One of the great inventions relating to steam-power is the steam-turbine.
By a combination of a Parsons steam-turbine running at 12,000 revs.
The steam-turbine and the twin-screw propeller have made rapid ocean travel possible.
The steam-turbine is the most clearly visible of the revolutionary agencies in motors using the artificial sources of power.
After nearly a century of experimenting and after many failures there was at last developed an engine known as the steam-turbine.
The opposite extreme is found in alternators directly coupled to the Parsons steam-turbine, in which, with a speed of 3000 revs.
The propeller is caused to revolve by a steam-engine, steam-turbine, or gasolene-engine, as shown in Fig. 35 .