11-04-2013, 05:06 PM
I have thought of something along these lines, although I imagined it as a kind of capacitor with numerous parallel flat plates, separated mechanically. Dr Forward's idea of a spiral is elegant, although it sounds as if it would take a lot of tweaking to make it work. Would the amount of energy that could be stored in this fashion exceed other methods that operate on a similiar scale and energy density? The fine tweaking (which Forward calls 'careful control') might be an energy drain that reduces the efficiency of the battery.