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Hey, Erich, check out recipe 83 in the Exploratorium Cookbook II for  
one version of the Bernoulli blower.  Dupage Children's outside  
Chicago has another version where kids make their own Bernoulli  
blowers with PVC pipe, ping pong balls, and a table with multiple  
ports to plug into for pressurized air.  It's much more open-ended  
than the original and gives kids a chance to play with a variety of  
configurations.

Chuck Howarth
Gyroscope, Inc.
283 Fourth Street, Suite 201
Oakland, CA  94607
[log in to unmask]
510-986-0111

http://www.gyroscopeinc.com

Check out our blog!
http://museums-now.blogspot.com/


On May 28, 2009, at 7:17 AM, Erich Rose wrote:
>
> For an "air play table" or a Bernoulli blower what would you  
> suggest as a minimum air flow? CFM? I have used different fans in  
> the past with different results. More often than not they were used  
> squirrel cage fans that we had laying around and had a wide variety  
> of outputs.  What I am looking for is some feedback from others  
> about what they found worked best.
>
>




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