A Francis turbine is a type of water turbine that is used in hydropower systems to generate electricity from the flowing water. This turbine was invented by James B. Francis in the 19th century. There are also various synonyms for the term Francis Turbine such as radial flow turbine, inward flow turbine, mixed flow turbine, and diagonal flow turbine. These turbines are popular for their high efficiency, stability, and reliability. Francis turbines use water energy to turn blades that are arranged like the spokes of a wheel, which in turn generate electricity. These turbines are commonly used in hydroelectric power plants, industrial facilities, and irrigation systems.