I am not sure if I should start a new thread or revive an old thread this because it is the same topic. Location of tests: Scandinavia I simply want to know why and how a current carrying conductor parallel to earth surface moves perpendicularly to the current flow and parallel to earth surface. I discovered this by accident while in the lab hanging wire from a battery. I made many experiments, it is not local effects in the house. the conductor simply always moves perpendicular to the direction of current regardless of where I point the conductor. I am a little puzzled as to how and what the cause is in making the wire move. I thought that it is the magnetic field of earth inducing a Lorentz force on the wire. this would make perfect sense since IF the assumed magnetic direction of earth points perpendicular to earth surface there would be a Lorentz force on the wire But, the magnetic direction of earth -if I know correctly -runs parallel to the surface so any wire should instead want to move either up or sideways depending on the direction of the current relative to earth S.N.E.W.? Sofar however, the conductor always moves perpendicular to the conductor and parallel to earth surface regardless if I point the conductor South north or east west or any other combination. The conductor was also a straight lightweight rigid piece of aluminium foil hanging from a battery by two other strait light alu foils.. I put the conductor away from everything, on the table and also away from the table or anything else I tried this outside too.. I took a piece of ferromagnetic material very close besides the current carrying conductor, and still the conductor moved perpendicular to its current unaffected by the intentionally placed ferromagnetic material... could it be that the magnetic direction is indeed perpendicular to earth surface in the northern part of Earth?I am actually confused here and thought that the experts here may help me out? Maybe a better angle to solve this is the question of how the direction of the magnetic field looks like on the north part of earth but not directly on the pole of the earth. Picture shows the motion direction as well.