What advantage has the steam turbine over the steam engine ?

In the steam engine the backward and forward motion of the piston-rod is changed into one of turning by means
of the connecting rod. A great deal of friction has to be overcome at the joints which connect the parts which
effect this change. Thus a great loss of energy is in­curred.

In the steam turbine, the steam causes the parts upon which it acts to rotate. There is no to-and-
fro motion to be converted, so that the whole force is used as driving power.

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