Re: [Phys-L] featured video: paper airplanes

[Sam Sampere <smsamper@syr.edu>]

Dang, after i thought i understood this, it's all wrong. Back to the drawing board. Life is a lifelong learning experience!
Sam

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On Nov 3, 2020, at 5:13 AM, John Denker via Phys-l <phys-l@mail.phys-l.org<mailto:phys-l@mail.phys-l.org>> wrote:

Beware of this video:
  https://youtu.be/3KqjRPV9_PY

Almost everything it says about the physics is wrong.

Disparaging Bernoulli is wrong.
Bernoulli was a smart guy. Bernoulli's theorem is still a theorem.
It is not restricted to internal aerodynamics.

Explaining lift in terms of Coanda is wrong.

I do not have time to go into the details right now.
I have a 20-hour job to do today, working the polls.

For now, you can read a reasonably careful explanation here:
  https://www.av8n.com/how/htm/airfoils.html
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