Alan Baker wrote:

No one understands "suction" to actually mean a pulling force.

Remember folks: no more talk of sucking soda through a straw!
Just suck it up!

... don't pretend that there is a force acting upward on the surface
of the liquid inside the straw...

...because you'll be wrong.


You still don't get it Alan. This level of attention to minutiae is
impressive in Junior High science classes, and paradoxically is quite
correct but trivial. Get over it.

Just so you can savor the general idea - let me phrase the general
concept so it won't trip your OC reaction:
In the general case, two thirds of the lift provided by a wing is due to
the depression over the upper surface - (actually towards the front...)
and a third due to the air flow over the lower surface.

THERE. Are you happy now?

Brian W