"Le Chaud Lapin" wrote in message
oups.com...

The air on the "outside" of the umbrella does *NOT* instantaneously
fill the void that is created by yanking the umbrella.

All you need to change the known science of aerodynamics is a wind tunnel.
For example, some of your fellow aerospace scientists use this one:

http://www.ccastronomy.org/photo_NAS...14_640x480.jpg
http://www.windtunnels.arc.nasa.gov/...2FT/12ft2.html

It's amazing. They even have a supersonic wind tunnel so they can test
their aerodynamic ideas. Not only that, but they have a VR lab nearby that
lets them look at 3D renderings of the wind tunnel results.


-c