Quote:
Originally Posted by The Metal
Does anyone remember those flashlights that you shook up to recharge? They had an iron battery wrapped in a copper coil? Well how about giant versions of those? They're safe, very simple, and provide a nearly infinite amount energy.
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The flashlight you refer to works on electromagnetic induction, which is the tendency for EMF to be produced when a permanent magnet and a conductor are in close relative motion to each other (in this case, through a solenoid). This is the same principle used to power large-scale electrical generators.
With the energy released by the expenditure of fuel. Which leaves us right back where we started.
EDIT: Damn, I just realized I wrote magnetic field in place of EMF without even thinking about it.