On 16 Okt, 20:41, Jim Logajan wrote:
Thomas wrote:
You may want to check out my web pages
http://www.physicsmyths.org.uk/bernoulli.htmand
http://www.physicsmyths.org.uk/drag.htm for a closer examination of
the physics behind the aerodynamicliftand drag.

You might want to actually _include_Bernoulli'stheorem somewhere in your
pages. You talk aboutBernoulli'sequation,Bernoulli'sprinciple, andBernoulli'slaw. And yet none of them are actually presented. Are you
saying they all the same or all different? Why not use the terminology used
by the professionals and stick with "Bernoulli'stheorem"? How about
including references to relevant texts on your pages? It's not like serious
texts and lab experiments haven't been done on the subject for a zillion
years. It helps to show you know what you're talking about by showing
you've first read the professional literature on the subject and done your
own relevant research.

You might also want to redraw your figures so they include vertical labeled
arrows. Then present the assumptions and math needed to show your work and
why you think the vertical magnitudes sum to zero. Just saying they do, or
they only yield a torque, isn't good enough. It is more useful to _show_ -
not pontificate and hand-wave.

P.S. Chapter section 40-3 in volume 2 of Feynman's Lectures on Physics is
as good a place as any to start.


Nobelprizewinner Feynman made a good statement about the fluid
Bernoulli equation was valid for, "ideal fluid".

Feynman called the perfect fluid for "dry water" and it did not
exsist i a real world, only the mathematical world.