OK Pigdog.
You have rumbled me as a "stirrer".
I just like to see what happens with spoofs.
I watch the "parrots" bit with interest and will submit the answer when there have been more replies.
In the meantime, here's another:
The equation of continuity and Bernoullis' Theorem tell us that in incompressible fluid flow an increase in velocity results in a decrease in pressure and vice versa.
Consider a windsock where the entrance is of larger area than the exit.
This represents a convergent duct. In a convergent duct (such as the first part of a carburettor venturi) there is an increase in velocity and a drop in pressure.
Question:
Why therefore does the windsock not collapse.....?
JP
