There's a greedy cup siphon in your washing machine fabric softener try. Also called a Pythagorean cup. It's also used in urinals and novelty drinking receptacles. It's an example of a fluid dynamic ...

Pythagorean cup, a cup that will spill all its contents if you don’t fill it just right, thanks to a hidden siphon mechanism. Nigel Latta has passed away, aged 58 Putin’s escalation is far worse than ...