Why Your Pee Looks Like A Chain

The first 100 people to go to https://blinkist.com/stevemould will get unlimited access for 1 week to try it out. You'll also get 25% off if you want full membership.

Have you noticed the shape of your urine stream when you pee? It does this twisty undulating thing. But why? And why do the same waves appear when you pour a liquid from a container?

Here's my video featuring Rayleigh instability:
https://youtu.be/DvtbQs7hWXw

Here's my video about the Lattice Boltzmann Method:
https://youtu.be/qwPg2Dmh-6k

The fake medical advice at the end comes courtesy of not-fake Doctor Rohin Francis. This is his excellent channel:
https://www.youtube.com/channel/UCgRBRE1DUP2w7HTH9j_L4OQ

Here are a couple of good videos on laminar flow:
https://youtu.be/y7Hyc3MRKno
https://youtu.be/5LI2nYhGhYM

Image and video credits:
The video of water floating in microgravity is by NASA
The Lattice Boltzmann animation is by Richard Sear

You can buy my books here:
https://stevemould.com/books

You can support me on Patreon here:
https://www.patreon.com/stevemould

just like these amazing people:

Glenn Watson
Peter Turner
Joël van der Loo
Matthew Cocke
Mark Brouwer
Deneb

Twitter: http://twitter.com/moulds
Instagram: https://www.instagram.com/stevemouldscience/
Facebook: https://www.facebook.com/stevemouldscience/
Buy nerdy maths things: http://mathsgear.co.uk

Видео Why Your Pee Looks Like A Chain канала Steve Mould