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I would set up a chamber with a miniature kite inside.  You can could
attach the kitestring to the end of an arm that is spun by a motor.
When you remove the air no matter how fast you turn the arm the kite
will fall below the arm.  As soon as you let the air back in the kite
will fly inside the chamber above the arm.  The kite itself can be as
small as 1".  If you need more kite information let me know.

Mike

--
Mike Levad
Exhibit/Program Developer
The Franklin Institute Science Museum
222 N. 20th St. Philadelphia, PA 19103
Voice:215.448.1309
Fax:215.448.1188
E-mail: [log in to unmask]

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