>The current flows in a C-shape through the device. This C-shape produces outward force in all directions, like water flowing through a bent rubber hose. One r

>The current flows in a C-shape through the device. This C-shape produces outward force in all directions, like water flowing through a bent rubber hose. One really shouldn't expect any measurable force from this effect. I don't claim that this effect doesn't exist, but electron mass is really small and electrons usually travel really slowly in metals (mean velocity, not to be confused with Fermi-velocity, which is usually quite large), even at relatively large currents. I can make a simple calculation for the author's construction if anyone's interested. One can build guns based on induction and Lorentz-force but I think using the electrons' inertia is completely unfeasible.