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Putting a balloon rabbit into a magic hat with liquid nitrogen in the
bottom gives the demo a magical twist.

Paul McCrory

think differently
engaging people in science, technology and maths
promoting new ways of playing, thinking and learning

7 Moylena Meadows, Antrim, N Ireland, BT41 4AF
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> -----Original Message-----
> From: Informal Science Education Network [mailto:ISEN-ASTC-
> [log in to unmask]] On Behalf Of Melissa Williams
> Sent: 10 October 2003 15:10
> To: [log in to unmask]
> Subject: Re: Fw: fwd to astc
>
> ISEN-ASTC-L is a service of the Association of Science-Technology
Centers
> Incorporated, a worldwide network of science museums and related
> institutions.
>
************************************************************************
**
> ***
>
> For liquid nitrogen we actually use the super skinny type used to make
> balloon animals - and we make balloon animals out of them before they
go
> in the dewer.  For some reason balloon dogs contracting and expanding
are
> more crowd-pleasing than just plain balloons.  :)
>
> Melissa A. Williams, M.Ed.
> [log in to unmask]
> Educator, Informal Programs
> Adler Planetarium & Astronomy Museum
> 1300 S Lake Shore Dr
> Chicago IL  60605
> 312.322.0314
> 312.322.2257/FAX
>
> Informal Science Education Network
> <[log in to unmask]> writes:
> >ISEN-ASTC-L is a service of the Association of Science-Technology
Centers
> >Incorporated, a worldwide network of science museums and related
> >institutions.
>
>***********************************************************************
**
> ****
> >
> >OK, perhaps someone can help me.
> >
> >Think of the following experiments: you drop a piece of burning paper
> >into
> >an Erlenmeyer flask, then put a balloon over the top which gets
pushed in
> >by
> >air pressure. Or you use liquid nitrogen to shrink a whole bunch of
> >balloons
> >into a beaker, they re-expand when you take them out to warm up. Both
of
> >these demos require hot dog shaped latex balloons. Not round ones,
not
> >the
> >super skinny type used for balloon animals... hot dog shaped
balloons.
> >
> >Where in the heck can one find these things???
> >
> >Help!
> >Jonah Cohen
> >Outreach & Public Programs Manager
> >Science Center of Connecticut
>
>
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> More information about the Informal Science Education Network and the
> Association of Science-Technology Centers may be found at
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More information about the Informal Science Education Network and the
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To remove your e-mail address from the ISEN-ASTC-L list, send the
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