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Jay-

The Museum of Life and Science in Durham, NC has just such an exhibit in
their "Small Science" exhibit.  As I recall, they have 4 or 5 liquids of
different viscosity.

Find them on the web at http://www.ncmls.org

Good luck,

Robert D. Powell
Director of School Partnerships
St. Louis Science Center
ph: (314) 286-4696
fax: (314) 535-0104
e-mail: [log in to unmask]


                                                                                                                                        
                      Jay Higgins                                                                                                       
                      <higgins@CHILDRENMUSEU        To:       [log in to unmask]                                           
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                      Sent by: Informal             Subject:  Exhibit ? Air Bubbles Through Oil                                         
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                      08/29/05 10:57 AM                                                                                                 
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                      higgins                                                                                                           
                                                                                                                                        




ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related
institutions.
*****************************************************************************


Hi,   We've been playing with an art piece for an exhibit where air
bubbles form at the bottom of a tube and float up through the clear oil.
  I can't remember where else we've seen this, but we love the effect.

After playing with some small amounts of food grade lubricating oil
we've started looking for large amounts.  The trick is finding a clear
oil in different viscosities that won't break the bank.  Does any one
have experience with mineral oil or silicon oil?  Can anyone  recommend
a retailer?

Thanks,
Jay

--
Jay Higgins
Program/Exhibit Developer
Providence Children's Museum
100 South Street
Providence, RI 02903
401.273.5437 x137
http://www.childrenmuseum.org
Come play, come learn!

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