A long time ago I was quite fascinated by the idea of electro-gravitics, the notion that one might be able to manipulate gravity or otherwise generate thrust using nothing but the careful modulation and configuration of electric fields.
While this was enjoyable folly at the time, on reflection the other night the thought occurred that even if this were possible, and reasonably efficient, how could it be powered, and more specifically, could I get into outer space using nothing but the humble AA battery?
