Beginning of Essay
The invention of the water turbine was so successful that eventually, the idea came about for extracting power from steam. Steam has one great advantage over water-it expands in volume with tremendous velocity. To be the most effective, a steam turbine must run ....

Middle of Essay
.... essential parts of all steam turbines consist of nozzles or jets through which the steam can flow and expand. Thus, the temperature drops, and kinetic energy is gained. In addition, there are blades, on which high pressure steam is exerted. Stationary blades shift the steam onto rotating blades, which provide power. Also, turbines are equipped with wheels or drums where the blades are mounted. A shaft for these wheels or drums is also a basic component, as well as an outer casing that confines the steam to the area of the turbine proper. In order to efficiently use this contraption, it is necessary to have a number of stages. In each ....