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Originally Posted by sheepdog 44
This is actually a real concept. Water under high current and voltage will vaporize and expand violently into steam. The expansion is where the motive energy comes from, not compression.
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Sure. That's what happens when a tree gets hit by lightning, for instance. But the problem with using it as a source of motive power is that it's inherently less efficient - basic thermodynamics - than using the same amount of electricity to turn an electric motor.