Re: .Bernoulli and curve balls.

[palmer@sfu.ca (Leigh Palmer)]

> Leigh:  Your comments seem correct, but I'm still puzzled.  Pressure in the
> pipe has to come from molecules bouncing off the pipe.  If there is less
> pressure there must be fewer molecules hitting the pipe or else they are not
> hitting the pipe as hard.  If the fluid is incompressible the number of
> molecules hitting the pipe must be the same so they must not be hitting it
> as hard.  If the pressure is higher they must be hitting the pipe harder.
> Is there a flaw here?

I don't see that molecules ever enter the picture here. Bernoulli's
theorem works for a classical continuous incompressible fluid. Molecules
play no role in that picture. I think you are thinking about a gas.

Leigh