This opens the possibility of using fluid motions to distort a pre-existing magnetic field in such a way as to produce electric currents (as in the hydroelectric generator) which will themselves induce a secondary magnetic field (just as with electromagnets) which is then itself distorted by fluid motions to produce new electric currents, and so on.
(This; opens; the possibility of using fluid motions to distort a pre-existing magnetic field in such a way)
This
opens
the possibility of using fluid motions to distort a pre-existing magnetic field in such a way