Leonardo da Vinci designed and studied water wheels to produce mechanical force from flowing water.
A water wheel transfers the energy of moving or falling water into rotation. That rotation can drive machinery such as pumps, mills, hammers, or other workshop equipment. Leonardo examined wheel shapes, channels, and mechanisms for using water more effectively in industrial and agricultural settings.
Water wheels were ancient technologies, not Leonardo’s original invention. His importance lies in the detailed observation, analysis, and improvement of machines. His notebooks contain many studies of water motion, including pumps, canals, locks, and devices that lift or redirect water.
A water wheel differs from a modern hydroelectric turbine. Both extract energy from water, but a turbine is a later, more compact machine designed to drive generators or other high-speed equipment.