Template:POTD protected/2008-04-29

The rotor of a modern steam turbine produced by Siemens AG, which converts steam (heat) energy into kinetic (mechanical) energy. The steam path is from the smallest blade, expanding through progressively larger blade elements. Steam turbines are used in power plants to extract mechanical work from pressurised steam and benefit from their high efficiency and high power-to-weight ratio compared to other technologies, leading to their widespread deployment from electricity generation to marine propulsion.

Photo credit: Christian Kuhna, Siemens AG