Deepwatch

Keyboard shortcuts

Space or k
Play or pause
j and l
Back or forward 10 seconds
Left and right arrows
Back or forward 5 seconds
f
Fullscreen
m
Mute or unmute
Shift and < or >
Slower or faster
?
Show or hide this list

This Material Sorts Itself

Steve Mould, 19 min, 1.3M views, Oct 31, 2026

Show description

Click this link: https://hensonshaving.com/stevemould and use code STEVEMOULD to recieve 100 free blades with the purchase of your AL13 razor. Turning a drum full of grains of different sizes sorts the grins by size and forms weird patterns. It's linked to granular segregation, the Brazil nut effect and landslides on the moon. Here's the paper by Chris and Nico: https://www.researchgate.net/publication/377489269_Particle-size_segregation_patterns_in_a_partially_filled_triangular_rotating_drum Here's the colloidal phase separation paper: https://pubs.acs.org/langd5/article-abstract/26/5/3174/306151/The-Role-of-Polymer-Polydispersity-in-Phase Get the Hooded Seal Plushie with actuating nose bubble: https://shop.stevemould.com You can buy my books here: https://stevemould.com/books You can support me on Patreon and get access to the exclusive Discord: https://www.patreon.com/stevemould Twitter: http://twitter.com/moulds Instagram: https://www.instagram.com/stevemouldscience/ Facebook: https://www.facebook.com/stevemouldscience/ TikTok: https://www.tiktok.com/stevemould Buy nerdy maths things: http://mathsgear.co.uk

When you're done