Why Do All Boats Make This Shape?

From “Minute Physics”. ( YouTube / Nebula )

Go to https://curiositystream.com/minutephysics to get access to CuriosityStream AND Nebula (where you can watch the extended version of this video), plus you’ll get a 26% discount on an annual subscription.

This video is about the "Kelvin wake" shape of water wakes behind boats – we talk about mach angle, dispersion, superposition of many waves, and how these all lead to the pattern of a wake. We don’t get into Froude number though…

Boat Wake Wikipedia Page: https://en.wikipedia.org/wiki/Wake

Interactive Boat Wake Simulation: https://observablehq.com/@rreusser/dispersion-in-water-surface-waves

Feynman Lectures on Water Waves: https://www.feynmanlectures.caltech.edu/I_51.html#Ch51-S4

Building up a Boat Wake from V-Shaped Wakes: https://editor.p5js.org/aatish/full/bDiykicsC

Wave Dispersion: https://en.wikipedia.org/wiki/Dispersion_relation

Mach angle shock waves:

Ship Wakes – Kelvin or Mach Angle? Rabaud and Moisy Paper: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.110.214503

Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics
Link to Patreon Supporters: http://www.minutephysics.com/supporters/

MinutePhysics is on twitter – @minutephysics
And facebook – http://facebook.com/minutephysics
And Google+ (does anyone use this any more?) – http://bit.ly/qzEwc6

Minute Physics provides an energetic and entertaining view of old and new problems in physics — all in a minute!

Created by Henry Reich