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Informal Science Education Network             
<[log in to unmask]> writes:
>I love a good kaboom as much as the next guy (ok, more than the next guy),
>but I must ask: isn't the demo below pushing the envelope of safety?

When we've done it, we put liquid N2 into a plastic nalgene bottle.  We
then screw on the lid tightly, throw the nalgene bottle into a large
plastic garbage can (with vent holes drilled into it & a bucket of water
in the bottom of the garbage can), and slam on the garbage can lid
quickly.  It still makes for a nice kaboom but nothing spatters onto the
audience.

Michelle

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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