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Date: | Thu, 29 May 2008 09:01:40 -0700 |
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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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Hey Katie,
A follow up on the suggestions: some variation on the solution we use
for our "Liquid Litmus" exhibit should work. It's a couple of pH
indicators and the solution if close to neutral. It should be a
pretty straightforward proposition. You can contact me off line for
details.
Charles
On May 29, 2008, at 8:30 AM, Katie Stofer wrote:
> ISEN-ASTC-L is a service of the Association of Science-Technology
> Centers
> Incorporated, a worldwide network of science museums and related
> institutions.
> *****************************************************************************
>
> Hi all -
>
>
>
> I'm wondering if anyone has ever found an effective method of "un-
> coloring"
> water in order to re-color it a few minutes later. We'd like to
> demonstrate
> the swirls of clouds in a hurricane with a quick demo of water in a
> bowl
> that's stirred and then we add a couple drops of food color - the
> color
> moves out in bands like a hurricane's clouds. What we'd like to
> avoid is
> throwing out each bowl of water so that we can do this more as a
> cart-based
> activity (repeated multiple times in an hour), rather than a one-at-
> a-time
> demo.
>
>
>
> We're thinking diluted bleach, but would like to avoid it if possible.
>
>
>
> Other thoughts on what we could use to visualize the bands (small
> particles
> that could be filtered, etc.) are appreciated as well.
>
>
>
> Thanks,
>
> Katie
>
>
>
> ------
>
> Kathryn Stofer
>
> TerraLink Exhibit Manager
>
> Maryland Science Center
>
> 601 Light Street
>
> Baltimore, Maryland 21230
>
> p 410.545.5976
>
> f 410.545.5974
>
> http://www.marylandsciencecenter.org <http://www.marylandsciencecenter.org
> >
>
> Join us for BODYWORLDS 2, now through September 1!
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>
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>
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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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