[PSUBS-MAILIST] (not sub related) Air velocity formula

[Marie-Andrée et Pierre <poulin.carrier@videotron.ca>]

Hi guys,

I'm working on a non-sub project and I'm looking for a formula that would 
tell me the change of air velocity if I go from a pipe of 2" dia to a 1/4" 
dia. I also need to know the drop of pressure.

So if you have a link to good formula / equations site for air/presuure and 
such I would greatly appreciate it!

Thank guys.

Pierre "quicker then air" Poulin 




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