A steam turbine is a rotary mechanical device designed to convert the thermal energy contained within high-pressure steam into usable mechanical rotational energy. The process involves directing steam through a series of precisely shaped blades, which imparts momentum and rotational force to the rotating shafts. These turbines are critical components in various power generation systems, particularly those utilizing fossil fuels, nuclear reactions, or geothermal sources. By harnessing the expansion of steam, the turbine shaft can connect to a generator, which converts the mechanical rotation into electrical power, making it a foundational technology in large-scale energy production.