Re: .Bernoulli and curve balls.

[jmclean@chem.ucsd.edu]

John Mallinckrodt says:

> It seems to me that I heard somewhere that velocities are frame-dependent; 
> isn't it just a little peculiar, then, to say "pressure is high where the 
> velocity is low" and vice versa?  I guess this is just one more reason 
> why I generally prefer momentum transfer as an explanation for lift and 
> drag phenomena. 

But relative velocities are frame independent.  Not that I know which
velocities to compare;  given stationary water in a pipe, I doubt that you
can reduce the pressure by moving the pipe.  Or can you? 8-S

-- 
--James McLean
jmclean@chem.ucsd.edu
post doc
UCSD