Part 3/9:
In a traditional turbine, blades are shaped to create lift as fluid flows over them. On the contrary, Tesla engineered his turbine to harness the viscous effect of fluid motion. This principle can be illustrated through the common observation of water flowing over a rounded stone, causing the stone to move due to the viscous forces at play. Capitalizing on this effect, Tesla devised a mechanism where the blades—or rather, discs—would spin as fluid moves across their surfaces.