Hacker Newsnew | past | comments | ask | show | jobs | submitlogin

Fun fact: the 20p and 50p coins are Reuleaux heptagons[0]. This means that they have a constant diameter even though they're not circular, which means that they can be accurately sorted by vending machines.

[0] https://wikiless.org/wiki/Reuleaux_polygon?lang=en



Link that has functioning CSS: https://en.wikipedia.org/wiki/Reuleaux_polygon


There’s also a Reuleaux wheeled bike [1]

[1] https://youtu.be/ebRI4kFmR7U



That’s pretty awesome. I quite like this one too https://youtu.be/PX3A7GLtFqM


Damn that's cool.


And of course "How to drill a square hole" https://www.youtube.com/watch?v=L5AzbDJ7KYI


Looks like the OP is 403.




Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: