Hacker News new | ask | show | jobs
by Serow225 1815 days ago
Bernoulli's principle, the actual thing, has very strict criteria* to be applicable. People usually neglect this entirely in casually throwing the term around.

- points 1 and 2 lie on a streamline,

- the fluid has constant density (note effects of height difference > gravitational potential energy between point 1 and 2),

- the flow is steady, and

- there is no friction.