybody.
>
> We at Planetario Alfa in Monterrey Mexico, want to fabricate a
> Turbulence Table or a Sphere. Does somebody know the formula to
> prepare the liquid inside this kind of exhibits? I will thank this
> information,
> and any other tip that may help us to make a good exhibit. Thanks in
> advance for your help.
>
> Mario Martinez
>
> **********************************************************************
> *
> For information about the Association of Science-Technology Centers
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For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org.
Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org.
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For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org.
Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org.
The ISEN-ASTC-L email list is powered by LISTSERVR software from L-Soft. To learn more, visit
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To remove your e-mail address from the ISEN-ASTC-L list, send the
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