What is Steam Turbine?

A steam turbine is a device that extracts thermal energy from pressurized steam and uses it to do mechanical work on a rotating output shaft. Its modern manifestation was invented by Charles Parsons in 1884. Because the turbine generates rotary motion, it is particularly suited to be used to drive an electrical generator. Steam turbines are used in thermal power plants such as those using coal, fuel oil, nuclear fuels, and geothermal energy.