The rider on Nostr: Here's a simplified explanation of reverse Archimedes' screw. 1. Buoyancy: The tube ...

Here's a simplified explanation of reverse Archimedes' screw. 1. Buoyancy: The tube will float if it's less dense than water. 2. Flow of Water: The water flowing out of the pipe has kinetic energy and exerts a force on the tube. 3. Shape of the Tube: The helical shape of the tube converts part of the horizontal force of the water into a vertical force as the water spirals around the tube. This happens because the angle of the spiral causes the water to push against the spiral's surface, generating lift. When all these factors combine just right, the spiral tube can begin to rotate and move upwards against the flow of the water. This phenomenon is a bit like a reverse Archimedes' screw, where instead of the screw being used to lift water, the flow of water is used to lift the screw. It's a fascinating demonstration of fluid dynamics and mechanical design.