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Took one look at that thumbnail and knew it was a Steve Mould creation. He has a very distinctive style to his water models.
So, basically an Archimedes Screw.
Nope. The airlock effect inside the mechanism produces an additive effect with each coil that builds the pressure way beyond what a normal screw pump is capable of (he shows a friend who has one that pumps water to a garden 8 meters above just from the force of the river spinning it). That’s what makes it worth its own whole Steve Mould video.