David Politzer, “The Physics of Banjos” (Open Agenda, 2021)
Ideas Roadshow Podcast
00:00
The Reynolds Number, the Quarticer Equation
For a couple of hundred years, people knew how water in a pipe moves smoothly. When it's bigger than two thousand two thousand, what? That's the reynolds number. And this is reflected by this quarticer equation. Well, if you, if you could solve it, i'd ther to do it. You would find that there. All he knew is that there were simple cases where this didn't happen at all. He could prove it. The theorists then apply a technique, which they used successfully in many cases. It's we don't understand, in terms of pencil and paper, turbulent flow, but we know things like when is something unstable. Or there's line
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