Electromagnetic Propulsor - Solenoid
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When current is flowing in conventional solenoid, it creates magnetic field, which depending on polarity, pulls in or pushes out the magnet. Due to action-reaction law, on magnet and solenoid act forces of the same magnitude, but in opposite direction. So, they compensate each other, when both – solenoid and magnet – are fixed on the same support.
But if winding of solenoid is made of steel wire (or any other ferromagnetic conductor), the field inside the wire is 1000 times greater than inside of copper wire. It means that force, acting on steel solenoid is 1000 times greater, than on copper solenoid. But force, acting on magnet remains the same. So, forces no more compensate each other. This uncompensated force has no reaction and may be used as propulsive force – internal propulsion.
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