re electrical spacecraft via magnetic field of earth in article may aurora alaska edu nsmca aurora alaska edu writes okay the earth has a magnetic field unless someone missed something okay if you put a object in the earth magnetic field it produces electricty no if you put a conductor in a changing magnetic field it produces a voltage the two ways you can do that with a permanent magnet is to move the magnet or move the conductor the slow shifting of the earth s magnetic field isn t really significant especially when you consider how weak the earth s magnetic field is to begin with now the question can you use electricity to power a space low earth orbit vehicle and i fyou can can you use the magnetic field of the earth to power it well it would require generating an incredibly large magnetic field to repel the earth s magnetic field as a magnet can repel another magnet of course this force only works in one direction and the magnetic field generated has to be unimaginably powerful magnetic repulsion drops off as r and the earth s magnetic field on the surface is already very weak it would require some sort of unknown superconductor and special nonmagnetic construction and seriously hardenned electronics optical computers perhaps and the physiological danger would be significant due to the iron content in our blood among other things in other words forget it can the idea of a dragless satellite be used in part to create the electrical field after all the dragless satellite is i might be wrong a suspended between to pilons the the pilons compensate for drag i think i know what i want to say just not sure how to say it a dragless satellite sounds interestingly enough liek a generator i missed out on the dragless satellite thread but it sounds totally bogus from this little bit isaac kuo isaackuo math berkeley edu o twinkle twinkle little sig keep it less than lines big
