Hidden in the detergent drawer of your washing machine is an extremely clever bit of engineering that you've probably never noticed or even realized needed to be there.
How does a washing machine get detergent, fabric softener, etc. from the tray to the drum? With a hand-made 2D version, Steve Mould explains the physics behind the Pythagorean siphon, also known as the greedy cup siphon. He also goes on to demonstrate how some toilets use a siphon to measure the correct amount of water per flush.
His channel is dedicated to any topic within science that he finds interesting: from siphons to how taste works to computing and physics.