A
Civilization advance.
The steam engine is a
device that uses
steam to generate
power.
Water, heated by burning
fuel (usually
coal or
wood), turns to steam. This steam builds up
pressure inside a
container with a small
exit hole. Once the steam pressure is high enough, it forces its way out through the hole, pushing a
turbine in the process. The spinning turbine produces power as motion or
electricity (or both).
Prerequisites: Invention and
Physics.
Allows for: Railroad
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