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Tamara,

They have a very nice cratering exhibit at the Denver Museum of Nature 
and Science - closed up, auto reset, conveyor ball retrieval systems, 
high speed camera, the works. Far from simple. What's wrong with an open 
sandbox?

Joe Ruggiero

Tamara Schwarz wrote:

>ISEN-ASTC-L is a service of the Association of Science-Technology Centers
>Incorporated, a worldwide network of science museums and related institutions.
>*****************************************************************************
>
>I'm trying to come up with a good, simple approach for a cratering exhibit
>that doesn't involve an open sandbox. If you've seen any cratering exhibits
>that worked well, I'm looking for ideas (type of powdery materials used for
>the landscape, mechanism for launching & retrieving the projectiles, etc).
>Or if you have experience with an approach that didn't work so well, I'll
>take cautionary advice as well! 
>
>Thanks,
>Tamara
>
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>Tamara Schwarz, Exhibits Manager
>Chabot Space & Science Center
>10000 Skyline Blvd.
>Oakland, CA 94619
>phone: (510) 336-7349
>fax: (510) 336-7491
>[log in to unmask]
>http://www.chabotspace.org 
>
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