Spin the magnets fast with the drill and the bulb will light brightly. Don't go too fast or you'll burn out the bulb, or fling magnets all over the room. You can try this with an electric drill as well, although electric drills don't spin as fast. The output voltage is about 2 volts max, so there is no shock hazard at all. After all, the atoms of the metal are made half of positive protons and half of negative electrons.
All wires are full of electric fluid.
It is not invisible, it actually gives metals their silvery shine. The electron gas is like a silvery fluid. This circular voltage trys to force the movable charges in the wire to rotate around the circle. In other words, moving magnets create electric currents in closed circles of wire. A moving magnet causes a pumping action.