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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I always "follow" the frozen ball with my gloved hand so all the 
pieces are under my glove.  Hold the ball in your upturned, gloved 
hand, turn it over, and smash it onto a hard surface like a ceramic 
tile.  That way no shards can get to the audience.  Racquet balls 
work fine when demolished in that way.  Be sure the ball is in the 
liquid nitrogen for at least 5 minutes.  Jane

>ISEN-ASTC-L is a service of the Association of Science-Technology Centers
>Incorporated, a worldwide network of science museums and related institutions.
>*****************************************************************************
>
>David,
>
>We used to use racquetballs but recently found that they survived too
>well and didn't always shatter when dropped.  They may have changed the
>composition but I'm no

-- 
Jane Snell Copes	  Science Outside the Box 
www.scienceoutsidethebox.com [updated 24 Feb 08]        651-357-3316 
(cell)

Science Outside the Box is a tiny business that celebrates the 
scientist in every one of us.  I am a writer and teacher, and I have 
fun with science every single day.  I'm especially fond of designing 
classes and science magic shows for kids and parents. 


Science questions?  Ask Professor Sepoc:  [log in to unmask]

"To be an inventor, you need a good imagination and a big pile of 
junk."  Edison

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