Jim Logajan wrote:
Beryl wrote:
Air can't be in tension.

If it had a stressful day it might become tense. Air can be under a lot of
pressure at times, and work can cause it to get hot. Put under too much
pressure, air can blow a gasket.

That's why it's best to let air blow off steam after a hard day at work and
maybe offer it a smoke with a gin and tonic to cool off:

http://www.bobblum.com/Images/Humor%.../subgenius.jpg



I think it's about time for a little remedial aerodynamics for the group.

http://www.messybeast.com/dragonqueen/liftdemon.htm



LIFT DEMONS AND THRUST PIXIES

Title of Paper: The Role of Lift Demons and Thrust Pixies in Heavier Than Air Flight

Publication Date: 2004

Abstract: The role of Lift Demons in aeronautics was first explained in 1994 by
Mary Shafer (NASA). Since then, Shafer's work has been explored and revised.
This paper summarises advances in Lift Demon technology over the last decade.

Keywords: Lift Demons, Thrust Pixies, lemon fondant

Authors: Sarah Hartwell, DEF Smith, Peter Rieden, Gavin Bull