ElectroMagnetic (E.M.) Ring Launcher

ElectroMagnetic (E.M.) Ring Launcher, demonstrates the principles of electromagnetic forces created when current flows through a coil of wire (solenoid), and how a secondary conductor has an induced current and magnetic field that is repelled by the first.

[kreynolds]

I wonder if sea water can be pushed against. Sea water is much less conductive but there there must be some induced current and its magnetic field must push against the original changing magnetic field.