Freaky Dot Patterns

Alex Bellos discusses how the Incans used knots in string (Quipu) to record numbers.Check out Brilliant (get 20% off their premium service): https://brillian...

Tadashi Tokieda is back, this time with Moiré Patterns.

More with Tadashi: http://bit.ly/tadashi_vids

Elliptical pool table: https://youtu.be/4KHCuXN2F3I