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Hi all--

Somewhere, long ago, one of our wonderful volunteers saw a neat exhibit 
where a small diameter pipe is connected near the bottom of a large 
diameter pipe.  A bowling ball drops down the large pipe, compressing 
the air inside it;  this causes the tennis ball resting on the smaller 
diameter tube to shoot way up in the air.  He'd like to build one for 
our outdoor Science Park area.

Our early experiments have not been very successful.  Any hints or 
suggestions as to someone who has done this successfully would be most 
appreciated!

Kathy Krafft
Exhibit Projects Director
Sciencenter
Ithaca, NY
607-272-0600 x25

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