A turbine is a machine that converts energy from a fluid, like air or water, into mechanical energy. This process usually involves spinning blades that capture the energy from the moving fluid. Turbines are commonly used in power generation, such as in wind turbines that harness wind energy or hydroelectric turbines that use flowing water to produce electricity. Turbines play a crucial role in various industries, including aviation and manufacturing. For example, jet engines use turbines to propel aircraft by converting fuel into thrust. Overall, turbines are essential for generating energy and powering many technologies we rely on every day.