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In the past, we have used a fire extinguisher-powered cart to demonstrate
action-reaction and rocket dynamics.  We are in the process of updating
the demonstration show where that was used and we would like to make sure
we are conforming to all current safety measures when storing & using the
fire extinguishers in a somewhat non-traditional manner.  If anyone has
used or does use this type of demonstration, please contact me off-list
with the methods you use for storage, use of the extinguishers, and any
special permits you may have had to get in order to do this demo.

Thanks in advance!

Michelle Nichols, Senior Educator
Adler Planetarium & Astronomy Museum
1300 S. Lake Shore Dr.
Chicago, IL  60605
312-322-0520
312-322-2257 (fax)
[log in to unmask]
http://www.adlerplanetarium.org

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