If Perpetual Energy isn’t real, then how do Dams generate energy forever?
In: Engineering
Dams generate power by extracting it from falling water. Water on the high side of the dam moves down to the low side, picking up speed from gravity to turn a turbine to generate power. The water that was high is now low and the way it is “reset” is through the water cycle.
Water evaporates from the low area (rivers, lakes, oceans, etc.) and condenses to rain or snow back down at higher elevations. The evaporation is powered by the Sun adding heat to Earth, and the Sun is powered by fusion that consumes a finite fuel. It will last for a very long time but eventually the Sun will run out of fuel which means it is not perpetual energy.
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