Re:Sussman Explains the End of SICP
by selimthegrim on Sunday February 05, 2023 @12:27PM
(#34666705)
Planes flying along with siphons are bad example to ask theoretical physicists - most of them wouldn't be able to give you the right answers. Feynman was closer than most because he did think about things like what would happen if a rotating sprinkler sucked in water, etc.
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All you need is very rudimentary fluid mechanics, some vague idea of attack angle, and the conservation of momentum with a compressed column of air under the plane. I think most theoretical physicists could come up with that.
The siphon one is funny because many people will start with air pressure, which is wrong.
Re:Sussman Explains the End of SICP
by selimthegrim on Sunday February 05, 2023 @11:20PM
(#34673303)
Yes, first and second year undergrads when I taught intro labs and diff eq.
My understanding is there is a rather tortuous explanation involving viscosity (for lift and wing shape)